fix(offline): install mistral-regex patch for non-MLX backends

The previous commit left the patch wired only through ``mlx_backend.py``'s
existing import of ``hf_offline_patch``. On Windows/Linux/CUDA users who
never load the MLX backend (everyone who hit #526), the patch module was
never imported, so ``patch_transformers_mistral_regex`` never ran and the
crash persisted.

Hoist the import into ``backends/__init__.py``. Every backend imports from
this package, so the module-level patch install runs before any
``from_pretrained`` call regardless of which engine the user picks.

Caught by CodeRabbit and Cursor Bugbot on #530.

.agents/skills/add-tts-engine/SKILL.md

@@ -0,0 +1,120 @@
+---
+name: add-tts-engine
+description: Use this skill to add a new TTS engine to Voicebox. It walks through dependency research, backend implementation, frontend wiring, PyInstaller bundling, and frozen-build testing. Always start with Phase 0 (dependency audit) before writing any code.
+---
+
+# Add TTS Engine
+
+## Goal
+
+Integrate a new text-to-speech engine into Voicebox end-to-end: dependency research, backend protocol implementation, frontend UI wiring, PyInstaller bundling, and frozen-build verification. The user should only need to test the final build locally.
+
+## Reference Doc
+
+The full phased guide lives at `docs/content/docs/developer/tts-engines.mdx`. **Read this file in its entirety before starting.** It contains:
+
+- Phase 0: Dependency research (mandatory before writing code)
+- Phase 1: Backend implementation (`TTSBackend` protocol)
+- Phase 2: Route and service integration (usually zero changes)
+- Phase 3: Frontend integration (5 files)
+- Phase 4: Dependencies (`requirements.txt`, justfile, CI, Docker)
+- Phase 5: PyInstaller bundling (`build_binary.py` + `server.py`)
+- Phase 6: Common upstream workarounds
+- Implementation checklist (gate between phases)
+
+## Workflow
+
+### 1. Read the guide
+
+```bash
+# Read the full TTS engines doc
+cat docs/content/docs/developer/tts-engines.mdx
+```
+
+Internalize all phases, especially Phase 0 and Phase 5. The v0.2.3 release was three patch releases because Phase 0 was skipped.
+
+### 2. Dependency research (Phase 0)
+
+Clone the model library into a temporary directory and audit it. Do NOT skip this.
+
+```bash
+mkdir /tmp/engine-research && cd /tmp/engine-research
+git clone <model-library-url>
+```
+
+Run the grep searches from Phase 0.2 in the guide against the cloned source and its transitive dependencies. Produce a written dependency audit covering:
+
+1. PyPI vs non-PyPI packages
+2. PyInstaller directives needed (`--collect-all`, `--copy-metadata`, `--hidden-import`)
+3. Runtime data files that must be bundled
+4. Native library paths that need env var overrides in frozen builds
+5. Monkey-patches needed (`torch.load`, float64, MPS, HF token)
+6. Sample rate
+7. Model download method (`from_pretrained` vs `snapshot_download` + `from_local`)
+
+Test model loading and generation on CPU in the throwaway venv before proceeding.
+
+### 3. Implement (Phases 1–4)
+
+Follow the guide's phases in order. Key files to modify:
+
+**Backend (Phase 1):**
+- Create `backend/backends/<engine>_backend.py`
+- Register in `backend/backends/__init__.py` (ModelConfig + TTS_ENGINES + factory)
+- Update regex in `backend/models.py`
+
+**Frontend (Phase 3):**
+- `app/src/lib/api/types.ts` — engine union type
+- `app/src/lib/constants/languages.ts` — ENGINE_LANGUAGES
+- `app/src/components/Generation/EngineModelSelector.tsx` — ENGINE_OPTIONS, ENGINE_DESCRIPTIONS
+- `app/src/lib/hooks/useGenerationForm.ts` — Zod schema, model-name mapping
+- `app/src/components/ServerSettings/ModelManagement.tsx` — MODEL_DESCRIPTIONS
+
+**Dependencies (Phase 4):**
+- `backend/requirements.txt`
+- `justfile` (setup-python, setup-python-release targets)
+- `.github/workflows/release.yml`
+- `Dockerfile` (if applicable)
+
+### 4. PyInstaller bundling (Phase 5)
+
+Register the engine in `backend/build_binary.py`:
+- `--hidden-import` for the backend module and model package
+- `--collect-all` for packages using `inspect.getsource`, shipping data files, or native libraries
+- `--copy-metadata` for packages using `importlib.metadata`
+
+If the engine has native data paths, add `os.environ.setdefault()` in `backend/server.py` inside the `if getattr(sys, 'frozen', False):` block.
+
+### 5. Verify in dev mode
+
+```bash
+just dev
+```
+
+Test the full chain: model download → load → generate → voice cloning.
+
+### 6. Use the checklist
+
+Walk through the Implementation Checklist at the bottom of `tts-engines.mdx`. Every item must be checked before handing the build to the user.
+
+## Key Lessons (from v0.2.3)
+
+These are the most common failure modes. Phase 0 research catches all of them:
+
+| Pattern | Symptom in Frozen Build | Fix |
+|---------|------------------------|-----|
+| `@typechecked` / `inspect.getsource()` | "could not get source code" | `--collect-all <package>` |
+| Package ships pretrained model files | `FileNotFoundError` for `.pth.tar`, `.yaml` | `--collect-all <package>` |
+| C library with hardcoded system paths | `FileNotFoundError` for `/usr/share/...` | `--collect-all` + env var in `server.py` |
+| `importlib.metadata.version()` | "No package metadata found" | `--copy-metadata <package>` |
+| `torch.load` without `map_location` | CUDA device not available on CPU build | Monkey-patch `torch.load` |
+| `torch.from_numpy` on float64 data | dtype mismatch RuntimeError | Cast to `.float()` |
+| `token=True` in HF download calls | Auth failure without stored HF token | Use `snapshot_download(token=None)` + `from_local()` |
+
+## Notes
+
+- The route and service layers have zero per-engine dispatch points. `main.py` requires zero changes.
+- The model config registry in `backends/__init__.py` handles all dispatch automatically.
+- Use `get_torch_device()` and `model_load_progress()` from `backends/base.py` — don't reimplement device detection or progress tracking.
+- Always test with a **clean HuggingFace cache** (no pre-downloaded models from dev).
+- Do NOT push or create a release. Hand the build to the user for local testing.

.agents/skills/draft-release-notes/SKILL.md

@@ -0,0 +1,94 @@
+---
+name: draft-release-notes
+description: Use this skill to draft or update the [Unreleased] section of CHANGELOG.md from the actual changes since the last tag. Run this at any point during development to keep a working copy of the release narrative. Does NOT bump versions or create tags.
+---
+
+# Draft Release Notes
+
+## Goal
+
+Update the `[Unreleased]` section at the top of `CHANGELOG.md` with a narrative release story based on the real changes since the last tag. This is a **non-destructive working copy** — run it as many times as you want during development.
+
+## Workflow
+
+1. **Identify the last release tag and gather changes.**
+
+   ```bash
+   LAST_TAG=$(git tag --list "v*" --sort=-v:refname | head -n 1)
+   echo "Last tag: $LAST_TAG"
+   ```
+
+   Then collect raw material from three sources:
+
+   a. **Commit log since last tag:**
+   ```bash
+   git log --oneline "$LAST_TAG"..HEAD
+   ```
+
+   b. **GitHub-generated release notes preview** (PR titles, new contributors):
+   ```bash
+   gh api repos/:owner/:repo/releases/generate-notes \
+     -f tag_name="vNEXT" \
+     -f target_commitish="$(git rev-parse HEAD)" \
+     -f previous_tag_name="$LAST_TAG" \
+     --jq '.body'
+   ```
+
+   c. **Diff stat for theme analysis:**
+   ```bash
+   git diff --stat "$LAST_TAG"..HEAD
+   ```
+
+2. **Draft the release narrative.**
+
+   Write markdown for the `[Unreleased]` section following the format below. Do not include the `## [Unreleased]` heading itself — just the body content.
+
+3. **Update CHANGELOG.md.**
+
+   Replace everything between `## [Unreleased]` and the next `## [` heading with the new draft. Preserve the HTML comment header and all existing release sections below.
+
+   The `[Unreleased]` section must always exist and always be the first section after the header comments.
+
+4. **Do NOT commit, tag, or bump versions.** Just leave the file modified in the working tree.
+
+## Release Story Format
+
+Structure the `[Unreleased]` section like this:
+
+```markdown
+## [Unreleased]
+
+<One strong opening paragraph: what this release is about and why it matters.
+Tie it to concrete shipped changes. No vague hype.>
+
+<One paragraph on major technical shifts, if applicable.>
+
+### <Feature/Theme Group>
+- Bullet points with specifics
+- Reference PRs where available: ([#123](https://github.com/jamiepine/voicebox/pull/123))
+
+### <Another Group>
+- ...
+
+### Bug Fixes
+- ...
+```
+
+### Style Guidelines
+
+- **Factual and specific.** Every claim should trace to a real commit or PR.
+- **Narrative over list.** Lead with paragraphs that tell the story, then support with bullets.
+- **Group by theme, not by commit.** Cluster related changes under descriptive headings.
+- **Reference PRs** where they exist, but don't fabricate them.
+- **Skip trivial chores** (typo fixes, CI tweaks) unless they're the bulk of the release.
+- **Match the voice of existing releases** — look at the v0.2.1 and v0.2.3 entries in CHANGELOG.md for tone reference.
+
+## When There Are No Changes
+
+If `git log "$LAST_TAG"..HEAD` is empty, leave the `[Unreleased]` section empty (just the heading) and tell the user there's nothing to draft.
+
+## Notes
+
+- This skill only touches the `[Unreleased]` section. It never modifies stamped release sections.
+- The agent can be asked to run this skill at any point — mid-feature, before a PR, or right before cutting a release.
+- The `release-bump` skill depends on this draft being up to date before it finalizes.

.agents/skills/release-bump/SKILL.md

@@ -0,0 +1,124 @@
+---
+name: release-bump
+description: Use this skill to finalize a release. It stamps the [Unreleased] changelog section with a version and date, runs bumpversion to update all version files, and creates the release commit and tag. Only run this when you're ready to ship.
+---
+
+# Release Bump
+
+## Goal
+
+Finalize the changelog draft, bump the version across all tracked files, and create a tagged release commit. After this skill runs, the repo has a clean release commit and tag ready to push.
+
+## Prerequisites
+
+- `gh` CLI installed and authenticated (`gh auth status`).
+- `bumpversion` installed (`pip install bumpversion` or available in the project venv).
+- The `[Unreleased]` section of `CHANGELOG.md` should already contain the release narrative. If it's empty or stale, run the `draft-release-notes` skill first.
+
+## Workflow
+
+1. **Verify the working tree is clean** (except `CHANGELOG.md` which may have the draft).
+
+   ```bash
+   git status --porcelain
+   ```
+
+   Only `CHANGELOG.md` (and optionally `.agents/` files) should be modified. If there are other uncommitted changes, stop and ask the user to commit or stash them first.
+
+2. **Determine the bump level.**
+
+   Ask the user if not specified: `patch`, `minor`, or `major`. Check the current version:
+
+   ```bash
+   grep '^current_version' .bumpversion.cfg
+   ```
+
+3. **Stamp the changelog.**
+
+   Read the current `[Unreleased]` content from `CHANGELOG.md`. Compute the new version (based on bump level and current version). Then:
+
+   a. Replace the `## [Unreleased]` section body with an empty placeholder.
+   b. Insert a new stamped section immediately after `## [Unreleased]`:
+
+   ```markdown
+   ## [Unreleased]
+
+   ## [X.Y.Z] - YYYY-MM-DD
+
+   <the content that was in [Unreleased]>
+   ```
+
+   c. Update the reference links at the bottom of the file:
+   - Change the `[Unreleased]` link to compare against the new tag
+   - Add a new link for the new version
+
+   ```markdown
+   [Unreleased]: https://github.com/jamiepine/voicebox/compare/vX.Y.Z...HEAD
+   [X.Y.Z]: https://github.com/jamiepine/voicebox/compare/vPREVIOUS...vX.Y.Z
+   ```
+
+4. **Stage the changelog.**
+
+   ```bash
+   git add CHANGELOG.md
+   ```
+
+5. **Run bumpversion.**
+
+   ```bash
+   bumpversion --allow-dirty <patch|minor|major>
+   ```
+
+   The `--allow-dirty` flag is needed because `CHANGELOG.md` is already staged. bumpversion will:
+   - Update version strings in all tracked files (see `.bumpversion.cfg`)
+   - Create a commit with message `Bump version: X.Y.Z -> A.B.C`
+   - Create a tag `vA.B.C`
+
+   The staged `CHANGELOG.md` will be included in this commit automatically.
+
+6. **Verify results.**
+
+   ```bash
+   git show --name-only --stat HEAD
+   git tag --list "v*" --sort=-v:refname | head -n 5
+   ```
+
+   Confirm the commit contains:
+   - `CHANGELOG.md`
+   - `.bumpversion.cfg`
+   - `tauri/src-tauri/tauri.conf.json`
+   - `tauri/src-tauri/Cargo.toml`
+   - `package.json`
+   - `app/package.json`
+   - `tauri/package.json`
+   - `landing/package.json`
+   - `web/package.json`
+   - `backend/__init__.py`
+
+   Confirm the new tag exists.
+
+7. **Do NOT push** unless the user explicitly asks. Report the tag name and suggest:
+
+   ```
+   Ready to push. When you're ready:
+     git push origin main --follow-tags
+   ```
+
+## Version Calculation Reference
+
+Given current version `X.Y.Z`:
+- `patch` -> `X.Y.(Z+1)`
+- `minor` -> `X.(Y+1).0`
+- `major` -> `(X+1).0.0`
+
+## Error Recovery
+
+- If bumpversion fails, the tag won't exist. Fix the issue and re-run — bumpversion is idempotent as long as the tag doesn't already exist.
+- If you need to undo a release commit (before pushing): `git tag -d vX.Y.Z && git reset --soft HEAD~1`
+- Never amend a release commit that has been pushed.
+
+## Notes
+
+- When the tag is pushed, the release CI (`.github/workflows/release.yml`) automatically extracts the matching version section from `CHANGELOG.md` and uses it as the GitHub Release body. No manual copy-paste needed.
+- The release commit message is controlled by `.bumpversion.cfg` (`Bump version: X.Y.Z -> A.B.C`). Do not override it.
+- If you need to manually update the GitHub Release body after the fact: `gh release edit vX.Y.Z --notes-file <(sed -n '/## \[X.Y.Z\]/,/## \[/p' CHANGELOG.md | head -n -1)`

.agents/skills/triage-prs/SKILL.md

@@ -0,0 +1,299 @@
+---
+name: triage-prs
+description: Use this skill to triage the open PR queue before a release. Classifies every open PR into must-merge, candidate, superseded, or deferred; writes a working triage doc; and runs the merge loop end-to-end. Designed for the pre-release "PR speedrun" pass where a solo maintainer wants to clear the inbound backlog in a single session.
+---
+
+# Triage PRs
+
+## Goal
+
+Turn a backlog of open PRs into a shipped set of merges in a single focused session. Produce a tracked, resumable plan (`<VERSION>_PR_TRIAGE.md`), then work it — rebasing where needed, merging in isolation-safe batches, applying post-merge follow-ups, and closing superseded or partially-applicable PRs with credit to their authors.
+
+This skill pairs with `draft-release-notes` and `release-bump`: triage first, then draft notes against the new main, then cut the release.
+
+## When to use
+
+- Before a minor or major release when 10+ open PRs have accumulated
+- When you want to unblock merging without losing the narrative of what's landing
+- When you know you can't personally review every PR deeply, but need to land the critical subset fast
+
+## Prerequisites
+
+- `gh` CLI authenticated against the repo
+- A dedicated worktree for PR review (avoid contaminating `main` with checkouts of contributor branches)
+- Clarity on the target version — the triage doc is named after it (e.g. `0.4.0_PR_TRIAGE.md`)
+
+## Workflow
+
+### 1. Set up an isolated PR-review worktree
+
+```bash
+git worktree list  # check for stale ones first
+git worktree prune
+git worktree add ../voicebox-pr-review -b pr-review-<VERSION> main
+```
+
+Keep the main worktree for release-prep work (changelog drafts, direct-to-main follow-ups). Keep the review worktree for `gh pr checkout` — each checkout moves HEAD to a contributor branch, which you don't want to do in the main worktree.
+
+### 2. Gather metadata for every open PR
+
+```bash
+gh pr list --state open --limit 50 --json \
+  number,title,author,isDraft,mergeable,mergeStateStatus,files,additions,deletions,reviewDecision,statusCheckRollup,maintainerCanModify \
+  --jq '.[] | {num: .number, title, author: .author.login, mergeable, state: .mergeStateStatus, canModify: .maintainerCanModify, changes: "+\(.additions)/-\(.deletions)", files: [.files[].path]}'
+```
+
+You want, for each PR:
+- Size (`+additions/-deletions`)
+- Mergeable state (`CLEAN`, `UNSTABLE`, `DIRTY` = conflicts, `UNKNOWN` = GitHub still computing)
+- Whether maintainer edits are allowed on the branch (needed later if you rebase for the author)
+- File paths touched (helps spot overlaps between PRs)
+
+`UNKNOWN` is common right after a push to main — just try the merge and see.
+
+### 3. Classify into tiers
+
+Sort each PR into exactly one bucket:
+
+**Tier 1 — Merge:** small, mergeable, fixes a real bug, clean CI, low review cost. One-liners, dependency relaxations, targeted safety hardening. These are the easy wins.
+
+**Tier 2 — Candidate, review:** medium size (50-200 lines), touches more surface area, looks sound but needs a closer read. New user-facing features that fit the product direction.
+
+**Supersede:** the fix or feature is already covered by something merged. Close with a comment pointing to the superseding PR. Check carefully — "similar title" isn't proof; compare the actual diffs.
+
+**Defer to next release:** big features, dirty conflicts, draft PRs, anything touching the release pipeline in ways that would introduce risk. Don't merge these in a speedrun — they need dedicated focus.
+
+### 4. Write the triage doc
+
+Create `<VERSION>_PR_TRIAGE.md` in the PR-review worktree root. Structure:
+
+```markdown
+# <Repo> <VERSION> — PR Triage
+
+Working doc for tracking which open PRs land in <VERSION>. Delete after release cut.
+
+Last updated: <DATE>
+
+## Progress
+
+**Tier 1: 0 / N merged**
+**Tier 2: 0 / M handled**
+**Supersede triage: pending**
+
+---
+
+## Merge for <VERSION> — critical bug fixes
+
+| PR | Status | Size | What it fixes | Why must-have |
+|---|---|---|---|---|
+| [#123](url) | [ ] | +5/-0 | ... | ... |
+
+## Strong candidate — needs a quick review
+
+| PR | Status | Size | Summary |
+|---|---|---|---|
+
+## Close as superseded
+
+| PR | Status | Reason |
+|---|---|---|
+
+## Defer to <NEXT_VERSION>
+
+- [#xxx](url) ... — reason
+
+---
+
+## Order of attack
+
+1. Close superseded PRs (one-liner comments)
+2. Merge tier-1 in dependency-free batches — check file paths don't overlap
+3. Review tier-2 individually
+4. Rerun `draft-release-notes` to pick up everything
+5. Run `release-bump`
+```
+
+The **Progress** header is the most important part — it's your scoreboard and lets you resume cleanly if the session gets interrupted.
+
+### 5. Work the loop — per PR
+
+For each PR in the tier-1 / tier-2 list:
+
+**a. Checkout in the review worktree:**
+```bash
+cd ../voicebox-pr-review
+git checkout pr-review-<VERSION>  # reset to neutral base
+gh pr checkout <N>
+```
+
+**b. Read the *actual* commit, not `main..HEAD`:**
+
+```bash
+git show HEAD                    # the PR's actual changes
+git show --stat HEAD             # files touched + line counts
+```
+
+**Do NOT review via `git diff main..HEAD`** if the PR branch is older than main. That diff includes *every commit that landed on main after the PR was forked* as `-` (deletion) lines. A 3-line PR can look like a 700-line revert. This is the single easiest way to misjudge a PR.
+
+**c. Evaluate concerns:** correctness, scope, interaction with already-merged work, version compatibility (e.g. can't use an API that requires a dependency version we don't yet pin).
+
+**d. Rebase if the branch is behind main:**
+```bash
+git fetch origin main
+git rebase origin/main
+```
+
+This is **essential** before squash-merging. GitHub's squash computes `diff(PR-head, merge-base)` — on a stale branch, that diff includes reverting every in-between commit. Rebasing moves the merge-base forward so the squash is clean.
+
+**e. If maintainer edits are allowed, push the rebase back to the contributor's fork:**
+```bash
+git remote add <author> https://github.com/<author>/<repo>.git
+git fetch <author> <branch>              # get their ref first
+git push <author> HEAD:<branch> --force-with-lease
+```
+
+This keeps GitHub's PR UI in sync with the rebased state and makes the merge clean from the GitHub side.
+
+**f. Merge:**
+```bash
+gh pr merge <N> --squash
+```
+
+**g. Update the triage doc** — flip the checkbox to `✅ merged <sha>` (use the short SHA from `gh pr view <N> --json mergeCommit --jq '.mergeCommit.oid[0:7]'`). Update the Progress header.
+
+### 6. Batch tiny fixes
+
+PRs with ≤5 line changes, clean CI, non-overlapping file paths, and obviously-correct intent (e.g. one-line dependency relax, env var add, import path fix) can be merged in a single loop without the review-per-PR ceremony:
+
+```bash
+for pr in 425 384 416 429; do
+  echo "=== Merging PR $pr ==="
+  gh pr merge $pr --squash
+done
+```
+
+Verify afterward that each landed cleanly:
+```bash
+for pr in 425 384 416 429; do
+  gh pr view $pr --json state,mergeCommit --jq "{pr: $pr, state, sha: .mergeCommit.oid[0:7]}"
+done
+```
+
+### 7. Post-merge follow-ups
+
+Sometimes a PR is worth merging despite a known minor issue (e.g. incomplete dtype map, stale sentinel cleanup). Don't block the merge; apply the follow-up as a normal branch + PR right after:
+
+```bash
+cd <main-worktree>
+git pull --ff-only origin main
+git checkout -b fix/<short-name>
+# edit...
+git commit -m "fix(<area>): <one-liner>"
+git push -u origin fix/<short-name>
+gh pr create --title "..." --body "Follow-up to #<N>. ..."
+```
+
+Record both SHAs in the triage doc (`✅ merged <pr-sha> + follow-up <pr>`).
+
+**Direct-to-main exception:** only under an explicit, scoped policy (e.g. "release speedrun"). Don't default to it.
+
+### 8. Supersede: close with a credit-pointing comment
+
+```bash
+gh pr close <N> --comment "Closing — superseded by merged #<M> which landed <brief description>. Thanks!"
+```
+
+Check the diffs first — "similar title" is not enough. If the PR is *partially* superseded (the diagnosis is right but only half the changes are still needed), do a partial-apply instead.
+
+### 9. Partial-apply pattern
+
+When a PR has both valuable and questionable changes bundled:
+
+```bash
+cd <main-worktree>
+git pull --ff-only origin main
+
+# Cherry-pick specific files from the PR branch
+git checkout <pr-commit-sha> -- <file1> <file2>
+
+# Review the staged changes, adjust as needed
+git diff --cached
+
+# Apply any surgical edits to files you don't want to bulk-replace
+# (e.g. the PR's file predates a recent main commit you need to preserve)
+
+# Commit with a trailer crediting the original author
+git commit -m "$(cat <<'EOF'
+<subject>
+
+<body explaining what was kept vs dropped>
+
+Co-Authored-By: <author> <[email protected]>
+EOF
+)"
+git push ...  # branch + PR, unless under the direct-to-main exception
+```
+
+Then close the PR with a comment explaining what was applied and what was dropped, referencing the commit SHA.
+
+### 10. Keep the doc current
+
+Every merge, every close, every follow-up → update `<VERSION>_PR_TRIAGE.md`. The doc is your session log. If you're interrupted and resume tomorrow, the doc is the only source of truth for "where am I."
+
+### 11. When triage is done
+
+- Every PR in the doc has a terminal status (✅ merged / ✅ closed / deferred)
+- Progress header shows N/N for each tier
+- Next skill to run is `draft-release-notes` (to regenerate `[Unreleased]` against the new main), then `release-bump`
+
+You can delete the triage doc after the release ships, or keep it in version history as a record.
+
+## Gotchas
+
+- **`main..HEAD` on a stale branch lies.** It shows everything main gained since the branch split as deletions. Always review via `git show HEAD` for the PR's actual commit.
+- **Squash-merging an unrebased branch reverts in-between work.** The squash computes `diff(PR-head, merge-base)`. Rebase moves the merge-base forward.
+- **`mergeable=UNKNOWN`** is transient — GitHub is recomputing after a push. Just try the merge.
+- **Route ordering matters (FastAPI and similar):** `DELETE /history/failed` must be registered *before* `DELETE /history/{id}`, or the parameterized path will consume `"failed"` as an ID.
+- **Apple's `-weak_framework` overrides `-framework`** for the same framework, regardless of order — use it via `cargo:rustc-link-arg=-Wl,-weak_framework,Name` when a dependency hard-links something optional.
+- **Dependency version floors constrain what you can apply.** Before accepting a kwarg rename like `torch_dtype=` → `dtype=`, check the min-version pin supports it. Sometimes the right move is to cherry-pick half the PR.
+- **`cpal::Stream` and similar `!Send` audio types** can't cross `await` points or `spawn_blocking`. Sometimes a "not-ideal but correct" sync wait is the best available fix; flag but don't block.
+- **PyTorch nightly builds are not shippable for releases** — non-deterministic, can regress between runs. If a PR suggests switching to nightly to fix a GPU issue, prefer `TORCH_CUDA_ARCH_LIST=...+PTX` or wait for stable support instead.
+
+## Canonical commands reference
+
+```bash
+# Bulk PR metadata
+gh pr list --state open --limit 50 --json number,title,author,mergeable,mergeStateStatus,additions,deletions,maintainerCanModify,files
+
+# Detailed single-PR view
+gh pr view <N> --json body,author,headRefName,baseRefName,mergeable,maintainerCanModify,files,statusCheckRollup
+
+# The actual commit, not the branch-vs-main diff
+git show HEAD
+git show --stat HEAD
+gh pr diff <N>
+
+# Rebase contributor branch onto current main
+git fetch origin main && git rebase origin/main
+
+# Push rebase back to contributor fork (maintainerCanModify=true required)
+git remote add <author> https://github.com/<author>/<repo>.git
+git fetch <author> <branch>
+git push <author> HEAD:<branch> --force-with-lease
+
+# Merge
+gh pr merge <N> --squash
+
+# Confirm merge SHA for triage doc
+gh pr view <N> --json state,mergeCommit --jq '{state, sha: .mergeCommit.oid[0:7]}'
+
+# Close superseded
+gh pr close <N> --comment "Closing — superseded by merged #<M>. Thanks!"
+```
+
+## Notes
+
+- **Never review a stale branch via `main..HEAD`.** This is the single most important line in this skill.
+- **The triage doc is the session state.** Lose the doc, lose the session. Update it after every action.
+- **Credit contributors even on partial-applies.** Use `Co-Authored-By:` trailers and close comments that link to the applied commit.
+- **Don't let perfect be the enemy of shipped.** A fix that goes from "broken" to "works with a minor known issue" is a strict improvement. Flag the issue, file a follow-up, merge the fix.

.bumpversion.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.2.0
+current_version = 0.4.4
 commit = True
 tag = True
 tag_name = v{new_version}

.dockerignore

@@ -38,7 +38,6 @@ biome.json
 .bumpversion.cfg
 .npmrc
 Makefile
-CHANGELOG.md
 CONTRIBUTING.md
 SECURITY.md
 LICENSE

.github/workflows/ci.yml

@@ -0,0 +1,26 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  frontend-quality:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+
+      - name: Install dependencies
+        run: bun install --frozen-lockfile
+
+      - name: Typecheck app + web
+        run: bun run typecheck
+
+      - name: Build web smoke test
+        run: bun run build:web

.github/workflows/release.yml

@@ -32,6 +32,28 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      # Ubuntu runners ship with ~14 GB free; pip + PyInstaller + torch can
+      # peak well above that during the build. Reclaim ~25 GB by pruning
+      # preinstalled toolchains we don't use. This is what likely tripped
+      # the March 2026 Linux release attempts (see commit 103e98b
+      # "github runners suck") — not a code issue, a disk-pressure one.
+      - name: Free up disk space (ubuntu)
+        if: contains(matrix.platform, 'ubuntu') || contains(matrix.platform, 'namespace')
+        # Pinned to v1.3.1 (SHA) — this job runs with contents: write and
+        # handles signing secrets later, so we don't want a floating ref.
+        uses: jlumbroso/free-disk-space@54081f138730dfa15788a46383842cd2f914a1be
+        with:
+          tool-cache: false
+          android: true
+          dotnet: true
+          haskell: true
+          # large-packages: true would `apt-get remove '^llvm-.*'`, which
+          # cascade-removes reverse deps that won't be pulled back in by the
+          # `llvm-dev` install below. The other flags already free ~20 GB,
+          # enough for the Python + torch + PyInstaller build.
+          large-packages: false
+          swap-storage: true
+
       - name: Install dependencies (ubuntu only)
         if: contains(matrix.platform, 'ubuntu') || contains(matrix.platform, 'namespace')
         run: |
@@ -61,11 +83,24 @@ jobs:
           python -m pip install --upgrade pip
           pip install pyinstaller
           pip install -r backend/requirements.txt
+          pip install --no-deps chatterbox-tts
+          pip install --no-deps hume-tada
 
       - name: Install MLX dependencies (Apple Silicon only)
         if: matrix.backend == 'mlx'
         run: |
           pip install -r backend/requirements-mlx.txt
+          # mlx-audio>=0.3.1 and mlx-lm>=0.31.1 both declare transformers>=5.x,
+          # which conflicts with our 4.57.x cap. The runtime APIs we use work
+          # fine on transformers 4.57.x in practice (verified in dev), so install
+          # them --no-deps. mlx-audio's other runtime deps (huggingface_hub,
+          # librosa, numpy, numba, pyloudnorm) are already in requirements.txt;
+          # miniaudio is in requirements-mlx.txt (needed by mlx_audio.stt,
+          # not transitively pulled by anything else — see issue #505); the
+          # rest (sounddevice, protobuf, sentencepiece, pyyaml, jinja2) are
+          # pulled in by other engines.
+          pip install --no-deps mlx-lm==0.31.1
+          pip install --no-deps mlx-audio==0.4.1
 
       - name: Build Python server (Linux/macOS)
         if: matrix.platform != 'windows-latest'
@@ -122,7 +157,51 @@ jobs:
           p12-file-base64: ${{ secrets.APPLE_CERTIFICATE }}
           p12-password: ${{ secrets.APPLE_CERTIFICATE_PASSWORD }}
 
-      - uses: tauri-apps/tauri-action@v0
+      - name: Disk / environment snapshot (pre-bundle debug)
+        if: contains(matrix.platform, 'ubuntu') || contains(matrix.platform, 'namespace')
+        run: |
+          echo "=== df -h ==="
+          df -h
+          echo "=== free -h ==="
+          free -h
+          echo "=== Rust / Cargo ==="
+          rustc --version
+          cargo --version
+          echo "=== Bun ==="
+          bun --version
+          echo "=== Tauri CLI ==="
+          cd tauri && bun run tauri --version
+
+      - name: Extract release notes from CHANGELOG.md
+        id: changelog
+        shell: bash
+        run: |
+          # Get the version from the tag (strip leading 'v')
+          VERSION="${GITHUB_REF_NAME#v}"
+
+          # Extract the section for this version from CHANGELOG.md
+          # Matches from "## [X.Y.Z]" until the next "## [" heading
+          NOTES=$(sed -n "/^## \[${VERSION}\]/,/^## \[/{/^## \[${VERSION}\]/d;/^## \[/d;p;}" CHANGELOG.md)
+
+          # Fall back to a placeholder if the version isn't in the changelog
+          if [ -z "$(echo "$NOTES" | tr -d '[:space:]')" ]; then
+            NOTES="See the assets below to download and install this version."
+          fi
+
+          # Use multiline output syntax
+          {
+            echo "notes<<CHANGELOG_EOF"
+            echo "$NOTES"
+            echo "CHANGELOG_EOF"
+          } >> "$GITHUB_OUTPUT"
+
+      # Linux hang watchdog: previous releases silently wedged inside tauri
+      # bundling (possibly linuxdeploy/AppImage download, possibly cargo link).
+      # Cap the step at 30 min so we get logs instead of waiting out the 6hr
+      # job timeout. Other platforms historically complete in ~25 min, so 45
+      # is comfortable.
+      - uses: tauri-apps/[email protected]
+        timeout-minutes: ${{ (contains(matrix.platform, 'ubuntu') || contains(matrix.platform, 'namespace')) && 30 || 45 }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
@@ -134,26 +213,59 @@ jobs:
           APPLE_PROVIDER_SHORT_NAME: ${{ secrets.APPLE_PROVIDER_SHORT_NAME }}
           APPLE_API_ISSUER: ${{ secrets.APPLE_API_ISSUER }}
           APPLE_API_KEY: ${{ secrets.APPLE_API_KEY }}
+          # Stream subprocess stdout/stderr so the hang is visible in logs.
+          CARGO_TERM_VERBOSE: "true"
+          RUST_BACKTRACE: "1"
         with:
           projectPath: tauri
           tagName: v__VERSION__
           releaseName: "voicebox v__VERSION__"
-          releaseBody: |
-            ## What's Changed
-            See the assets below to download and install this version.
-
-            ### Installation
-            - **macOS (Apple Silicon)**: Download the `aarch64.dmg` file - uses MLX for fast native inference
-            - **macOS (Intel)**: Download the `x64.dmg` file - uses PyTorch
-            - **Windows**: Download the `.msi` installer
-            - **Linux**: Compile from source (see README)
-
-            The app includes automatic updates - future updates will be installed automatically.
+          releaseBody: ${{ steps.changelog.outputs.notes }}
           releaseDraft: true
           prerelease: false
           args: ${{ matrix.args }}
           includeUpdaterJson: true
 
+      # Tauri's bundler signs the .app and notarizes it, but the .dmg wrapper
+      # ships unnotarized. Gatekeeper rejects that on macOS 15 Sequoia (caught
+      # by Homebrew Cask CI) and causes "app isn't signed" dialogs on older
+      # Intel Macs when Apple's notarization servers are slow (see issue #509).
+      # Submit the .dmg to notarytool, staple the ticket, and overwrite the
+      # release asset uploaded by tauri-action.
+      - name: Notarize and staple DMG (macOS)
+        if: matrix.platform == 'macos-latest' || matrix.platform == 'macos-15-intel'
+        env:
+          APPLE_API_KEY_ID: ${{ secrets.APPLE_API_KEY }}
+          APPLE_API_ISSUER: ${{ secrets.APPLE_API_ISSUER }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          set -euo pipefail
+          KEY_PATH="$HOME/.appstoreconnect/private_keys/AuthKey_${APPLE_API_KEY_ID}.p8"
+          TARGET=$(echo "${{ matrix.args }}" | sed -n 's/.*--target \([a-z0-9_-]*\).*/\1/p')
+          DMG_DIR="tauri/src-tauri/target/${TARGET}/release/bundle/dmg"
+          # Match the release tag tauri-action resolved from tauri.conf.json's
+          # version field; GITHUB_REF_NAME is a branch name under workflow_dispatch.
+          RELEASE_TAG="v$(jq -r '.version' tauri/src-tauri/tauri.conf.json)"
+          shopt -s nullglob
+          dmgs=("${DMG_DIR}"/*.dmg)
+          if [ ${#dmgs[@]} -eq 0 ]; then
+            echo "::error::No DMGs found in ${DMG_DIR} — tauri bundler output path may have changed"
+            exit 1
+          fi
+          for dmg in "${dmgs[@]}"; do
+            echo "::group::Notarize $(basename "$dmg")"
+            xcrun notarytool submit "$dmg" \
+              --key "$KEY_PATH" \
+              --key-id "$APPLE_API_KEY_ID" \
+              --issuer "$APPLE_API_ISSUER" \
+              --wait --timeout 20m
+            xcrun stapler staple "$dmg"
+            spctl -a -t open --context context:primary-signature -vv "$dmg"
+            gh release upload "${RELEASE_TAG}" "$dmg" --clobber \
+              --repo "${GITHUB_REPOSITORY}"
+            echo "::endgroup::"
+          done
+
   build-cuda-windows:
     runs-on: windows-latest
     permissions:
@@ -173,43 +285,55 @@ jobs:
           python -m pip install --upgrade pip
           pip install pyinstaller
           pip install -r backend/requirements.txt
+          pip install --no-deps chatterbox-tts
+          pip install --no-deps hume-tada
 
-      - name: Install PyTorch with CUDA 12.1
+      - name: Install PyTorch with CUDA 12.8
         run: |
-          pip install torch --index-url https://download.pytorch.org/whl/cu121 --force-reinstall --no-deps
-          pip install torchaudio --index-url https://download.pytorch.org/whl/cu121
+          pip install torch --index-url https://download.pytorch.org/whl/cu128 --force-reinstall --no-deps
+          pip install torchaudio --index-url https://download.pytorch.org/whl/cu128 --force-reinstall --no-deps
 
       - name: Verify CUDA support in torch
         run: |
           python -c "import torch; print(f'CUDA available in build: {torch.cuda.is_available()}'); print(f'CUDA version: {torch.version.cuda}')"
 
-      - name: Build CUDA server binary
+      - name: Build CUDA server binary (onedir)
         shell: bash
         working-directory: backend
+        env:
+          # Include Blackwell (sm_120) via PTX forward compatibility.
+          # Pre-built PyTorch cu128 wheels ship native kernels for sm_80/86/89/90
+          # but not sm_120. Setting this env var causes torch.utils.cpp_extension
+          # (and any JIT-compiled kernels) to target Blackwell GPUs as well.
+          TORCH_CUDA_ARCH_LIST: "8.0;8.6;8.9;9.0;12.0+PTX"
         run: python build_binary.py --cuda
 
-      - name: Split binary for GitHub Releases
+      - name: Package into server core + CUDA libs archives
         shell: bash
         run: |
-          python scripts/split_binary.py \
-            backend/dist/voicebox-server-cuda.exe \
-            --output release-assets/
+          python scripts/package_cuda.py \
+            backend/dist/voicebox-server-cuda/ \
+            --output release-assets/ \
+            --cuda-libs-version cu128-v1 \
+            --torch-compat ">=2.7.0,<2.11.0"
 
-      - name: Upload split parts to GitHub Release
+      - name: Upload archives to GitHub Release
         if: startsWith(github.ref, 'refs/tags/')
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v2
         with:
           files: |
-            release-assets/voicebox-server-cuda.part*.exe
-            release-assets/voicebox-server-cuda.sha256
-            release-assets/voicebox-server-cuda.manifest
+            release-assets/voicebox-server-cuda.tar.gz
+            release-assets/voicebox-server-cuda.tar.gz.sha256
+            release-assets/cuda-libs-cu128-v1.tar.gz
+            release-assets/cuda-libs-cu128-v1.tar.gz.sha256
+            release-assets/cuda-libs.json
           draft: true
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Upload binary as workflow artifact
+      - name: Upload onedir as workflow artifact
         uses: actions/upload-artifact@v4
         with:
           name: voicebox-server-cuda-windows
-          path: backend/dist/voicebox-server-cuda.exe
+          path: backend/dist/voicebox-server-cuda/
           retention-days: 7

.gitignore

@@ -49,8 +49,22 @@ logs/
 # Generated files
 app/openapi.json
 tauri/src-tauri/binaries/*
+tauri/src-tauri/gen/Assets.car
+tauri/src-tauri/gen/voicebox.icns
+tauri/src-tauri/gen/partial.plist
+
+# PyInstaller
+*.spec
+
+# Windows artifacts
+nul
 
 # Temporary
 tmp/
 temp/
 *.tmp
+
+# E2E test artifacts
+backend/tests/results/
+backend/tests/fixtures/reference_voice.wav
+backend/tests/fixtures/reference_voice.txt

CHANGELOG.md

@@ -1,94 +1,674 @@
+<!-- This file is compiled automatically during the release workflow. -->
+<!-- Do not edit manually — your changes will be overwritten. -->
+<!-- To update the draft: ask the agent to use the draft-release-notes skill. -->
+<!-- To finalize a release: ask the agent to use the release-bump skill. -->
+
 # Changelog
 
-All notable changes to Voicebox will be documented in this file.
-
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
-and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
-
 ## [Unreleased]
 
-### Fixed
-- **Profile Name Validation** - Added proper validation to prevent duplicate profile names ([#134](https://github.com/jamiepine/voicebox/issues/134))
-  - Users now receive clear error messages when attempting to create or update profiles with duplicate names
-  - Improved error handling in create and update profile API endpoints
-  - Added comprehensive test suite for duplicate name validation
+## [0.4.4] - 2026-04-21
 
-## [0.1.0] - 2026-01-25
+Hotfix for a regression in 0.4.3 where generation and transcription could fail outright with "offline mode is enabled" even when the user was online.
 
-### Added
+### Reliability
 
-#### Core Features
-- **Voice Cloning** - Clone voices from audio samples using Qwen3-TTS (1.7B and 0.6B models)
-- **Voice Profile Management** - Create, edit, and organize voice profiles with multiple samples
-- **Speech Generation** - Generate high-quality speech from text using cloned voices
-- **Generation History** - Track all generations with search and filtering capabilities
-- **Audio Transcription** - Automatic transcription powered by Whisper
-- **In-App Recording** - Record audio samples directly in the app with waveform visualization
+- **Inference no longer fails with "offline mode is enabled" while online** ([#524](https://github.com/jamiepine/voicebox/pull/524), reverts the inference-path guards from [#503](https://github.com/jamiepine/voicebox/pull/503)). 0.4.3 wrapped every inference body (`generate`, `transcribe`, `create_voice_clone_prompt`) with a process-wide `HF_HUB_OFFLINE` flip to stop lazy HuggingFace lookups from hanging when the network drops mid-inference ([#462](https://github.com/jamiepine/voicebox/issues/462)). That flag also blocks legitimate metadata calls (e.g. `HfApi().model_info` for revision resolution) so online users started seeing generation fail outright. Inference now runs with the process's default HF state. Load-time offline guards — which weren't the source of the regression — stay in place.
 
-#### Desktop App
-- **Tauri Desktop App** - Native desktop application for macOS, Windows, and Linux
-- **Local Server Mode** - Embedded Python server runs automatically
-- **Remote Server Mode** - Connect to a remote Voicebox server on your network
-- **Auto-Updates** - Automatic update notifications and installation
+**Known caveat**: users generating without an internet connection may see brief pauses during inference while HuggingFace metadata lookups time out (typically ~30s, after which the library recovers). A proper offline-mode toggle is planned for 0.4.5.
 
-#### API
-- **REST API** - Full REST API for voice synthesis and profile management
-- **OpenAPI Documentation** - Interactive API docs at `/docs` endpoint
-- **Type-Safe Client** - Auto-generated TypeScript client from OpenAPI schema
+## [0.4.3] - 2026-04-20
 
-#### Technical
-- **Voice Prompt Caching** - Fast regeneration with cached voice prompts
-- **Multi-Sample Support** - Combine multiple audio samples for better voice quality
-- **GPU/CPU/MPS Support** - Automatic device detection and optimization
-- **Model Management** - Lazy loading and VRAM management
-- **SQLite Database** - Local data persistence
+A patch focused on two user-impacting reliability fixes: macOS DMG notarization (unblocks `brew install voicebox` on macOS 15 Sequoia and fixes spurious "app isn't signed" Gatekeeper dialogs on older Intel Macs) and Kokoro Japanese voice initialization on fresh installs.
 
-### Technical Details
+### macOS
 
-- Built with Tauri v2 (Rust + React)
-- FastAPI backend with async Python
-- TypeScript frontend with React Query and Zustand
-- Qwen3-TTS for voice cloning
-- Whisper for transcription
+- **DMGs are now notarized and stapled** ([#523](https://github.com/jamiepine/voicebox/pull/523)). Tauri's bundler notarizes the `.app` inside the DMG but ships the DMG wrapper itself unnotarized. Gatekeeper rejects that on macOS 15 Sequoia (confirmed by Homebrew Cask CI failing on both arm and intel Sequoia runners) and causes the "the app is not signed" dialog on older Intel Macs when Apple's notarization servers are slow or unreachable ([#509](https://github.com/jamiepine/voicebox/issues/509)). The release workflow now submits each DMG to `notarytool`, staples the ticket, verifies with `spctl`, and overwrites the draft-release asset `tauri-action` uploaded. Adds ~5-10 min per macOS job.
+
+### Backend
+
+- **Kokoro Japanese voices no longer crash on fresh installs** ([#521](https://github.com/jamiepine/voicebox/pull/521), fixes [#514](https://github.com/jamiepine/voicebox/issues/514)). `misaki[ja]` pulls in `fugashi`, which needs a MeCab dictionary on disk. The `unidic` package that was being installed ships no data and expects a ~526MB runtime download that `just setup` doesn't run (and which wouldn't survive PyInstaller anyway). Swapped to `unidic-lite`, which bundles a MeCab-compatible dict inside the wheel (~50MB). Collected in `build_binary.py` so frozen builds pick up `unidic_lite/dicdir/`.
+
+## [0.4.2] - 2026-04-20
+
+This release localizes the entire app. English, Simplified Chinese (zh-CN), Traditional Chinese (zh-TW), and Japanese (ja) are wired up end-to-end across every tab, modal, dialog, and toast — 559 translation keys per locale, parity verified. Plus a batch of reliability fixes: offline-mode now actually stays offline, Chatterbox accepts reference samples it used to reject, MLX Qwen 0.6B points at the right repo, and macOS system audio survives backgrounding.
+
+### Internationalization ([#508](https://github.com/jamiepine/voicebox/pull/508))
+- **i18next foundation** with an in-app language switcher that re-renders the tree on change — lazy-loaded components were holding stale strings without an explicit key-bump on the React root.
+- **Four locales** at full coverage: English, Simplified Chinese, Traditional Chinese, Japanese. No partial/English-fallback surfaces.
+- **Every user-visible surface translated**: Stories (list, content editor, dialogs, toasts), Effects (list, detail, chain editor, built-in preset names), Voices (table, search, inspector, Create/Edit modal, audio sample panels), Audio Channels (list, dialogs, device picker), history + story dropdown menus, ProfileCard / ProfileList / HistoryTable, and the unsupported-model note.
+- **Relative dates** localize via `date-fns` locale objects (`3 days ago` → `3 天前` / `3 日前`) — `Intl.RelativeTimeFormat` doesn't produce the phrasing we use in the history table.
+- **Dev-build version suffix** (`v0.4.2 (dev)` / `(开发版)` / `(開發版)` / `(開発版)`) is now locale-aware.
+- **559 translation keys** across all four locales.
+
+### Reliability
+- **`HF_HUB_OFFLINE` now guards every inference path** ([#503](https://github.com/jamiepine/voicebox/pull/503)) — some engines were still attempting a HuggingFace metadata roundtrip on first load when offline mode was enabled, causing hangs on airgapped or flaky networks.
+- **Chatterbox reference samples are preprocessed instead of rejected** ([#502](https://github.com/jamiepine/voicebox/pull/502)) — samples outside the expected sample rate or channel layout are resampled to match, rather than failing with an opaque error.
+- **MLX Qwen 0.6B repo path fixed** ([#501](https://github.com/jamiepine/voicebox/pull/501)) — now points at the published `mlx-community` repo so the model actually downloads on Apple Silicon.
+- **macOS system audio survives backgrounding** ([#486](https://github.com/jamiepine/voicebox/pull/486), closes [#41](https://github.com/jamiepine/voicebox/issues/41)) — WKWebView was tearing down the audio session when the app lost focus, silently killing system-audio capture.
+- **MLX backend `miniaudio` dependency pinned** ([#506](https://github.com/jamiepine/voicebox/pull/506)) — `mlx_audio.stt` needs it at runtime and nothing else transitively pulled it in, so `--no-deps` installs were breaking on first use.
+
+### Landing / Docs
+- **New `/download` page** ([#487](https://github.com/jamiepine/voicebox/pull/487)) — no more dumping first-time visitors onto the GitHub releases list. The API example snippet on the landing page also got an accuracy pass.
+- **Download redirects work behind reverse proxies** ([#498](https://github.com/jamiepine/voicebox/pull/498)) — uses the public origin instead of `localhost` when resolving platform-specific installer URLs.
+- **MDX docs audited against the multi-engine backend** ([#484](https://github.com/jamiepine/voicebox/pull/484)) — stale single-engine assumptions removed.
+- **Three more tutorials + mobile navbar / hero CTA fixes** ([#483](https://github.com/jamiepine/voicebox/pull/483)).
+
+### Linux
+- **Still not shipping.** The re-enable attempt ([#488](https://github.com/jamiepine/voicebox/pull/488)) landed on `main` but CI still hangs in the `tauri-action` bundler step on `ubuntu-22.04` — no output for 25+ minutes after `rpm` bundling, even with `createUpdaterArtifacts: false` and `--bundles deb,rpm`. The matrix entry is disabled again for 0.4.2; the ubuntu-specific setup steps stay in the workflow so re-enabling is a one-line change once we identify the hang. Next release will take another pass.
+
+### New Contributors
+- [@shekharyv](https://github.com/shekharyv) — download redirects behind reverse proxies ([#498](https://github.com/jamiepine/voicebox/pull/498))
+
+## [0.4.1] - 2026-04-18
+
+A fast follow-up to 0.4.0 focused on making the new engines actually load in the production binary — plus generation cancellation, Linux system-audio capture, and the repo's first PR-time type check. Five first-time contributors shipped in this release.
+
+0.4.0 introduced three new TTS engines, but the frozen PyInstaller binary tripped over several Python-ecosystem quirks that don't show up in the dev venv: `transformers` opening `.py` sources at runtime, `scipy.stats._distn_infrastructure` hitting a frozen-importer `NameError`, and `chatterbox-multilingual` failing to find its Chinese segmenter dictionary. This release patches all of those in one sweep.
+
+### Frozen-Binary Reliability ([#438](https://github.com/jamiepine/voicebox/pull/438))
+- **Kokoro** now bundles `.py` sources alongside `.pyc` via `--collect-all kokoro` so `transformers`' `_can_set_attn_implementation` regex scan can read them — previously `FileNotFoundError: kokoro/modules.py` killed Kokoro loading in production builds
+- **Chatterbox Multilingual** now bundles `spacy_pkuseg/dicts/default.pkl` and the package's native `.so` extensions via `--collect-all spacy_pkuseg` — previously the Chinese word segmenter crashed with `FileNotFoundError` on first load
+- **scipy.stats._distn_infrastructure** — new runtime hook source-patches the trailing `del obj` (which raises `NameError` under PyInstaller's frozen importer because the preceding list comprehension evaluates empty) to `globals().pop('obj', None)`, unblocking `librosa` → `scipy.signal` → `scipy.stats` for every TTS engine that depends on librosa
+- **transformers.masking_utils** — same runtime hook forces `_is_torch_greater_or_equal_than_2_6 = False` so the older `sdpa_mask_older_torch` path is selected; the 2.6+ path uses `TransformGetItemToIndex()`, a real `torch._dynamo` graph transform our permissive stub can't reproduce
+- **torch._dynamo** — no-op stub replaces the real module before `transformers` imports it, preventing the `torch._numpy._ufuncs` import crash (`NameError: name 'name' is not defined`) that blocked Kokoro and every engine pulling in `flex_attention`
+- `.spec` paths are now repo-relative instead of absolute, so the generated spec is portable across machines and CI
+
+### Generation
+- **Cancel queued or running generations** ([#444](https://github.com/jamiepine/voicebox/pull/444)) — new `/generate/{id}/cancel` endpoint and a Stop button on the history row while generating. The serial queue now tracks per-ID state (queued / running / cancelled) so queued jobs are skipped before the worker picks them up and running jobs are `.cancel()`-ed mid-flight; `run_generation` catches `CancelledError` and marks the row `failed` with a "cancelled" error.
+- **Legacy `data/` path prefix resolution** ([#440](https://github.com/jamiepine/voicebox/pull/440)) — generations stored with the old `data/` prefix under pre-0.4 installs now resolve correctly after the storage root moved, fixing 404s for historical audio.
+
+### Model Migration
+- Migration dialog no longer hangs when the cache is empty ([#439](https://github.com/jamiepine/voicebox/pull/439)) — the backend now emits a completion SSE event even when zero models are moved.
+- Storage-change flow surfaces a toast when there's nothing to migrate ([#433](https://github.com/jamiepine/voicebox/pull/433)) instead of proceeding with a no-op move and restarting the server.
+- Deleting all generations from a voice profile now deletes the associated version files and DB rows too ([#447](https://github.com/jamiepine/voicebox/pull/447)) — previously orphaned versions accumulated in storage.
+
+### Platform
+- **Linux system audio capture** ([#457](https://github.com/jamiepine/voicebox/pull/457)) — `cpal`'s ALSA backend doesn't expose PulseAudio/PipeWire monitor sources by name, so the previous device-name search never matched and silently fell back to the microphone. Detection now uses `pactl get-default-sink` + `pactl list short sources` and routes via `PULSE_SOURCE`, with the name-based search retained as a fallback when `pactl` is absent.
+
+### Frontend CI
+- First PR-time quality gate ([#418](https://github.com/jamiepine/voicebox/pull/418)) — new `.github/workflows/ci.yml` runs `bun run typecheck` + `bun run build:web` on every PR. Fixed pre-existing type issues that were being suppressed with `@ts-expect-error`, cleaned up a dep-array typo (`[platform.metadata.isTauricheckOnMountcheckForUpdates]`) in `useAutoUpdater`, and removed 100+ lines of dead `ModelItem` code from `ModelManagement.tsx`.
+- Follow-up: widened `apiClient.migrateModels()` return type to include `moved` and `errors` so the storage-change handler typechecks against the real backend response ([#470](https://github.com/jamiepine/voicebox/pull/470)).
+
+### Docs
+- Clarified in the Quick Start + README that paralinguistic tags (`[laugh]`, `[sigh]`) only work with Chatterbox Turbo; other engines read them as literal text ([#450](https://github.com/jamiepine/voicebox/pull/450)).
+
+### New Contributors
+- [@Bortlesboat](https://github.com/Bortlesboat) — generation cancellation (#444)
+- [@gaojulong](https://github.com/gaojulong) — migration dialog hang fix (#439)
+- [@fuleinist](https://github.com/fuleinist) — migration no-op toast (#433)
+- [@erionjuniordeandrade-a11y](https://github.com/erionjuniordeandrade-a11y) — frontend CI + type hardening (#418)
+- [@estefrac](https://github.com/estefrac) — Linux pactl system-audio capture (#457)
+
+## [0.4.0] - 2026-04-16
+
+The biggest Voicebox release yet. Three new TTS engines bring the lineup to **seven** — HumeAI TADA, Kokoro 82M, and Qwen CustomVoice join Qwen3-TTS, LuxTTS, Chatterbox Multilingual, and Chatterbox Turbo. GPU support broadens to Intel Arc (XPU) and NVIDIA Blackwell (RTX 50-series), with runtime diagnostics that warn when your PyTorch build doesn't match your GPU. The CUDA backend is now split into independently versioned server and library archives, so upgrading no longer redownloads 4 GB of PyTorch/CUDA DLLs.
+
+This release also marks a big community moment: **13 new contributors** shipped fixes and features in 0.4.0. Thirty-plus bug fixes target the most-reported issues in the tracker — numpy 2.x TTS crashes, Windows background-server reliability, macOS 11 launch failures, audio playback silence, Stories clip-splitting races, history status staleness, and more.
+
+### New TTS Engines
+
+#### HumeAI TADA — Expressive English & Multilingual ([#296](https://github.com/jamiepine/voicebox/pull/296))
+- Added `tada-1b` (English) and `tada-3b-ml` (multilingual) backends
+- Replaced `descript-audio-codec` with a lightweight DAC shim to cut dependencies
+- Switched audio decoding to `soundfile` to sidestep `torchcodec` bundling issues
+- Redirected gated Llama tokenizer lookups to an ungated mirror so model loading works out of the box
+- Fixed tokenizer patch that was corrupting `AutoTokenizer` for other engines
+- Fixed TorchScript error in frozen builds
+
+#### Kokoro 82M — Fast Lightweight TTS ([#325](https://github.com/jamiepine/voicebox/pull/325))
+- Added Kokoro 82M engine with a new voice profile type system that distinguishes preset voices from cloned profiles
+- Profile grid now handles engine compatibility directly — removed redundant dropdown filtering
+- Tightened Kokoro profile handling so preset voices can't be edited like cloned profiles
+
+#### Qwen CustomVoice ([#328](https://github.com/jamiepine/voicebox/pull/328))
+- Added `qwen-custom-voice` preset engine backed by Qwen3-TTS
+- Enforced preset/profile engine compatibility across the generation flow
+- Floating generator now shows all engines instead of silently filtering
+
+### Voice Profile UX
+
+Until 0.4, every engine in Voicebox was a cloning model, so every voice profile was usable with every engine and the profile grid just showed them all. Introducing Kokoro and Qwen CustomVoice — which work from preset voices rather than cloned samples — broke that assumption for the first time. An early cut on `main` filtered the grid by the selected engine, which left users running pre-release builds thinking their cloned voices had vanished whenever they switched to a preset-only engine.
+
+This release ships the resolution before it ever reaches a tagged version:
+
+- **Grey-out instead of filter** — all profiles are always visible; unsupported ones render dimmed with a compatibility hint at the bottom of the grid
+- **Auto-switch on selection** — clicking a greyed-out profile selects it AND switches the engine to a compatible one, instead of silently doing nothing
+- **Instruct toggle restored for Qwen CustomVoice** — the floating generate box now reveals a delivery-instructions input (tone, emotion, pace) when CustomVoice is selected. Hidden across the board while the new multi-engine lineup was stabilizing because most engines don't honor the kwarg; now conditionally exposed only for the one engine that was actually trained for instruction-based style control
+- Supported profiles sort first; the grid scrolls the selected profile into view after engine/sort changes
+- Fixed engine desync on tab navigation — the form now initializes its engine from the store
+- Fixed the disabled-and-selected card click edge case by bouncing selection to re-trigger the auto-switch
+- Cleaned up scroll effect timers (requestAnimationFrame + setTimeout) to prevent stale DOM writes on unmount or rapid selection changes
+
+### GPU & Platform
+
+#### Intel Arc (XPU) Support ([#320](https://github.com/jamiepine/voicebox/pull/320))
+- First-class Intel Arc support across all PyTorch-based backends
+- Device-aware seeding, XPU detection in the GPU status panel, and setup flow detection
+- Reports correct device name and VRAM in settings
+
+#### Blackwell / RTX 50-series Support ([#316](https://github.com/jamiepine/voicebox/pull/316), [#401](https://github.com/jamiepine/voicebox/pull/401))
+- Upgraded the CUDA backend from cu126 → cu128 for RTX 50-series support
+- Added `sm_120+PTX` to the CUDA build via `TORCH_CUDA_ARCH_LIST` for forward-compatibility with Blackwell architectures (closes 5 open reports: #386, #395, #396, #399, #400)
+- GPU settings UI fixes around install/uninstall state
+
+#### GPU Compatibility Diagnostics ([#367](https://github.com/jamiepine/voicebox/pull/367), adapted)
+- New `check_cuda_compatibility()` compares the current device's compute capability against the bundled PyTorch's architecture list
+- Health endpoint exposes a `gpu_compatibility_warning` field so the UI can surface mismatches
+- Startup logs a `WARN` when the installed PyTorch build doesn't support the detected GPU
+- GPU status label shows `[UNSUPPORTED - see logs]` — no more silent "no kernel image" failures
+
+#### Split CUDA Backend ([#298](https://github.com/jamiepine/voicebox/pull/298))
+- CUDA backend now ships as two independently versioned archives: a small server binary and a large libs archive (the ~4 GB of PyTorch/CUDA DLLs)
+- Upgrading Voicebox no longer redownloads the libs archive when only the server binary changed
+- Added `asyncio.Lock` around `download_cuda_binary()` so auto-update and manual download can't race on the same temp file ([#428](https://github.com/jamiepine/voicebox/pull/428))
+- Updated `package_cuda.py` for PyInstaller 6.18 onedir layout
+- Temp archives are always cleaned up on failure, even when the install aborts mid-extract
+
+### Bug Fixes
+
+#### Critical: TTS Generation
+- **numpy 2.x `torch.from_numpy` crash** ([#361](https://github.com/jamiepine/voicebox/pull/361)) — torch compiled against numpy 1.x ABI fails silently when paired with numpy 2.x, causing `RuntimeError: Numpy is not available` / `Unable to create tensor` on every TTS request in bundled macOS Intel / Rosetta builds. Pinned `numpy<2.0` in requirements and added a PyInstaller runtime hook with a `ctypes.memmove` fallback as belt-and-suspenders. Hardened afterward to raise on unknown dtypes instead of silently reinterpreting bytes as float32.
+
+#### Platform Reliability
+- **Windows background server** ([#402](https://github.com/jamiepine/voicebox/pull/402)) — "keep server running after close" now actually keeps the server running. The HTTP `/watchdog/disable` request could lose the race against process exit on Windows; added a `.keep-running` sentinel file as a synchronous fallback, with stale-sentinel cleanup on startup to avoid orphan server processes
+- **macOS 11 launch crash** ([#424](https://github.com/jamiepine/voicebox/pull/424)) — weak-linked ScreenCaptureKit so the app can launch on macOS < 12.3 instead of crashing at dyld resolution. Gated system audio capture behind a real `sw_vers` version check so unsupported systems cleanly advertise "not available" rather than crashing at runtime
+- **macOS Intel (x86_64) setup** ([#416](https://github.com/jamiepine/voicebox/pull/416)) — relaxed `torch>=2.7.0` → `torch>=2.2.0`. PyTorch dropped pre-built x86_64 wheels after 2.2.2, so Intel Mac devs could no longer `pip install`. Now resolves to the latest compatible torch per platform
+- **Offline model loading** ([#318](https://github.com/jamiepine/voicebox/pull/318)) — Qwen TTS and Whisper force offline mode when loading cached models, so startup works without network access
+- **GUI startup with external server** ([#319](https://github.com/jamiepine/voicebox/pull/319)) — fixed GUI launch when pointed at a remote/external server, and added data refresh on server switch; hardened health validation and error handling
+- **Qwen3-TTS cache split on Windows** (adapted from [#218](https://github.com/jamiepine/voicebox/pull/218)) — route `Qwen3TTSModel.from_pretrained` through `hf_constants.HF_HUB_CACHE` so the speech tokenizer and `preprocessor_config.json` resolve from a single cache root
+- **Qwen3-TTS bundling** ([#305](https://github.com/jamiepine/voicebox/pull/305)) — bundle `qwen_tts` source files in the PyInstaller build to fix `inspect.getsource` errors in frozen builds
+- **Backend import paths** ([#345](https://github.com/jamiepine/voicebox/pull/345)) — moved lazy imports to top-level with absolute paths to resolve the "Failed to Save" preset error caused by `ModuleNotFoundError` in production builds
+- **Effects service import** ([#384](https://github.com/jamiepine/voicebox/pull/384)) — fixed `ModuleNotFoundError` on preset create/update by switching to relative imports (#349)
+
+#### Audio & Playback
+- **cpal stream silent playback** ([#405](https://github.com/jamiepine/voicebox/pull/405)) — `cpal::Stream` was dropped on function return immediately after `play()`, causing every playback to fall silent. Now holds the stream until either the buffer drains or the stop flag fires (#404)
+
+#### Stories & History
+- **Clip-splitting race** ([#403](https://github.com/jamiepine/voicebox/pull/403)) — rapid double-clicks on split could race through `split_story_item` with inconsistent state. Added `with_for_update()` row locking on the backend and an `isPending` guard on the frontend (#366)
+- **History `status` staleness** ([#394](https://github.com/jamiepine/voicebox/pull/394)) — `GET /history/{id}` was hardcoding `status="completed"` regardless of the DB row, breaking any client polling for job completion. Now returns `status`, `error`, `engine`, `model_size`, and `is_favorited` from the actual row
+- **"Clear failed" bulk button** ([#412](https://github.com/jamiepine/voicebox/pull/412)) — new `DELETE /history/failed` endpoint and a header strip showing `"N failed generations"` with a Clear button, complementing the per-row trash icon added in #321 (#410)
+- **Delete failed generations** ([#321](https://github.com/jamiepine/voicebox/pull/321)) — added a trash icon next to the retry button so failed entries can be cleaned up without having to retry first
+
+#### Security & Safety
+- **Voice prompt cache hardening** ([#429](https://github.com/jamiepine/voicebox/pull/429)) — `torch.load(weights_only=True)` on cached voice prompts per PyTorch 2.6 recommendation; replaced string-based SPA path guard with `Path.is_relative_to()` for more robust path-traversal protection
+
+#### Infrastructure & Docker
+- **Docker web build** ([#344](https://github.com/jamiepine/voicebox/pull/344)) — include `CHANGELOG.md` in the Docker web build so the in-app changelog page works in Docker deployments
+- **Docker numba cache** ([#425](https://github.com/jamiepine/voicebox/pull/425)) — set `NUMBA_CACHE_DIR` in docker-compose so numba can write its JIT cache in container runtime (#308)
+- **Relative media paths** ([#332](https://github.com/jamiepine/voicebox/pull/332)) — media paths now stored relative to the configured data dir rather than resolved against CWD, so the data directory is portable between installs
+
+### Developer Tooling
+
+- New `triage-prs` agent skill — encodes the end-to-end PR-speedrun workflow (classification → triage doc → rebase → squash-merge → follow-ups) so future release cycles can reproduce it
+- Rewrote the TTS engine guide with the patterns learned from adding TADA and Kokoro
+- Added the API refactor plan and CUDA libs addon design doc
+- Fixed broken links in the Get Started section ([#332](https://github.com/jamiepine/voicebox/pull/332))
+
+### New Contributors
+
+Huge thank you to everyone who contributed their first PR to Voicebox in this release:
+
+[@liorshahverdi](https://github.com/liorshahverdi), [@nicoschtein](https://github.com/nicoschtein), [@ArfianID](https://github.com/ArfianID), [@aimaaaimaa](https://github.com/aimaaaimaa), [@maxmcoding](https://github.com/maxmcoding), [@Khalodddd](https://github.com/Khalodddd), [@LuisSambrano](https://github.com/LuisSambrano), [@shaun0927](https://github.com/shaun0927), [@malletfils](https://github.com/malletfils), [@mvanhorn](https://github.com/mvanhorn), [@kuishou68](https://github.com/kuishou68), [@txhno](https://github.com/txhno), [@MukundaKatta](https://github.com/MukundaKatta)
+
+## [0.3.0] - 2026-03-17
+
+This release rewrites the backend into a modular architecture, overhauls the settings UI into routed sub-pages, fixes audio player freezing, migrates documentation to Fumadocs, and ships a batch of bug fixes targeting the most-reported issues from the tracker.
+
+The backend's 3,000-line monolith `main.py` has been decomposed into domain routers, a services layer, and a proper database package. A style guide and ruff configuration now enforce consistency. On the frontend, settings have been split into dedicated routed pages with server logs, a changelog viewer, and an about page. The audio player no longer freezes mid-playback, and model loading status is now visible in the UI. Seven user-reported bugs have been fixed, including server crashes during sample uploads, generation list staleness, cryptic error messages, and CUDA support for RTX 50-series GPUs.
+
+### Settings Overhaul ([#294](https://github.com/jamiepine/voicebox/pull/294))
+- Split settings into routed sub-tabs: General, Generation, GPU, Logs, Changelog, About
+- Added live server log viewer with auto-scroll
+- Added in-app changelog page that parses `CHANGELOG.md` at build time
+- Added About page with version info, license, and generation folder quick-open
+- Extracted reusable `SettingRow` component for consistent setting layouts
+
+### Audio Player Fix ([#293](https://github.com/jamiepine/voicebox/pull/293))
+- Fixed audio player freezing during playback
+- Improved playback UX with better state management and listener cleanup
+- Fixed restart race condition during regeneration
+- Added stable keys for audio element re-rendering
+- Improved accessibility across player controls
+
+### Backend Refactor ([#285](https://github.com/jamiepine/voicebox/pull/285))
+- Extracted all routes from `main.py` into 13 domain routers under `backend/routes/` — `main.py` dropped from ~3,100 lines to ~10
+- Moved CRUD and service modules into `backend/services/`, platform detection into `backend/utils/`
+- Split monolithic `database.py` into a `database/` package with separate `models`, `session`, `migrations`, and `seed` modules
+- Added `backend/STYLE_GUIDE.md` and `pyproject.toml` with ruff linting config
+- Removed dead code: unused `_get_cuda_dll_excludes`, stale `studio.py`, `example_usage.py`, old `Makefile`
+- Deduplicated shared logic across TTS backends into `backends/base.py`
+- Improved startup logging with version, platform, data directory, and database stats
+- Fixed startup database session leak — sessions now rollback and close in `finally` block
+- Isolated shutdown unload calls so one backend failure doesn't block the others
+- Handled null duration in `story_items` migration
+- Reject model migration when target is a subdirectory of source cache
+
+### Documentation Rewrite ([#288](https://github.com/jamiepine/voicebox/pull/288))
+- Migrated docs site from Mintlify to Fumadocs (Next.js-based)
+- Rewrote introduction and root page with content from README
+- Added "Edit on GitHub" links and last-updated timestamps on all pages
+- Generated OpenAPI spec and auto-generated API reference pages
+- Removed stale planning docs (`CUDA_BACKEND_SWAP`, `EXTERNAL_PROVIDERS`, `MLX_AUDIO`, `TTS_PROVIDER_ARCHITECTURE`, etc.)
+- Sidebar groups now expand by default; root redirects to `/docs`
+- Added OG image metadata and `/og` preview page
+
+### UI & Frontend
+- Added model loading status indicator and effects preset dropdown ([3187344](https://github.com/jamiepine/voicebox/commit/3187344))
+- Fixed take-label race condition during regeneration
+- Added accessible focus styling to select component
+- Softened select focus indicator opacity
+- Addressed 4 critical and 12 major issues from CodeRabbit review
+
+### Bug Fixes ([#295](https://github.com/jamiepine/voicebox/pull/295))
+- Fixed sample uploads crashing the server — audio decoding now runs in a thread pool instead of blocking the async event loop ([#278](https://github.com/jamiepine/voicebox/issues/278))
+- Fixed generation list not updating when a generation completes — switched to `refetchQueries` for reliable cache busting, added SSE error fallback, and page reset on completion ([#231](https://github.com/jamiepine/voicebox/issues/231))
+- Fixed error toasts showing `[object Object]` instead of the actual error message ([#290](https://github.com/jamiepine/voicebox/issues/290))
+- Added Whisper model selection (`base`, `small`, `medium`, `large`, `turbo`) and expanded language support to the `/transcribe` endpoint ([#233](https://github.com/jamiepine/voicebox/issues/233))
+- Upgraded CUDA backend build from cu121 to cu126 for RTX 50-series (Blackwell) GPU support ([#289](https://github.com/jamiepine/voicebox/issues/289))
+- Handled client disconnects in SSE and streaming endpoints to suppress `[Errno 32] Broken Pipe` errors ([#248](https://github.com/jamiepine/voicebox/issues/248))
+- Fixed Docker build failure from pip hash mismatch on Qwen3-TTS dependencies ([#286](https://github.com/jamiepine/voicebox/issues/286))
+- Added 50 MB upload size limit with chunked reads to prevent unbounded memory allocation on sample uploads
+- Eliminated redundant double audio decode in sample processing pipeline
+
+### Platform Fixes
+- Replaced `netstat` with `TcpStream` + PowerShell for Windows port detection ([#277](https://github.com/jamiepine/voicebox/pull/277))
+- Fixed Docker frontend build and cleaned up Docker docs
+- Fixed macOS download links to use `.dmg` instead of `.app.tar.gz`
+- Added dynamic download redirect routes to landing site
+
+### Release Tooling
+- Added `draft-release-notes` and `release-bump` agent skills
+- Wired CI release workflow to extract notes from `CHANGELOG.md` for GitHub Releases
+- Backfilled changelog with all historical releases
+
+## [0.2.3] - 2026-03-15
+
+The "it works in dev but not in prod" release. This version fixes a series of PyInstaller bundling issues that prevented model downloading, loading, generation, and progress tracking from working in production builds.
+
+### Model Downloads Now Actually Work
+
+The v0.2.1/v0.2.2 builds could not download or load models that weren't already cached from a dev install. This release fixes the entire chain:
+
+- **Chatterbox, Chatterbox Turbo, and LuxTTS** all download, load, and generate correctly in bundled builds
+- **Real-time download progress** — byte-level progress bars now work in production. The root cause: `huggingface_hub` silently disables tqdm progress bars based on logger level, which prevented our progress tracker from receiving byte updates. We now force-enable the internal counter regardless.
+- **Fixed Python 3.12.0 `code.replace()` bug** — the macOS build was on Python 3.12.0, which has a [known CPython bug](https://github.com/pyinstaller/pyinstaller/issues/7992) that corrupts bytecode when PyInstaller rewrites code objects. This caused `NameError: name 'obj' is not defined` crashes during scipy/torch imports. Upgraded to Python 3.12.13.
+
+### PyInstaller Fixes
+
+- Collect all `inflect` files — `typeguard`'s `@typechecked` decorator calls `inspect.getsource()` at import time, which needs `.py` source files, not just bytecode. Fixes LuxTTS "could not get source code" error.
+- Collect all `perth` files — bundles the pretrained watermark model (`hparams.yaml`, `.pth.tar`) needed by Chatterbox at runtime
+- Collect all `piper_phonemize` files — bundles `espeak-ng-data/` (phoneme tables, language dicts) needed by LuxTTS for text-to-phoneme conversion
+- Set `ESPEAK_DATA_PATH` in frozen builds so the espeak-ng C library finds the bundled data instead of looking at `/usr/share/espeak-ng-data/`
+- Collect all `linacodec` files — fixes `inspect.getsource` error in Vocos codec
+- Collect all `zipvoice` files — fixes source code lookup in LuxTTS voice cloning
+- Copy metadata for `requests`, `transformers`, `huggingface-hub`, `tokenizers`, `safetensors`, `tqdm` — fixes `importlib.metadata` lookups in frozen binary
+- Add hidden imports for `chatterbox`, `chatterbox_turbo`, `luxtts`, `zipvoice` backends
+- Add `multiprocessing.freeze_support()` to fix resource_tracker subprocess crash in frozen binary
+- `--noconsole` now only applied on Windows — macOS/Linux need stdout/stderr for Tauri sidecar log capture
+- Hardened `sys.stdout`/`sys.stderr` devnull redirect to test writability, not just `None` check
+
+### Updater
+
+- Fixed updater artifact generation with `v1Compatible` for `tauri-action` signature files
+- Updated `tauri-action` to v0.6 to fix updater JSON and `.sig` generation
+
+### Other Fixes
+
+- Full traceback logging on all backend model loading errors (was just `str(e)` before)
+
+## [0.2.2] - 2026-03-15
+
+- Fix Chatterbox model support in bundled builds
+- Fix LuxTTS/ZipVoice support in bundled builds
+- Auto-update CUDA binary when app version changes
+- CUDA download progress bar
+- Fix server process staying alive on macOS (SIGHUP handling, watchdog grace period)
+- Hide console window when running CUDA binary on Windows
+
+## [0.2.1] - 2026-03-15
+
+Voicebox v0.1.x was a single-engine voice cloning app built around Qwen3-TTS. v0.2.0 is a ground-up rethink: four TTS engines, 23 languages, paralinguistic emotion controls, a post-processing effects pipeline, unlimited generation length, an async generation queue, and support for every major GPU vendor. Plus Docker.
+
+### New TTS Engines
+
+#### Multi-Engine Architecture
+
+Voicebox now runs **four independent TTS engines** behind a thread-safe per-engine backend registry. Switch engines per-generation from a single dropdown — no restart required.
+
+| Engine                      | Languages | Size    | Key Strengths                                 |
+| --------------------------- | --------- | ------- | --------------------------------------------- |
+| **Qwen3-TTS 1.7B**          | 10        | ~3.5 GB | Highest quality, delivery instructions        |
+| **Qwen3-TTS 0.6B**          | 10        | ~1.2 GB | Lighter, faster variant                       |
+| **LuxTTS**                  | English   | ~300 MB | CPU-friendly, 48 kHz output, 150x realtime    |
+| **Chatterbox Multilingual** | 23        | ~3.2 GB | Broadest language coverage, zero-shot cloning |
+| **Chatterbox Turbo**        | English   | ~1.5 GB | 350M params, low latency, paralinguistic tags |
+
+#### Chatterbox Multilingual — 23 Languages ([#257](https://github.com/jamiepine/voicebox/pull/257))
+
+Zero-shot voice cloning in Arabic, Chinese, Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Hindi, Italian, Japanese, Korean, Malay, Norwegian, Polish, Portuguese, Russian, Spanish, Swahili, Swedish, and Turkish.
+
+#### LuxTTS — Lightweight English TTS ([#254](https://github.com/jamiepine/voicebox/pull/254))
+
+A fast, CPU-friendly English engine. ~300 MB download, 48 kHz output, runs at 150x realtime on CPU.
+
+#### Chatterbox Turbo — Expressive English ([#258](https://github.com/jamiepine/voicebox/pull/258))
+
+A fast 350M-parameter English model with inline paralinguistic tags.
+
+#### Paralinguistic Tags Autocomplete ([#265](https://github.com/jamiepine/voicebox/pull/265))
+
+Type `/` in the text input with Chatterbox Turbo selected to open an autocomplete for **9 expressive tags**: `[laugh]` `[chuckle]` `[gasp]` `[cough]` `[sigh]` `[groan]` `[sniff]` `[shush]` `[clear throat]`
+
+### Generation
+
+#### Unlimited Generation Length — Auto-Chunking ([#266](https://github.com/jamiepine/voicebox/pull/266))
+
+Long text is now automatically split at sentence boundaries, generated per-chunk, and crossfaded back together. Engine-agnostic.
+
+- Auto-chunking limit slider — 100–5,000 chars (default 800)
+- Crossfade slider — 0–200ms (default 50ms)
+- Max text length raised to 50,000 characters
+- Smart splitting respects abbreviations, CJK punctuation, and `[tags]`
+
+#### Asynchronous Generation Queue ([#269](https://github.com/jamiepine/voicebox/pull/269))
+
+Generation is now fully non-blocking. Serial execution queue prevents GPU contention. Real-time SSE status streaming.
+
+#### Generation Versions
+
+Every generation now supports multiple versions with provenance tracking — original, effects versions, takes, source tracking, version pinning in stories, and favorites.
+
+### Post-Processing Effects ([#271](https://github.com/jamiepine/voicebox/pull/271))
+
+A full audio effects system powered by Spotify's `pedalboard` library: Pitch Shift, Reverb, Delay, Chorus/Flanger, Compressor, Gain, High-Pass Filter, Low-Pass Filter. 4 built-in presets, custom presets, per-profile default effects, and live preview.
 
 ### Platform Support
 
-- macOS (Apple Silicon and Intel)
-- Windows
-- Linux (AppImage)
+- **Windows Support** ([#272](https://github.com/jamiepine/voicebox/pull/272)) — Full Windows support with CUDA GPU detection
+- **Linux** ([#262](https://github.com/jamiepine/voicebox/pull/262)) — AMD ROCm, NVIDIA GBM fix, WebKitGTK mic access (build from source)
+- **NVIDIA CUDA Backend Swap** ([#252](https://github.com/jamiepine/voicebox/pull/252)) — Download and swap in CUDA backend from within the app
+- **Intel Arc (XPU) and DirectML** — PyTorch backend supports Intel Arc and DirectML
+- **Docker + Web Deployment** ([#161](https://github.com/jamiepine/voicebox/pull/161)) — 3-stage build, non-root runtime, health checks
+- **Whisper Turbo** — Added `openai/whisper-large-v3-turbo` as a transcription model option
 
----
+### Model Management ([#268](https://github.com/jamiepine/voicebox/pull/268))
 
-## [Unreleased]
+Per-model unload, custom models directory, model folder migration, download cancel/clear UI ([#238](https://github.com/jamiepine/voicebox/pull/238)), restructured settings UI.
 
-### Fixed
-- Audio export failing when Tauri save dialog returns object instead of string path
-- OpenAPI client generator script now documents the local backend port and avoids an unused loop variable warning
+### Security & Reliability
 
-### Added
-- **Makefile** - Comprehensive development workflow automation with commands for setup, development, building, testing, and code quality checks
-  - Includes Python version detection and compatibility warnings
-  - Self-documenting help system with `make help`
-  - Colored output for better readability
-  - Supports parallel development server execution
+- CORS hardening ([#88](https://github.com/jamiepine/voicebox/pull/88))
+- Network access toggle ([#133](https://github.com/jamiepine/voicebox/pull/133))
+- Offline crash fix ([#152](https://github.com/jamiepine/voicebox/pull/152))
+- Atomic audio saves ([#263](https://github.com/jamiepine/voicebox/pull/263))
+- Filesystem health endpoint
+- Chatterbox float64 dtype fix ([#264](https://github.com/jamiepine/voicebox/pull/264))
 
-### Changed
-- **README** - Added Makefile reference and updated Quick Start with Makefile-based setup instructions alongside manual setup
+### Accessibility ([#243](https://github.com/jamiepine/voicebox/pull/243))
 
----
+Screen reader support, keyboard navigation, state-aware `aria-label` attributes on all interactive controls.
 
-## [Unreleased - Planned]
+### UI Polish
 
-### Planned
-- Real-time streaming synthesis
-- Conversation mode with multiple speakers
-- Voice effects (pitch shift, reverb, M3GAN-style)
-- Timeline-based audio editor
-- Additional voice models (XTTS, Bark)
-- Voice design from text descriptions
-- Project system for saving sessions
-- Plugin architecture
+- Redesigned landing page ([#274](https://github.com/jamiepine/voicebox/pull/274))
+- Voices tab overhaul with inline inspector
+- Responsive layout improvements
+- Duplicate profile name validation ([#175](https://github.com/jamiepine/voicebox/pull/175))
 
----
+### Community Contributors
 
+[@haosenwang1018](https://github.com/haosenwang1018), [@Balneario-de-Cofrentes](https://github.com/Balneario-de-Cofrentes), [@ageofalgo](https://github.com/ageofalgo), [@mikeswann](https://github.com/mikeswann), [@rayl15](https://github.com/rayl15), [@mpecanha](https://github.com/mpecanha), [@ways2read](https://github.com/ways2read), [@ieguiguren](https://github.com/ieguiguren), [@Vaibhavee89](https://github.com/Vaibhavee89), [@pandego](https://github.com/pandego), [@luminest-llc](https://github.com/luminest-llc)
+
+## [0.1.13] - 2026-02-23
+
+### Stability and reliability
+
+- [#95](https://github.com/jamiepine/voicebox/pull/95) Fix: selecting 0.6B model still downloads and uses 1.7B
+- [#93](https://github.com/jamiepine/voicebox/pull/93) fix(mlx): bundle native libs and broaden error handling for Apple Silicon
+- [#79](https://github.com/jamiepine/voicebox/pull/79) fix: handle non-ASCII filenames in Content-Disposition headers
+- [#78](https://github.com/jamiepine/voicebox/pull/78) fix: guard getUserMedia call against undefined mediaDevices in non-secure contexts
+- [#77](https://github.com/jamiepine/voicebox/pull/77) fix: await for confirmation before deleting voices and channels
+- [#128](https://github.com/jamiepine/voicebox/pull/128) fix: resolve multiple issues (#96, #119, #111, #108, #121, #125, #127)
+- [#40](https://github.com/jamiepine/voicebox/pull/40) Fix: audio export path resolution
+
+### Build and packaging
+
+- [#122](https://github.com/jamiepine/voicebox/pull/122) fix(web): add @tailwindcss/vite plugin to web config
+- [#126](https://github.com/jamiepine/voicebox/pull/126) Create requirements.txt
+
+### UX and docs
+
+- [#44](https://github.com/jamiepine/voicebox/pull/44) Enhances floating generate box UX
+- [#57](https://github.com/jamiepine/voicebox/pull/57) chore: updates repo URL in README
+- [#146](https://github.com/jamiepine/voicebox/pull/146) Add Spacebot banner to landing page
+- [#1](https://github.com/jamiepine/voicebox/pull/1) Improvements
+
+## [0.1.12] - 2026-01-31
+
+### Model Download UX Overhaul
+
+- Real-time download progress tracking with accurate percentage and speed info
+- No more downloading notifications during generation even when its not downloading
+- Better error handling and status reporting throughout the download process
+
+### Other Improvements
+
+- Enhanced health check endpoint with GPU type information
+- Improved model caching verification
+- More reliable SSE progress updates
+- Actual update notifications — no need to manually check in settings anymore
+
+## [0.1.11] - 2026-01-30
+
+- Fixed transcriptions on MLX
+- Fixed model download progress (finally)
+
+## [0.1.10] - 2026-01-30
+
+### Faster generation on Apple Silicon
+
+Massive speed gains, from around 20s per generation to 2-3s. Added native MLX backend support for Apple Silicon, providing significantly faster TTS and STT generation on M-series macOS machines.
+
+- **MLX Backend** — New backend implementation optimized for Apple Silicon using MLX framework
+- **Dynamic Backend Selection** — Automatically detects platform and selects between MLX (macOS) and PyTorch (other platforms)
+- Refactored TTS and STT logic into modular backend implementations
+- Updated build process to include MLX-specific dependencies for macOS builds
+
+## [0.1.9] - 2026-01-30
+
+### Improved voice profile creation flow
+
+- Voice create drafts: No longer lose work if you close the modal
+- Fixed whisper only transcribing English or Chinese, now has support for all languages
+
+### Improved Stories editor
+
+- Added spacebar for play/pause
+- Timeline now auto-scrolls to follow playhead during playback
+- Fixed misalignment of the items with mouse when picking up
+- Fixed hitbox for selecting an item
+- Fixed playhead jumping forward when pressing play
+
+### Generation box improvements
+
+- Instruct mode no longer wipes prompt text
+- Improved UI cleanliness
+
+### Misc
+
+- Fixed "Model downloading" toast during generation when model is already downloaded
+
+## [0.1.8] - 2026-01-29
+
+### Model Download Timeout Issues
+
+Fixed critical issue where model downloads would fail with "Failed to fetch" errors on Windows. Refactored download endpoints to return immediately and continue downloads in background.
+
+### Cross-Platform Cache Path Issues
+
+Fixed hardcoded `~/.cache/huggingface/hub` paths that don't work on Windows. All cache paths now use `hf_constants.HF_HUB_CACHE` for proper cross-platform support.
+
+### Windows Process Management
+
+- Added `/shutdown` endpoint for graceful server shutdown on Windows
+- Added `gpu_type` field to health check response
+
+## [0.1.7] - 2026-01-29
+
+- Trim and split audio clips in Story Editor
+- Auto-activation of stories in Story Editor with visible playhead
+- Conditional auto-play support in AudioPlayer for better user control
+- Refactored audio loading across HistoryTable, SampleList, and generation forms
+- Audio now only auto-plays when explicitly intended, preventing unexpected playback
+
+## [0.1.6] - 2026-01-29
+
+### Introducing Stories
+
+A full voice editor for composing podcasts and generated conversations.
+
+- **Stories Editor** — Create multi-voice narratives, podcasts, or conversations with a timeline-based editor
+- Compose tracks with different voices
+- Edit and arrange audio segments inline
+- Build generated conversations with multiple participants
+- **Improved Voice Generation UI** — Auto-resizing input, default voice selection, better layout
+- **Track Editor Integration** — Inline track editing within story items
+
+## [0.1.5] - 2026-01-28
+
+Fixed recording length limit at 0:29 to auto stop instead of passing the limit and getting an error, which would cause users to lose their recording.
+
+## [0.1.4] - 2026-01-28
+
+- Audio channel management system
+- Native audio playback handling in AudioPlayer component
+- Refactored ConnectionForm and Checkbox components
+- Improved layout consistency and responsiveness
+- Added safe area constants for better responsive design
+
+## [0.1.3] - 2026-01-27
+
+- Improved the generate textbox
+- Maybe fixed Windows autoupdate restarting entire computer
+
+## [0.1.2] - 2026-01-27
+
+### Audio Capture & Format Conversion
+
+- Added audio format conversion util
+- Enhanced system audio capture on macOS and Windows
+- Improved audio recording hooks
+- Added audio input entitlement for macOS
+- Added audio capture tests
+
+### Update System
+
+- Enhanced auto-updater functionality and update status display
+
+## [0.1.1] - 2026-01-27
+
+### Platform Support
+
+- **macOS Audio Capture** — Native audio capture support for sample creation
+- **Windows Audio Capture** — WASAPI implementation with improved thread safety
+- **Linux Support** — Temporarily removed builds due to runner disk space constraints
+
+### Audio Features
+
+- Play/pause for audio samples across all components
+- Three new sample components: Recording, System capture, Upload with drag-and-drop
+- Audio validation, error handling, and consistent cleanup
+
+### Voice Profile Management
+
+- Profile import with file size validation (100MB limit)
+- Enhanced profile form with new audio sample components
+- Drag-and-drop support for audio file uploads
+
+### Server Management
+
+- Changed default URL from `localhost:8000` to `127.0.0.1:17493`
+- Server reuse logic, "keep server running" preference, orphaned process handling
+
+### Build & Release
+
+- Added `.bumpversion.cfg` for automated version management
+- Enhanced icon generation script for multi-size Windows icons
+
+### Bug Fixes
+
+- Fixed date formatting for timezone-less date strings
+- Fixed getLatestRelease file filtering
+- Improved audio duration metadata on Windows
+
+## [0.1.0] - 2026-01-27
+
+The first public release of Voicebox — an open-source voice synthesis studio powered by Qwen3-TTS.
+
+### Voice Cloning with Qwen3-TTS
+
+- Automatic model download from HuggingFace
+- Multiple model sizes (1.7B and 0.6B)
+- Voice prompt caching for instant regeneration
+- English and Chinese support
+
+### Voice Profile Management
+
+- Create profiles from audio files or record directly in the app
+- Multiple samples per profile for higher quality cloning
+- Import/Export profiles
+- Automatic transcription via Whisper
+
+### Speech Generation
+
+- Simple text-to-speech with profile selection
+- Seed control for reproducible generations
+- Long-form support up to 5,000 characters
+
+### Generation History
+
+- Full history with metadata
+- Search by text content
+- Inline playback and download
+
+### Flexible Deployment
+
+- Local mode with bundled backend
+- Remote mode for GPU servers on your network
+- One-click server setup
+
+### Desktop Experience
+
+- Built with Tauri v2 (Rust) — native performance, not Electron
+- Cross-platform: macOS and Windows
+- No Python installation required
+
+### Tech Stack
+
+Tauri v2, React, TypeScript, Tailwind CSS, FastAPI, Qwen3-TTS, Whisper, SQLite
+
+[Unreleased]: https://github.com/jamiepine/voicebox/compare/v0.4.4...HEAD
+[0.4.4]: https://github.com/jamiepine/voicebox/compare/v0.4.3...v0.4.4
+[0.4.3]: https://github.com/jamiepine/voicebox/compare/v0.4.2...v0.4.3
+[0.4.2]: https://github.com/jamiepine/voicebox/compare/v0.4.1...v0.4.2
+[0.4.1]: https://github.com/jamiepine/voicebox/compare/v0.4.0...v0.4.1
+[0.4.0]: https://github.com/jamiepine/voicebox/compare/v0.3.0...v0.4.0
+[0.3.0]: https://github.com/jamiepine/voicebox/compare/v0.2.3...v0.3.0
+[0.2.3]: https://github.com/jamiepine/voicebox/compare/v0.2.2...v0.2.3
+[0.2.2]: https://github.com/jamiepine/voicebox/compare/v0.2.1...v0.2.2
+[0.2.1]: https://github.com/jamiepine/voicebox/compare/v0.1.13...v0.2.1
+[0.1.13]: https://github.com/jamiepine/voicebox/compare/v0.1.12...v0.1.13
+[0.1.12]: https://github.com/jamiepine/voicebox/compare/v0.1.11...v0.1.12
+[0.1.11]: https://github.com/jamiepine/voicebox/compare/v0.1.10...v0.1.11
+[0.1.10]: https://github.com/jamiepine/voicebox/compare/v0.1.9...v0.1.10
+[0.1.9]: https://github.com/jamiepine/voicebox/compare/v0.1.8...v0.1.9
+[0.1.8]: https://github.com/jamiepine/voicebox/compare/v0.1.7...v0.1.8
+[0.1.7]: https://github.com/jamiepine/voicebox/compare/v0.1.6...v0.1.7
+[0.1.6]: https://github.com/jamiepine/voicebox/compare/v0.1.5...v0.1.6
+[0.1.5]: https://github.com/jamiepine/voicebox/compare/v0.1.4...v0.1.5
+[0.1.4]: https://github.com/jamiepine/voicebox/compare/v0.1.3...v0.1.4
+[0.1.3]: https://github.com/jamiepine/voicebox/compare/v0.1.2...v0.1.3
+[0.1.2]: https://github.com/jamiepine/voicebox/compare/v0.1.1...v0.1.2
+[0.1.1]: https://github.com/jamiepine/voicebox/compare/v0.1.0...v0.1.1
 [0.1.0]: https://github.com/jamiepine/voicebox/releases/tag/v0.1.0

CONTRIBUTING.md

@@ -260,7 +260,7 @@ voicebox/
 
 ### ✨ New Features
 
-- Check the roadmap in README.md
+- Check the roadmap in README.md and the engineering status in [`docs/PROJECT_STATUS.md`](docs/PROJECT_STATUS.md) before proposing work — it lists prioritized tasks (Tier 1 → 3), known architectural bottlenecks, and candidate TTS engines already under evaluation (including why some have been backlogged)
 - Discuss major features in an issue first
 - Keep features focused and well-scoped
 
@@ -359,7 +359,7 @@ Releases are managed by maintainers:
 
 ## Troubleshooting
 
-See [docs/TROUBLESHOOTING.md](docs/TROUBLESHOOTING.md) for common issues and solutions.
+See [docs/content/docs/overview/troubleshooting.mdx](docs/content/docs/overview/troubleshooting.mdx) for common issues and solutions.
 
 **Quick fixes:**
 
@@ -372,12 +372,13 @@ See [docs/TROUBLESHOOTING.md](docs/TROUBLESHOOTING.md) for common issues and sol
 - Open an issue for bugs or feature requests
 - Check existing issues and discussions
 - Review the codebase to understand patterns
-- See [docs/TROUBLESHOOTING.md](docs/TROUBLESHOOTING.md) for common issues
+- See [docs/content/docs/overview/troubleshooting.mdx](docs/content/docs/overview/troubleshooting.mdx) for common issues
 
 ## Additional Resources
 
 - [README.md](README.md) - Project overview
 - [backend/README.md](backend/README.md) - API documentation
+- [docs/PROJECT_STATUS.md](docs/PROJECT_STATUS.md) - Living engineering roadmap: architecture, shipped vs in-flight work, prioritized open issues, candidate TTS engines under evaluation, architectural bottlenecks. Keep this updated when you ship significant features, close or backlog a model integration, or identify new bottlenecks.
 - [docs/AUTOUPDATER_QUICKSTART.md](docs/AUTOUPDATER_QUICKSTART.md) - Auto-updater setup
 - [SECURITY.md](SECURITY.md) - Security policy
 - [CHANGELOG.md](CHANGELOG.md) - Version history

Dockerfile

@@ -9,7 +9,7 @@ FROM oven/bun:1 AS frontend
 WORKDIR /build
 
 # Copy workspace config and frontend source
-COPY package.json bun.lock ./
+COPY package.json bun.lock CHANGELOG.md ./
 COPY app/ ./app/
 COPY web/ ./web/
 
@@ -31,8 +31,12 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
     && rm -rf /var/lib/apt/lists/*
 
+RUN pip install --no-cache-dir --upgrade pip
+
 COPY backend/requirements.txt .
 RUN pip install --no-cache-dir --prefix=/install -r requirements.txt
+RUN pip install --no-cache-dir --prefix=/install --no-deps chatterbox-tts
+RUN pip install --no-cache-dir --prefix=/install --no-deps hume-tada
 RUN pip install --no-cache-dir --prefix=/install \
     git+https://github.com/QwenLM/Qwen3-TTS.git
 

Makefile

@@ -1,250 +0,0 @@
-# Voicebox Makefile
-# Unix-only (macOS/Linux). Windows users should use WSL.
-
-SHELL := /bin/bash
-.DEFAULT_GOAL := help
-
-# Directories
-BACKEND_DIR := backend
-TAURI_DIR := tauri
-WEB_DIR := web
-APP_DIR := app
-
-# Python (prefer 3.12, fallback to 3.13, then python3)
-PYTHON := $(shell command -v python3.12 2>/dev/null || command -v python3.13 2>/dev/null || echo python3)
-VENV := $(CURDIR)/$(BACKEND_DIR)/venv
-VENV_BIN := $(VENV)/bin
-PIP := $(VENV_BIN)/pip
-PYTHON_VENV := $(VENV_BIN)/python
-
-# Colors for output
-BLUE := \033[0;34m
-GREEN := \033[0;32m
-YELLOW := \033[0;33m
-NC := \033[0m # No Color
-
-.PHONY: help
-help: ## Show this help message
-	@echo -e "$(BLUE)Voicebox$(NC) - Development Commands"
-	@echo ""
-	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | \
-		awk 'BEGIN {FS = ":.*?## "}; {printf "  $(GREEN)%-20s$(NC) %s\n", $$1, $$2}'
-
-# =============================================================================
-# SETUP
-# =============================================================================
-
-.PHONY: setup setup-js setup-python setup-rust
-
-setup: setup-js setup-python ## Full project setup (all dependencies)
-	@echo -e "$(GREEN)✓ Setup complete!$(NC)"
-	@echo -e "  Run $(YELLOW)make dev$(NC) to start development servers"
-
-setup-js: ## Install JavaScript dependencies (bun)
-	@echo -e "$(BLUE)Installing JavaScript dependencies...$(NC)"
-	bun install
-
-setup-python: $(VENV)/bin/activate ## Set up Python virtual environment and dependencies
-	@echo -e "$(BLUE)Installing Python dependencies...$(NC)"
-	$(PIP) install --upgrade pip
-	$(PIP) install -r $(BACKEND_DIR)/requirements.txt
-	$(PIP) install --no-deps chatterbox-tts
-	@if [ "$$(uname -m)" = "arm64" ] && [ "$$(uname)" = "Darwin" ]; then \
-		echo -e "$(BLUE)Detected Apple Silicon - installing MLX dependencies...$(NC)"; \
-		$(PIP) install -r $(BACKEND_DIR)/requirements-mlx.txt; \
-		echo -e "$(GREEN)✓ MLX backend enabled (native Metal acceleration)$(NC)"; \
-	fi
-	$(PIP) install git+https://github.com/QwenLM/Qwen3-TTS.git
-	@echo -e "$(GREEN)✓ Python environment ready$(NC)"
-
-$(VENV)/bin/activate:
-	@echo -e "$(BLUE)Creating Python virtual environment...$(NC)"
-	@PY_MINOR=$$($(PYTHON) -c "import sys; print(sys.version_info[1])"); \
-	if [ "$$PY_MINOR" -gt 13 ]; then \
-		echo -e "$(YELLOW)Warning: Python 3.$$PY_MINOR detected. ML packages may not be compatible.$(NC)"; \
-		echo -e "$(YELLOW)Recommended: Use Python 3.12 or 3.13 (brew install [email protected])$(NC)"; \
-	fi
-	$(PYTHON) -m venv $(VENV)
-
-setup-rust: ## Install Rust toolchain (if not present)
-	@command -v rustc >/dev/null 2>&1 || curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
-
-# =============================================================================
-# DEVELOPMENT
-# =============================================================================
-
-.PHONY: dev dev-backend dev-frontend dev-web kill-dev
-
-dev: ## Start backend + desktop app (parallel)
-	@echo -e "$(BLUE)Starting development servers...$(NC)"
-	@echo -e "$(YELLOW)Note: If Tauri fails, run 'make build-server' first or use separate terminals$(NC)"
-	@trap 'kill 0' EXIT; \
-		$(MAKE) dev-backend & \
-		sleep 2 && if [ "$$(uname)" = "Linux" ] && lspci 2>/dev/null | grep -qi nvidia; then \
-			WEBKIT_DISABLE_DMABUF_RENDERER=1 $(MAKE) dev-frontend; \
-		else \
-			$(MAKE) dev-frontend; \
-		fi & \
-		wait
-
-dev-backend: ## Start FastAPI backend server
-	@echo -e "$(BLUE)Starting backend server on http://localhost:17493$(NC)"
-	$(VENV_BIN)/uvicorn backend.main:app --reload --port 17493
-
-dev-frontend: ## Start Tauri desktop app
-	@echo -e "$(BLUE)Starting Tauri desktop app...$(NC)"
-	bun run dev
-
-dev-web: ## Start backend + web app (parallel)
-	@echo -e "$(BLUE)Starting web development servers...$(NC)"
-	@trap 'kill 0' EXIT; \
-		$(MAKE) dev-backend & \
-		sleep 2 && cd $(WEB_DIR) && bun run dev & \
-		wait
-
-kill-dev: ## Kill all development processes
-	@echo -e "$(YELLOW)Killing development processes...$(NC)"
-	-pkill -f "uvicorn main:app" 2>/dev/null || true
-	-pkill -f "vite" 2>/dev/null || true
-	@echo -e "$(GREEN)✓ Processes killed$(NC)"
-
-# =============================================================================
-# BUILD
-# =============================================================================
-
-.PHONY: build build-server build-tauri build-web
-
-build: build-server build-tauri ## Build everything (server binary + desktop app)
-	@echo -e "$(GREEN)✓ Build complete!$(NC)"
-
-build-server: ## Build Python server binary
-	@echo -e "$(BLUE)Building server binary...$(NC)"
-	PATH="$(VENV_BIN):$$PATH" ./scripts/build-server.sh
-
-build-tauri: ## Build Tauri desktop app
-	@echo -e "$(BLUE)Building Tauri desktop app...$(NC)"
-	cd $(TAURI_DIR) && bun run tauri build
-
-build-web: ## Build web app
-	@echo -e "$(BLUE)Building web app...$(NC)"
-	cd $(WEB_DIR) && bun run build
-	@echo -e "$(GREEN)✓ Web build output in $(WEB_DIR)/dist/$(NC)"
-
-# =============================================================================
-# DATABASE & API
-# =============================================================================
-
-.PHONY: db-init db-reset generate-api
-
-db-init: $(VENV)/bin/activate ## Initialize SQLite database
-	@echo -e "$(BLUE)Initializing database...$(NC)"
-	cd $(BACKEND_DIR) && $(PYTHON_VENV) -c "from database import init_db; init_db()"
-	@echo -e "$(GREEN)✓ Database created at $(BACKEND_DIR)/data/voicebox.db$(NC)"
-
-db-reset: ## Reset database (delete and reinitialize)
-	@echo -e "$(YELLOW)Resetting database...$(NC)"
-	rm -f $(BACKEND_DIR)/data/voicebox.db
-	$(MAKE) db-init
-
-generate-api: ## Generate TypeScript API client from OpenAPI schema
-	@echo -e "$(BLUE)Generating API client...$(NC)"
-	@echo -e "$(YELLOW)Note: Backend must be running (make dev-backend)$(NC)"
-	./scripts/generate-api.sh
-	@echo -e "$(GREEN)✓ API client generated in $(APP_DIR)/src/lib/api/$(NC)"
-
-# =============================================================================
-# CODE QUALITY
-# =============================================================================
-
-.PHONY: lint format typecheck check
-
-lint: ## Run linter (Biome)
-	@echo -e "$(BLUE)Linting...$(NC)"
-	bun run lint
-
-format: ## Format code (Biome)
-	@echo -e "$(BLUE)Formatting...$(NC)"
-	bun run format
-
-typecheck: ## Run TypeScript type checking
-	@echo -e "$(BLUE)Type checking...$(NC)"
-	bun run tsc --noEmit
-
-check: ## Run all checks (Biome lint + format + type check)
-	@echo -e "$(BLUE)Running all checks...$(NC)"
-	bun run check
-	@echo -e "$(GREEN)✓ All checks passed$(NC)"
-
-# =============================================================================
-# TESTING
-# =============================================================================
-
-.PHONY: test test-backend test-frontend
-
-test: test-backend test-frontend ## Run all tests
-	@echo -e "$(GREEN)✓ All tests passed$(NC)"
-
-test-backend: ## Run Python backend tests (requires pytest)
-	@echo -e "$(BLUE)Running backend tests...$(NC)"
-	@if [ -f "$(VENV_BIN)/pytest" ]; then \
-		cd $(BACKEND_DIR) && $(VENV_BIN)/pytest -v; \
-	else \
-		echo -e "$(YELLOW)pytest not installed. Run: $(PIP) install pytest$(NC)"; \
-		exit 1; \
-	fi
-
-test-frontend: ## Run frontend tests (requires test script in package.json)
-	@echo -e "$(BLUE)Running frontend tests...$(NC)"
-	@if bun run test --help >/dev/null 2>&1; then \
-		bun run test; \
-	else \
-		echo -e "$(YELLOW)No test script configured$(NC)"; \
-		exit 1; \
-	fi
-
-# =============================================================================
-# LOGS & DEBUGGING
-# =============================================================================
-
-.PHONY: logs docs
-
-logs: ## Tail backend logs
-	@echo -e "$(BLUE)Tailing logs (Ctrl+C to stop)...$(NC)"
-	tail -f $(BACKEND_DIR)/logs/*.log 2>/dev/null || echo "No log files found"
-
-docs: ## Open API documentation (backend must be running)
-	@echo -e "$(BLUE)Opening API docs...$(NC)"
-	open http://localhost:17493/docs 2>/dev/null || xdg-open http://localhost:17493/docs
-
-# =============================================================================
-# CLEAN
-# =============================================================================
-
-.PHONY: clean clean-python clean-build clean-all
-
-clean: ## Clean build artifacts
-	@echo -e "$(BLUE)Cleaning build artifacts...$(NC)"
-	rm -rf $(TAURI_DIR)/src-tauri/target/release
-	rm -rf $(WEB_DIR)/dist
-	rm -rf $(APP_DIR)/dist
-	@echo -e "$(GREEN)✓ Build artifacts cleaned$(NC)"
-
-clean-python: ## Clean Python cache and virtual environment
-	@echo -e "$(BLUE)Cleaning Python files...$(NC)"
-	rm -rf $(VENV)
-	find $(BACKEND_DIR) -type d -name "__pycache__" -exec rm -rf {} + 2>/dev/null || true
-	find $(BACKEND_DIR) -type f -name "*.pyc" -delete 2>/dev/null || true
-	@echo -e "$(GREEN)✓ Python environment cleaned$(NC)"
-
-clean-build: ## Clean Rust/Tauri build cache
-	@echo -e "$(BLUE)Cleaning Rust build cache...$(NC)"
-	cd $(TAURI_DIR)/src-tauri && cargo clean
-	@echo -e "$(GREEN)✓ Rust cache cleaned$(NC)"
-
-clean-all: clean clean-python clean-build ## Nuclear clean (everything)
-	@echo -e "$(BLUE)Cleaning node_modules...$(NC)"
-	rm -rf node_modules
-	rm -rf $(APP_DIR)/node_modules
-	rm -rf $(TAURI_DIR)/node_modules
-	rm -rf $(WEB_DIR)/node_modules
-	@echo -e "$(GREEN)✓ Full clean complete$(NC)"

PATCH_NOTES.md

@@ -1,58 +0,0 @@
-# Voicebox Offline Mode Fix
-
-## Problem
-Voicebox crashes when generating speech if HuggingFace is unreachable, even when models are fully cached locally.
-
-**Root Cause:**
-- Voicebox downloads `mlx-community/Qwen3-TTS-12Hz-1.7B-Base-bf16` (MLX optimized version)
-- But `mlx_audio.tts.load()` tries to fetch `config.json` from original repo `Qwen/Qwen3-TTS-12Hz-1.7B-Base`
-- This network request fails → server crashes with `RemoteDisconnected`
-
-**Related Issues:**
-- Issue #150: "Internet connection required, even though models are downloaded?"
-- Issue #151: "API Stability Issues: Model Loading Hangs and Server Crashes"
-
-## Solution
-Two-part fix:
-
-### 1. Monkey-patch huggingface_hub (`backend/utils/hf_offline_patch.py`)
-- Intercepts cache lookup functions
-- Forces offline mode early (before mlx_audio imports)
-- Adds debug logging for cache hits/misses
-
-### 2. Symlink original repo to MLX version (`ensure_original_qwen_config_cached()`)
-- When original `Qwen/Qwen3-TTS-12Hz-1.7B-Base` cache doesn't exist
-- But MLX `mlx-community/Qwen3-TTS-12Hz-1.7B-Base-bf16` does exist
-- Creates a symlink so cache lookups succeed
-
-## Files Changed
-- `backend/backends/mlx_backend.py` - Added patch imports at top
-- `backend/utils/hf_offline_patch.py` - New patch module
-
-## Testing
-To test this fix:
-1. Build Voicebox from source: `make build`
-2. Disconnect from internet
-3. Try generating speech
-4. Should work without network requests
-
-## Build Instructions
-
-```bash
-# Install dependencies
-pip install -r requirements.txt
-
-# Build the app
-make build
-
-# Or build just the server
-make build-server
-```
-
-## Notes
-- The patch is applied automatically when `mlx_backend.py` is imported
-- Set `VOICEBOX_OFFLINE_PATCH=0` to disable the patch
-- The symlink approach works because the config.json is compatible between versions
-
----
-*Patch contributed by community*

README.md

@@ -6,7 +6,7 @@
 
 <p align="center">
   <strong>The open-source voice synthesis studio.</strong><br/>
-  Clone voices. Generate speech. Build voice-powered apps.<br/>
+  Clone voices. Generate speech. Apply effects. Build voice-powered apps.<br/>
   All running locally on your machine.
 </p>
 
@@ -23,14 +23,18 @@
   <a href="https://github.com/jamiepine/voicebox/blob/main/LICENSE">
     <img src="https://img.shields.io/github/license/jamiepine/voicebox?style=flat" alt="License" />
   </a>
+  <a href="https://deepwiki.com/jamiepine/voicebox">
+    <img src="https://img.shields.io/static/v1?label=Ask&message=DeepWiki&color=5B6EF7" alt="Ask DeepWiki" />
+  </a>
 </p>
 
 <p align="center">
   <a href="https://voicebox.sh">voicebox.sh</a> •
+  <a href="https://docs.voicebox.sh">Docs</a> •
   <a href="#download">Download</a> •
   <a href="#features">Features</a> •
   <a href="#api">API</a> •
-  <a href="#roadmap">Roadmap</a>
+  <a href="docs/content/docs/overview/troubleshooting.mdx">Troubleshooting</a>
 </p>
 
 <br/>
@@ -59,96 +63,158 @@
 
 ## What is Voicebox?
 
-Voicebox is a **local-first voice cloning studio** with DAW-like features for professional voice synthesis. Think of it as a **local, free and open-source alternative to ElevenLabs** — download models, clone voices, and generate speech entirely on your machine.
-
-Unlike cloud services that lock your voice data behind subscriptions, Voicebox gives you:
+Voicebox is a **local-first voice cloning studio** — a free and open-source alternative to ElevenLabs. Clone voices from a few seconds of audio or pick from 50+ preset voices, generate speech in 23 languages across 7 TTS engines, apply post-processing effects, and compose multi-voice projects with a timeline editor.
 
 - **Complete privacy** — models and voice data stay on your machine
-- **Professional tools** — multi-track timeline editor, audio trimming, conversation mixing
-- **Model flexibility** — currently powered by Qwen3-TTS, with support for XTTS, Bark, and other models coming soon
-- **API-first** — use the desktop app or integrate voice synthesis into your own projects
+- **7 TTS engines** — Qwen3-TTS, Qwen CustomVoice, LuxTTS, Chatterbox Multilingual, Chatterbox Turbo, HumeAI TADA, and Kokoro
+- **Cloning and preset voices** — zero-shot cloning from a reference sample, or curated preset voices via Kokoro (50 voices) and Qwen CustomVoice (9 voices)
+- **23 languages** — from English to Arabic, Japanese, Hindi, Swahili, and more
+- **Post-processing effects** — pitch shift, reverb, delay, chorus, compression, and filters
+- **Expressive speech** — paralinguistic tags like `[laugh]`, `[sigh]`, `[gasp]` via Chatterbox Turbo; natural-language delivery control via Qwen CustomVoice
+- **Unlimited length** — auto-chunking with crossfade for scripts, articles, and chapters
+- **Stories editor** — multi-track timeline for conversations, podcasts, and narratives
+- **API-first** — REST API for integrating voice synthesis into your own projects
 - **Native performance** — built with Tauri (Rust), not Electron
-- **Super fast on Mac** — MLX backend with native Metal acceleration for 4-5x faster inference on Apple Silicon
-
-Download a voice model, clone any voice from a few seconds of audio, and compose multi-voice projects with studio-grade editing tools. No Python install required, no cloud dependency, no limits.
+- **Runs everywhere** — macOS (MLX/Metal), Windows (CUDA), Linux, AMD ROCm, Intel Arc, Docker
 
 ---
 
 ## Download
 
-Voicebox is available now for macOS and Windows.
+| Platform              | Download                                               |
+| --------------------- | ------------------------------------------------------ |
+| macOS (Apple Silicon) | [Download DMG](https://voicebox.sh/download/mac-arm)   |
+| macOS (Intel)         | [Download DMG](https://voicebox.sh/download/mac-intel) |
+| Windows               | [Download MSI](https://voicebox.sh/download/windows)   |
+| Docker                | `docker compose up`                                    |
 
-| Platform | Download |
-|----------|----------|
-| macOS (Apple Silicon) | [Voicebox_aarch64.app.tar.gz](https://github.com/jamiepine/voicebox/releases/latest/download/Voicebox_aarch64.app.tar.gz) |
-| macOS (Intel) | [Voicebox_x64.app.tar.gz](https://github.com/jamiepine/voicebox/releases/latest/download/Voicebox_x64.app.tar.gz) |
-| Windows (MSI) | [Latest Windows MSI](https://github.com/jamiepine/voicebox/releases/latest) |
-| Windows (Setup) | [Latest Windows Setup](https://github.com/jamiepine/voicebox/releases/latest) |
+> **[View all binaries →](https://github.com/jamiepine/voicebox/releases/latest)**
 
-> **Linux** — Pre-built binaries are not yet available. Linux users can compile from source, see [Development](#development) below.
+> **Linux** — Pre-built binaries are not yet available. See [voicebox.sh/linux-install](https://voicebox.sh/linux-install) for build-from-source instructions.
+
+> **Having trouble?** See the [Troubleshooting Guide](docs/content/docs/overview/troubleshooting.mdx) for common install, generation, model-download, and GPU issues.
 
 ---
 
 ## Features
 
-### Voice Cloning with Qwen3-TTS
+### Multi-Engine Voice Cloning
 
-Powered by Alibaba's **Qwen3-TTS** — a breakthrough model that achieves near-perfect voice cloning from just a few seconds of audio.
+Seven TTS engines with different strengths, switchable per-generation:
 
-- **Instant cloning** — Upload a sample, get a voice profile
-- **High fidelity** — Natural prosody, emotion, and cadence
-- **Multi-language** — English, Chinese, and more coming
-- **Lightning fast on Mac** — MLX backend leverages Apple Silicon's Neural Engine for super-fast generation
+| Engine                      | Languages | Strengths                                                                                                                                |
+| --------------------------- | --------- | ---------------------------------------------------------------------------------------------------------------------------------------- |
+| **Qwen3-TTS** (0.6B / 1.7B) | 10        | High-quality multilingual cloning, delivery instructions ("speak slowly", "whisper")                                                     |
+| **Qwen CustomVoice**        | 10        | 9 curated preset voices with natural-language delivery control — no reference audio required                                             |
+| **LuxTTS**                  | English   | Lightweight (~1GB VRAM), 48kHz output, 150x realtime on CPU                                                                              |
+| **Chatterbox Multilingual** | 23        | Broadest language coverage — Arabic, Danish, Finnish, Greek, Hebrew, Hindi, Malay, Norwegian, Polish, Swahili, Swedish, Turkish and more |
+| **Chatterbox Turbo**        | English   | Fast 350M model with paralinguistic emotion/sound tags                                                                                   |
+| **TADA** (1B / 3B)          | 10        | HumeAI speech-language model — 700s+ coherent audio, text-acoustic dual alignment                                                        |
+| **Kokoro**                  | 8         | 50 curated preset voices, tiny 82M model, fast CPU inference                                                                             |
+
+### Emotions & Paralinguistic Tags
+
+Only **Chatterbox Turbo** interprets paralinguistic tags like `[laugh]` and
+`[sigh]`. Qwen3-TTS, LuxTTS, Chatterbox Multilingual, and HumeAI TADA read them
+literally as text.
+
+With **Chatterbox Turbo** selected, type `/` in the text input to open the tag
+inserter and add expressive tags inline with speech:
+
+`[laugh]` `[chuckle]` `[gasp]` `[cough]` `[sigh]` `[groan]` `[sniff]` `[shush]` `[clear throat]`
+
+### Post-Processing Effects
+
+8 audio effects powered by Spotify's `pedalboard` library. Apply after generation, preview in real time, build reusable presets.
+
+| Effect           | Description                                   |
+| ---------------- | --------------------------------------------- |
+| Pitch Shift      | Up or down by up to 12 semitones              |
+| Reverb           | Configurable room size, damping, wet/dry mix  |
+| Delay            | Echo with adjustable time, feedback, and mix  |
+| Chorus / Flanger | Modulated delay for metallic or lush textures |
+| Compressor       | Dynamic range compression                     |
+| Gain             | Volume adjustment (-40 to +40 dB)             |
+| High-Pass Filter | Remove low frequencies                        |
+| Low-Pass Filter  | Remove high frequencies                       |
+
+Ships with 4 built-in presets (Robotic, Radio, Echo Chamber, Deep Voice) and supports custom presets. Effects can be assigned per-profile as defaults.
+
+### Unlimited Generation Length
+
+Text is automatically split at sentence boundaries and each chunk is generated independently, then crossfaded together. Works with all engines.
+
+- Configurable auto-chunking limit (100–5,000 chars)
+- Crossfade slider (0–200ms) for smooth transitions
+- Max text length: 50,000 characters
+- Smart splitting respects abbreviations, CJK punctuation, and `[tags]`
+
+### Generation Versions
+
+Every generation supports multiple versions with provenance tracking:
+
+- **Original** — clean TTS output, always preserved
+- **Effects versions** — apply different effects chains from any source version
+- **Takes** — regenerate with a new seed for variation
+- **Source tracking** — each version records its lineage
+- **Favorites** — star generations for quick access
+
+### Async Generation Queue
+
+Generation is non-blocking. Submit and immediately start typing the next one.
+
+- Serial execution queue prevents GPU contention
+- Real-time SSE status streaming
+- Failed generations can be retried
+- Stale generations from crashes auto-recover on startup
 
 ### Voice Profile Management
 
-- **Create profiles** from audio files or record directly in-app
-- **Import/Export** profiles to share or back up
-- **Multi-sample support** — combine multiple samples for higher quality cloning
-- **Organize** with descriptions and language tags
-
-### Speech Generation
-
-- **Text-to-speech** with any cloned voice
-- **Batch generation** for long-form content
-- **Smart caching** — regenerate instantly with voice prompt caching
+- Create profiles from audio files or record directly in-app
+- Import/export profiles to share or back up
+- Multi-sample support for higher quality cloning
+- Per-profile default effects chains
+- Organize with descriptions and language tags
 
 ### Stories Editor
 
-Create multi-voice narratives, podcasts, and conversations with a timeline-based editor.
+Multi-voice timeline editor for conversations, podcasts, and narratives.
 
-- **Multi-track composition** — arrange multiple voice tracks in a single project
-- **Inline audio editing** — trim and split clips directly in the timeline
-- **Auto-playback** — preview stories with synchronized playhead
-- **Voice mixing** — build conversations with multiple participants
+- Multi-track composition with drag-and-drop
+- Inline audio trimming and splitting
+- Auto-playback with synchronized playhead
+- Version pinning per track clip
 
 ### Recording & Transcription
 
-- **In-app recording** with waveform visualization
-- **System audio capture** — record desktop audio on macOS and Windows
-- **Automatic transcription** powered by Whisper
-- **Export recordings** in multiple formats
+- In-app recording with waveform visualization
+- System audio capture (macOS and Windows)
+- Automatic transcription powered by Whisper (including Whisper Turbo)
+- Export recordings in multiple formats
 
-### Generation History
+### Model Management
 
-- **Full history** of all generated audio
-- **Search & filter** by voice, text, or date
-- **Re-generate** any past generation with one click
+- Per-model unload to free GPU memory without deleting downloads
+- Custom models directory via `VOICEBOX_MODELS_DIR`
+- Model folder migration with progress tracking
+- Download cancel/clear UI
 
-### Flexible Deployment
+### GPU Support
 
-- **Local mode** — Everything runs on your machine
-- **Remote mode** — Connect to a GPU server on your network
-- **One-click server** — Turn any machine into a Voicebox server
+| Platform                 | Backend        | Notes                                          |
+| ------------------------ | -------------- | ---------------------------------------------- |
+| macOS (Apple Silicon)    | MLX (Metal)    | 4-5x faster via Neural Engine                  |
+| Windows / Linux (NVIDIA) | PyTorch (CUDA) | Auto-downloads CUDA binary from within the app |
+| Linux (AMD)              | PyTorch (ROCm) | Auto-configures HSA_OVERRIDE_GFX_VERSION       |
+| Windows (any GPU)        | DirectML       | Universal Windows GPU support                  |
+| Intel Arc                | IPEX/XPU       | Intel discrete GPU acceleration                |
+| Any                      | CPU            | Works everywhere, just slower                  |
 
 ---
 
 ## API
 
-Voicebox exposes a full REST API, so you can integrate voice synthesis into your own apps.
-
-For the current local app and development workflow, the backend is typically available at `http://localhost:17493`.
-If you launch the backend manually with a different host or port, use that address instead.
+Voicebox exposes a full REST API for integrating voice synthesis into your own apps.
 
 ```bash
 # Generate speech
@@ -165,62 +231,40 @@ curl -X POST http://localhost:17493/profiles \
   -d '{"name": "My Voice", "language": "en"}'
 ```
 
-**Use cases:**
+**Use cases:** game dialogue, podcast production, accessibility tools, voice assistants, content automation.
 
-- Game dialogue systems
-- Podcast/video production pipelines
-- Accessibility tools
-- Voice assistants
-- Content creation automation
-
-Full API documentation is available at `http://localhost:17493/docs` in the default local workflow, or at `/docs` on whatever server address you configured.
+Full API documentation available at `http://localhost:17493/docs`.
 
 ---
 
 ## Tech Stack
 
-| Layer | Technology |
-|-------|------------|
-| Desktop App | Tauri (Rust) |
-| Frontend | React, TypeScript, Tailwind CSS |
-| State | Zustand, React Query |
-| Backend | FastAPI (Python) |
-| Voice Model | Qwen3-TTS (PyTorch or MLX) |
-| Transcription | Whisper (PyTorch or MLX) |
-| Inference Engine | MLX (Apple Silicon) / PyTorch (Windows/Linux/Intel) |
-| Database | SQLite |
-| Audio | WaveSurfer.js, librosa |
-
-**Why this stack?**
-
-- **Tauri over Electron** — 10x smaller bundle, native performance, lower memory
-- **FastAPI** — Async Python with automatic OpenAPI schema generation
-- **Type-safe end-to-end** — Generated TypeScript client from OpenAPI spec
+| Layer         | Technology                                        |
+| ------------- | ------------------------------------------------- |
+| Desktop App   | Tauri (Rust)                                      |
+| Frontend      | React, TypeScript, Tailwind CSS                   |
+| State         | Zustand, React Query                              |
+| Backend       | FastAPI (Python)                                  |
+| TTS Engines   | Qwen3-TTS, Qwen CustomVoice, LuxTTS, Chatterbox, Chatterbox Turbo, TADA, Kokoro |
+| Effects       | Pedalboard (Spotify)                              |
+| Transcription | Whisper / Whisper Turbo (PyTorch or MLX)          |
+| Inference     | MLX (Apple Silicon) / PyTorch (CUDA/ROCm/XPU/CPU) |
+| Database      | SQLite                                            |
+| Audio         | WaveSurfer.js, librosa                            |
 
 ---
 
 ## Roadmap
 
-Voicebox is the beginning of something bigger. Here's what's coming:
+| Feature                 | Description                                    |
+| ----------------------- | ---------------------------------------------- |
+| **Real-time Streaming** | Stream audio as it generates, word by word     |
+| **Voice Design**        | Create new voices from text descriptions       |
+| **More Models**         | XTTS, Bark, and other open-source voice models  |
+| **Plugin Architecture** | Extend with custom models and effects          |
+| **Mobile Companion**    | Control Voicebox from your phone               |
 
-### Coming Soon
-
-| Feature | Description |
-|---------|-------------|
-| **Real-time Synthesis** | Stream audio as it generates, word by word |
-| **Conversation Mode** | Multi-speaker dialogues with automatic turn-taking |
-| **Voice Effects** | Pitch shift, reverb, M3GAN-style effects |
-| **Timeline Editor** | Audio studio with word-level precision editing |
-| **More Models** | XTTS, Bark, and other open-source voice models |
-
-### Future Vision
-
-- **Voice Design** — Create new voices from text descriptions
-- **Project System** — Save and load complex multi-voice sessions
-- **Plugin Architecture** — Extend with custom models and effects
-- **Mobile Companion** — Control Voicebox from your phone
-
-Voicebox aims to be the **one-stop shop for everything voice** — cloning, synthesis, editing, effects, and beyond.
+For the **full engineering status, open-issue triage, and prioritized work queue**, see [`docs/PROJECT_STATUS.md`](docs/PROJECT_STATUS.md) — a living document that tracks what's shipped, what's in-flight, candidate TTS engines under evaluation, and why we've accepted or backlogged specific integrations.
 
 ---
 
@@ -242,14 +286,6 @@ Install [just](https://github.com/casey/just): `brew install just` or `cargo ins
 
 **Prerequisites:** [Bun](https://bun.sh), [Rust](https://rustup.rs), [Python 3.11+](https://python.org), [Tauri Prerequisites](https://v2.tauri.app/start/prerequisites/), and [Xcode](https://developer.apple.com/xcode/) on macOS.
 
-### Platform Notes
-
-| Platform | GPU Backend | Notes |
-|----------|-------------|-------|
-| macOS (Apple Silicon) | MLX (Metal) | 4-5x faster inference via Neural Engine |
-| Windows (NVIDIA) | PyTorch (CUDA) | `just setup` auto-installs CUDA PyTorch |
-| Windows/Linux (no NVIDIA) | PyTorch (CPU) | Works but slower |
-
 ### Building Locally
 
 ```bash
@@ -257,7 +293,11 @@ just build          # Build CPU server binary + Tauri app
 just build-local    # (Windows) Build CPU + CUDA server binaries + Tauri app
 ```
 
-`just build-local` produces a production-ready installer with the CUDA binary pre-placed for GPU switching.
+### Adding New Voice Models
+
+The multi-engine architecture makes adding new TTS engines straightforward. A [step-by-step guide](docs/content/docs/developer/tts-engines.mdx) covers the full process: dependency research, backend protocol implementation, frontend wiring, and PyInstaller bundling.
+
+The guide is optimized for AI coding agents. An [agent skill](.agents/skills/add-tts-engine/SKILL.md) can pick up a model name and handle the entire integration autonomously — you just test the build locally.
 
 ### Project Structure
 

SECURITY.md

@@ -6,8 +6,8 @@ We release patches for security vulnerabilities. Which versions are eligible for
 
 | Version | Supported          |
 | ------- | ------------------ |
-| 0.1.x   | :white_check_mark: |
-| < 0.1   | :x:                |
+| 0.3.x   | :white_check_mark: |
+| < 0.3   | :x:                |
 
 ## Reporting a Vulnerability
 
@@ -82,7 +82,7 @@ Timeline may vary based on severity and complexity.
 ## Security Updates
 
 Security updates will be:
-- Released as patch versions (e.g., 0.1.1)
+- Released as patch versions (e.g., 0.3.2)
 - Documented in CHANGELOG.md
 - Announced via GitHub releases
 - Automatically delivered via auto-updater

app/package.json

@@ -1,11 +1,12 @@
 {
   "name": "@voicebox/app",
-  "version": "0.2.0",
+  "version": "0.4.4",
   "private": true,
   "type": "module",
   "scripts": {
     "dev": "vite",
     "build": "vite build",
+    "typecheck": "tsc -p tsconfig.json --noEmit",
     "preview": "vite preview",
     "lint": "biome lint src",
     "lint:fix": "biome lint --write src",
@@ -43,11 +44,14 @@
     "clsx": "^2.1.1",
     "date-fns": "^3.6.0",
     "framer-motion": "^12.29.0",
+    "i18next": "^26.0.6",
+    "i18next-browser-languagedetector": "^8.2.1",
     "lucide-react": "^0.454.0",
     "motion": "^12.29.0",
     "react": "^18.3.0",
     "react-dom": "^18.3.0",
     "react-hook-form": "^7.53.0",
+    "react-i18next": "^17.0.4",
     "react-sound-visualizer": "^1.4.0",
     "tailwind-merge": "^2.5.4",
     "wavesurfer.js": "^7.0.0",

app/plugins/changelog.ts

@@ -0,0 +1,23 @@
+import { readFileSync } from 'node:fs';
+import path from 'node:path';
+import type { Plugin } from 'vite';
+
+/** Vite plugin that exposes CHANGELOG.md as `virtual:changelog`. */
+export function changelogPlugin(repoRoot: string): Plugin {
+  const virtualId = 'virtual:changelog';
+  const resolvedId = '\0' + virtualId;
+  const changelogPath = path.resolve(repoRoot, 'CHANGELOG.md');
+
+  return {
+    name: 'changelog',
+    resolveId(id) {
+      if (id === virtualId) return resolvedId;
+    },
+    load(id) {
+      if (id === resolvedId) {
+        const raw = readFileSync(changelogPath, 'utf-8');
+        return `export default ${JSON.stringify(raw)};`;
+      }
+    },
+  };
+}

app/src/App.tsx

@@ -4,12 +4,42 @@ import voiceboxLogo from '@/assets/voicebox-logo.png';
 import ShinyText from '@/components/ShinyText';
 import { TitleBarDragRegion } from '@/components/TitleBarDragRegion';
 import { useAutoUpdater } from '@/hooks/useAutoUpdater';
+import { apiClient } from '@/lib/api/client';
+import type { HealthResponse } from '@/lib/api/types';
 import { TOP_SAFE_AREA_PADDING } from '@/lib/constants/ui';
 import { cn } from '@/lib/utils/cn';
 import { usePlatform } from '@/platform/PlatformContext';
 import { router } from '@/router';
+import { useLogStore } from '@/stores/logStore';
 import { useServerStore } from '@/stores/serverStore';
 
+/**
+ * Validate that a health response has the expected Voicebox-specific shape.
+ * Prevents misidentifying an unrelated service on the same port.
+ */
+function isVoiceboxHealthResponse(health: HealthResponse): boolean {
+  return (
+    health?.status === 'healthy' &&
+    typeof health.model_loaded === 'boolean' &&
+    typeof health.gpu_available === 'boolean'
+  );
+}
+
+/**
+ * Check whether a startup error indicates the port is occupied by an external
+ * server (which we should try to reuse via health-check polling) vs. a real
+ * failure (missing sidecar, signing issue, etc.) that should surface immediately.
+ */
+function isPortInUseError(error: unknown): boolean {
+  const msg = error instanceof Error ? error.message : String(error);
+  return (
+    msg.includes('already in use') ||
+    msg.includes('port') ||
+    msg.includes('EADDRINUSE') ||
+    msg.includes('address already in use')
+  );
+}
+
 const LOADING_MESSAGES = [
   'Warming up tensors...',
   'Calibrating synthesizer engine...',
@@ -36,6 +66,7 @@ const LOADING_MESSAGES = [
 function App() {
   const platform = usePlatform();
   const [serverReady, setServerReady] = useState(false);
+  const [startupError, setStartupError] = useState<string | null>(null);
   const [loadingMessageIndex, setLoadingMessageIndex] = useState(0);
   const serverStartingRef = useRef(false);
 
@@ -63,6 +94,14 @@ function App() {
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [platform.lifecycle]);
 
+  // Subscribe to server logs
+  useEffect(() => {
+    const unsubscribe = platform.lifecycle.subscribeToServerLogs((entry) => {
+      useLogStore.getState().addEntry(entry);
+    });
+    return unsubscribe;
+  }, [platform.lifecycle]);
+
   // Setup window close handler and auto-start server when running in Tauri (production only)
   useEffect(() => {
     if (!platform.metadata.isTauri) {
@@ -82,7 +121,6 @@ function App() {
       console.log('Dev mode: Skipping auto-start of server (run it separately)');
       setServerReady(true); // Mark as ready so UI doesn't show loading screen
       // Mark that server was not started by app (so we don't try to stop it on close)
-      // @ts-expect-error - adding property to window
       window.__voiceboxServerStartedByApp = false;
       return;
     }
@@ -105,14 +143,52 @@ function App() {
         useServerStore.getState().setServerUrl(serverUrl);
         setServerReady(true);
         // Mark that we started the server (so we know to stop it on close)
-        // @ts-expect-error - adding property to window
         window.__voiceboxServerStartedByApp = true;
       })
       .catch((error) => {
         console.error('Failed to auto-start server:', error);
         serverStartingRef.current = false;
-        // @ts-expect-error - adding property to window
         window.__voiceboxServerStartedByApp = false;
+
+        // Only fall back to health-check polling when the error indicates the
+        // port is occupied (likely an external server). For real failures
+        // (missing sidecar, signing issues, etc.) surface the error immediately.
+        if (!isPortInUseError(error)) {
+          const msg = error instanceof Error ? error.message : String(error);
+          console.error('Real startup failure — not polling:', msg);
+          setStartupError(msg);
+          return;
+        }
+
+        // Fall back to polling: the server may already be running externally
+        // (e.g. started via python/uvicorn/Docker). Poll the health endpoint
+        // until it responds with a valid Voicebox payload, then transition to
+        // the main UI.
+        console.log('Falling back to health-check polling...');
+        const pollInterval = setInterval(async () => {
+          try {
+            const health = await apiClient.getHealth();
+            if (!isVoiceboxHealthResponse(health)) {
+              console.log('Health response is not from a Voicebox server, keep polling...');
+              return;
+            }
+            console.log('External Voicebox server detected via health check');
+            clearInterval(pollInterval);
+            setServerReady(true);
+          } catch {
+            // Server not ready yet, keep polling
+          }
+        }, 2000);
+
+        // Stop polling after 2 minutes and surface the failure
+        setTimeout(() => {
+          clearInterval(pollInterval);
+          serverStartingRef.current = false;
+          setStartupError(
+            'Could not connect to a Voicebox server within 2 minutes. ' +
+              'Please check that the server is running and try again.',
+          );
+        }, 120_000);
       });
 
     // Cleanup: stop server on actual unmount (not StrictMode remount)
@@ -159,15 +235,34 @@ function App() {
               className="w-48 h-48 object-contain animate-fade-in-scale relative z-10"
             />
           </div>
-          <div className="animate-fade-in-delayed">
-            <ShinyText
-              text={LOADING_MESSAGES[loadingMessageIndex]}
-              className="text-lg font-medium text-muted-foreground"
-              speed={2}
-              color="hsl(var(--muted-foreground))"
-              shineColor="hsl(var(--foreground))"
-            />
-          </div>
+          {startupError ? (
+            <div className="animate-fade-in-delayed max-w-md mx-auto space-y-3">
+              <p className="text-lg font-medium text-destructive">Server startup failed</p>
+              <p className="text-sm text-muted-foreground">{startupError}</p>
+              <button
+                type="button"
+                className="mt-2 px-4 py-2 text-sm rounded-md bg-primary text-primary-foreground hover:bg-primary/90 transition-colors"
+                onClick={() => {
+                  setStartupError(null);
+                  serverStartingRef.current = false;
+                  // Trigger a re-mount of the effect by toggling state
+                  window.location.reload();
+                }}
+              >
+                Retry
+              </button>
+            </div>
+          ) : (
+            <div className="animate-fade-in-delayed">
+              <ShinyText
+                text={LOADING_MESSAGES[loadingMessageIndex]}
+                className="text-lg font-medium text-muted-foreground"
+                speed={2}
+                color="hsl(var(--muted-foreground))"
+                shineColor="hsl(var(--foreground))"
+              />
+            </div>
+          )}
         </div>
       </div>
     );

app/src/components/AppFrame/AppFrame.tsx

@@ -1,5 +1,6 @@
 import { useRouterState } from '@tanstack/react-router';
 import { TitleBarDragRegion } from '@/components/TitleBarDragRegion';
+import { AudioKeepAlive } from '@/components/AudioPlayer/AudioKeepAlive';
 import { AudioPlayer } from '@/components/AudioPlayer/AudioPlayer';
 import { StoryTrackEditor } from '@/components/StoriesTab/StoryTrackEditor';
 import { TOP_SAFE_AREA_PADDING } from '@/lib/constants/ui';
@@ -14,16 +15,19 @@ interface AppFrameProps {
 export function AppFrame({ children }: AppFrameProps) {
   const routerState = useRouterState();
   const isStoriesRoute = routerState.location.pathname === '/stories';
-  
+
   const selectedStoryId = useStoryStore((state) => state.selectedStoryId);
   const { data: story } = useStory(selectedStoryId);
-  
+
   // Show track editor when on stories route with a selected story that has items
   const showTrackEditor = isStoriesRoute && selectedStoryId && story && story.items.length > 0;
 
   return (
-    <div className={cn('h-screen bg-background flex flex-col overflow-hidden', TOP_SAFE_AREA_PADDING)}>
+    <div
+      className={cn('h-screen bg-background flex flex-col overflow-hidden', TOP_SAFE_AREA_PADDING)}
+    >
       <TitleBarDragRegion />
+      <AudioKeepAlive />
       {children}
       {showTrackEditor ? (
         <StoryTrackEditor storyId={story.id} items={story.items} />

app/src/components/AudioPlayer/AudioKeepAlive.tsx

@@ -0,0 +1,85 @@
+import { useEffect, useRef } from 'react';
+import { debug } from '@/lib/utils/debug';
+
+// WKWebView tears down the app's CoreAudio output when idle for long enough,
+// and a JS-level reload (cmd+R) does NOT restore it — only relaunching the
+// Tauri app does. Keeping a silent <audio> element looping forever prevents
+// the OS audio session from ever going dormant.
+//
+// Real silence (zero PCM samples) at full volume is preferred over a muted
+// element: browsers/WebKit can optimize muted media away, which defeats the
+// purpose of holding the session open.
+
+function buildSilentWavUrl(seconds = 1, sampleRate = 8000): string {
+  const numSamples = seconds * sampleRate;
+  const bytes = 44 + numSamples * 2;
+  const buffer = new ArrayBuffer(bytes);
+  const view = new DataView(buffer);
+  const write = (offset: number, str: string) => {
+    for (let i = 0; i < str.length; i++) view.setUint8(offset + i, str.charCodeAt(i));
+  };
+  write(0, 'RIFF');
+  view.setUint32(4, bytes - 8, true);
+  write(8, 'WAVE');
+  write(12, 'fmt ');
+  view.setUint32(16, 16, true);
+  view.setUint16(20, 1, true);
+  view.setUint16(22, 1, true);
+  view.setUint32(24, sampleRate, true);
+  view.setUint32(28, sampleRate * 2, true);
+  view.setUint16(32, 2, true);
+  view.setUint16(34, 16, true);
+  write(36, 'data');
+  view.setUint32(40, numSamples * 2, true);
+  return URL.createObjectURL(new Blob([buffer], { type: 'audio/wav' }));
+}
+
+export function AudioKeepAlive() {
+  const audioRef = useRef<HTMLAudioElement | null>(null);
+
+  useEffect(() => {
+    const url = buildSilentWavUrl(1, 8000);
+    const el = new Audio(url);
+    el.loop = true;
+    el.volume = 1;
+    el.preload = 'auto';
+    audioRef.current = el;
+
+    const tryPlay = () => {
+      if (!audioRef.current) return;
+      if (!audioRef.current.paused) return;
+      audioRef.current.play().catch((err) => {
+        debug.log('[AudioKeepAlive] play blocked (will retry on next gesture):', err);
+      });
+    };
+
+    tryPlay();
+
+    // Autoplay may be blocked until first user interaction — re-attempt then.
+    const onGesture = () => tryPlay();
+    window.addEventListener('pointerdown', onGesture, { once: false });
+    window.addEventListener('keydown', onGesture, { once: false });
+
+    // If the webview ever pauses the element on background, resume on return.
+    const onWake = () => {
+      if (!document.hidden) tryPlay();
+    };
+    document.addEventListener('visibilitychange', onWake);
+    window.addEventListener('focus', onWake);
+    window.addEventListener('pageshow', onWake);
+
+    return () => {
+      window.removeEventListener('pointerdown', onGesture);
+      window.removeEventListener('keydown', onGesture);
+      document.removeEventListener('visibilitychange', onWake);
+      window.removeEventListener('focus', onWake);
+      window.removeEventListener('pageshow', onWake);
+      el.pause();
+      el.src = '';
+      URL.revokeObjectURL(url);
+      audioRef.current = null;
+    };
+  }, []);
+
+  return null;
+}

app/src/components/AudioPlayer/AudioPlayer.tsx

@@ -17,7 +17,6 @@ export function AudioPlayer() {
     audioUrl,
     audioId,
     profileId,
-    title,
     isPlaying,
     currentTime,
     duration,
@@ -63,7 +62,7 @@ export function AudioPlayer() {
     );
 
     return shouldUseNative;
-  }, [profileChannels, channels, profileId]);
+  }, [profileChannels, channels, platform.metadata.isTauri]);
 
   const waveformRef = useRef<HTMLDivElement>(null);
   const wavesurferRef = useRef<WaveSurfer | null>(null);
@@ -73,31 +72,21 @@ export function AudioPlayer() {
   const isUsingNativePlaybackRef = useRef(false);
   const [isLoading, setIsLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
+  const [wsReady, setWsReady] = useState(false);
 
-  // Initialize WaveSurfer (only when audioUrl exists and container is ready)
+  // Create WaveSurfer once when the player becomes visible (audioUrl is set).
+  // This instance is reused for all subsequent audio loads - never destroyed until unmount.
   useEffect(() => {
-    // Don't initialize if no audioUrl or already initialized
-    if (!audioUrl) {
-      return;
-    }
+    if (!audioUrl) return;
+    if (wavesurferRef.current) return; // already created
 
-    if (wavesurferRef.current) {
-      debug.log('WaveSurfer already initialized, skipping');
-      return;
-    }
-
-    debug.log('Creating NEW WaveSurfer instance');
-
-    // Wait for container to be properly rendered
     const initWaveSurfer = () => {
       const container = waveformRef.current;
       if (!container) {
-        // Container not ready yet, retry
         setTimeout(initWaveSurfer, 50);
         return;
       }
 
-      // Check if container has dimensions and is visible
       const rect = container.getBoundingClientRect();
       const style = window.getComputedStyle(container);
       const isVisible =
@@ -107,501 +96,221 @@ export function AudioPlayer() {
         style.visibility !== 'hidden';
 
       if (!isVisible) {
-        // Retry after a short delay
         setTimeout(initWaveSurfer, 50);
         return;
       }
 
-      debug.log('Initializing WaveSurfer...', {
-        container,
+      debug.log('Creating WaveSurfer instance', {
         width: rect.width,
         height: rect.height,
       });
 
       try {
-        // Get computed CSS variable values
         const root = document.documentElement;
         const getCSSVar = (varName: string) => {
           const value = getComputedStyle(root).getPropertyValue(varName).trim();
           return value ? `hsl(${value})` : '';
         };
 
-        const waveColor = getCSSVar('--muted');
-        const progressColor = getCSSVar('--accent');
-        const cursorColor = getCSSVar('--accent');
-
         const wavesurfer = WaveSurfer.create({
-          container: container,
-          waveColor: waveColor,
-          progressColor: progressColor,
-          cursorColor: cursorColor,
+          container,
+          waveColor: getCSSVar('--muted'),
+          progressColor: getCSSVar('--accent'),
+          cursorColor: getCSSVar('--accent'),
+          cursorWidth: 3,
           barWidth: 2,
           barRadius: 2,
           height: 80,
           normalize: true,
+          interact: true,
+          dragToSeek: { debounceTime: 0 },
+          mediaControls: false,
           backend: 'WebAudio',
-          interact: true, // Enable interaction (click to seek)
-          mediaControls: false, // Don't show native controls
         });
 
-        wavesurferRef.current = wavesurfer;
-        debug.log('WaveSurfer created successfully');
-      } catch (error) {
-        debug.error('Failed to create WaveSurfer:', error);
-        setError(
-          `Failed to initialize waveform: ${error instanceof Error ? error.message : String(error)}`,
-        );
-        return;
-      }
+        // Wire up event handlers (these persist for the lifetime of the instance)
+        wavesurfer.on('timeupdate', (time) => {
+          const dur = usePlayerStore.getState().duration;
+          if (dur > 0 && time >= dur) {
+            setCurrentTime(dur);
+            const loop = usePlayerStore.getState().isLooping;
+            if (loop) {
+              wavesurfer.seekTo(0);
+              wavesurfer.play().catch((err) => debug.error('Loop play failed:', err));
+            } else {
+              wavesurfer.pause();
+              setIsPlaying(false);
+            }
+            return;
+          }
+          setCurrentTime(time);
+        });
 
-      const wavesurfer = wavesurferRef.current;
-      if (!wavesurfer) return;
+        wavesurfer.on('ready', () => {
+          const dur = wavesurfer.getDuration();
+          setDuration(dur);
+          loadingRef.current = false;
+          setIsLoading(false);
+          setError(null);
+          debug.log('Audio ready, duration:', dur);
 
-      // Update store when time changes, stop if past duration
-      wavesurfer.on('timeupdate', (time) => {
-        const dur = usePlayerStore.getState().duration;
-        if (dur > 0 && time >= dur) {
-          setCurrentTime(dur);
+          wavesurfer.setVolume(usePlayerStore.getState().volume);
+          wavesurfer.setMuted(false);
+
+          // Auto-play if the flag is set (story mode advance or explicit play)
+          const shouldAutoPlayNow = usePlayerStore.getState().shouldAutoPlay;
+          if (shouldAutoPlayNow) {
+            usePlayerStore.getState().clearAutoPlayFlag();
+            wavesurfer.play().catch((err) => {
+              debug.error('Failed to autoplay:', err);
+            });
+          } else {
+            debug.log('Skipping auto-play - shouldAutoPlay is false');
+          }
+        });
+
+        wavesurfer.on('play', () => setIsPlaying(true));
+        wavesurfer.on('pause', () => {
+          setIsPlaying(false);
+          setCurrentTime(wavesurfer.getCurrentTime());
+        });
+
+        wavesurfer.on('seeking', (time) => setCurrentTime(time));
+
+        // Mute audio during drag-to-seek to prevent popping from the WebAudio
+        // backend's hard stop/start cycle on each seek. Unmute with a short
+        // fade-in when the drag ends.
+        const seekMedia = wavesurfer.getMediaElement() as any;
+        const seekGain: GainNode | null = seekMedia?.getGainNode?.() ?? null;
+        if (seekGain) {
+          const ctx = seekGain.context as AudioContext;
+          wavesurfer.on('dragstart', () => {
+            seekGain.gain.cancelScheduledValues(ctx.currentTime);
+            seekGain.gain.setTargetAtTime(0, ctx.currentTime, 0.002);
+          });
+          wavesurfer.on('dragend', () => {
+            seekGain.gain.cancelScheduledValues(ctx.currentTime);
+            seekGain.gain.setTargetAtTime(1, ctx.currentTime, 0.01);
+          });
+        }
+        wavesurfer.on('finish', () => {
           const loop = usePlayerStore.getState().isLooping;
           if (loop) {
             wavesurfer.seekTo(0);
-            wavesurfer.play();
+            wavesurfer.play().catch((err) => debug.error('Loop play failed:', err));
           } else {
-            wavesurfer.pause();
             setIsPlaying(false);
+            const onFinish = usePlayerStore.getState().onFinish;
+            if (onFinish) onFinish();
           }
-          return;
-        }
-        setCurrentTime(time);
-      });
-
-      // Update store when duration is loaded
-      wavesurfer.on('ready', async () => {
-        const dur = wavesurfer.getDuration();
-        setDuration(dur);
-        loadingRef.current = false;
-        setIsLoading(false);
-        setError(null);
-        debug.log('Audio ready, duration:', dur);
-        debug.log('Waveform should be visible now');
-
-        // Ensure volume is set
-        const currentVolume = usePlayerStore.getState().volume;
-        wavesurfer.setVolume(currentVolume);
-
-        // Get the underlying audio element and ensure it's not muted
-        // (unless we're using native playback, which will be set later)
-        const mediaElement = wavesurfer.getMediaElement();
-        if (mediaElement && !isUsingNativePlaybackRef.current) {
-          mediaElement.volume = currentVolume;
-          mediaElement.muted = false;
-          debug.log('Audio element volume:', mediaElement.volume, 'muted:', mediaElement.muted);
-        }
-
-        // Auto-play when ready - check if we should use native playback
-        // Get current values from the store and queries at runtime (not captured closure values)
-        const currentAudioUrl = usePlayerStore.getState().audioUrl;
-        const currentProfileId = usePlayerStore.getState().profileId;
-
-        debug.log('Auto-play check - capturing runtime values...');
-
-        // Fetch profile channels at runtime (not using captured value)
-        let runtimeProfileChannels = null;
-        let runtimeChannels = null;
-
-        if (platform.metadata.isTauri && currentProfileId) {
-          try {
-            runtimeProfileChannels = await apiClient.getProfileChannels(currentProfileId);
-            debug.log('Runtime profileChannels:', runtimeProfileChannels);
-
-            if (runtimeProfileChannels && runtimeProfileChannels.channel_ids.length > 0) {
-              runtimeChannels = await apiClient.listChannels();
-              debug.log('Runtime channels:', runtimeChannels);
-            }
-          } catch (error) {
-            debug.error('Failed to fetch runtime channel data:', error);
-          }
-        }
-
-        debug.log('Auto-play check:', {
-          isTauri: platform.metadata.isTauri,
-          currentAudioUrl,
-          currentProfileId,
-          hasProfileChannels: !!runtimeProfileChannels,
-          hasChannels: !!runtimeChannels,
         });
 
-        if (
-          platform.metadata.isTauri &&
-          currentAudioUrl &&
-          currentProfileId &&
-          runtimeProfileChannels &&
-          runtimeChannels
-        ) {
-          debug.log('Attempting native audio playback...');
-
-          // Stop any existing native playback first
-          if (isUsingNativePlaybackRef.current) {
-            try {
-              platform.audio.stopPlayback();
-              debug.log('Stopped existing native playback before starting new one');
-            } catch (error) {
-              debug.error('Failed to stop existing playback:', error);
-            }
-          }
-
-          try {
-            // Collect all device IDs from assigned channels
-            const assignedChannels = runtimeChannels.filter((ch: any) =>
-              runtimeProfileChannels.channel_ids.includes(ch.id),
-            );
-            debug.log('Assigned channels for playback:', assignedChannels);
-
-            // Check if any assigned channel has non-default devices
-            const shouldUseNative = assignedChannels.some(
-              (ch: any) => ch.device_ids.length > 0 && !ch.is_default,
-            );
-            debug.log('Should use native playback:', shouldUseNative);
-
-            if (!shouldUseNative) {
-              debug.log('No custom devices assigned, falling back to WaveSurfer');
-              // Reset native playback flag and unmute WaveSurfer
-              isUsingNativePlaybackRef.current = false;
-              const mediaElement = wavesurfer.getMediaElement();
-              if (mediaElement) {
-                const currentVolume = usePlayerStore.getState().volume;
-                mediaElement.volume = currentVolume;
-                mediaElement.muted = false;
-                debug.log(
-                  'WaveSurfer unmuted for normal playback - volume:',
-                  mediaElement.volume,
-                  'muted:',
-                  mediaElement.muted,
-                );
-              }
-            } else {
-              const deviceIds = assignedChannels.flatMap((ch: any) => ch.device_ids);
-              debug.log('Device IDs to play to:', deviceIds);
-
-              if (deviceIds.length > 0) {
-                debug.log('Fetching audio data from:', currentAudioUrl);
-                // Fetch audio data
-                const response = await fetch(currentAudioUrl);
-                const audioData = new Uint8Array(await response.arrayBuffer());
-                debug.log('Audio data size:', audioData.length);
-
-                // Play via native audio
-                debug.log('Invoking play_audio_to_devices...');
-                try {
-                  await platform.audio.playToDevices(audioData, deviceIds);
-                  debug.log('play_audio_to_devices completed successfully');
-
-                  // Mark that we're using native playback
-                  isUsingNativePlaybackRef.current = true;
-
-                  // Mute WaveSurfer's audio element to prevent UI audio output
-                  // Keep WaveSurfer running for visualization
-                  const mediaElement = wavesurfer.getMediaElement();
-                  if (mediaElement) {
-                    mediaElement.volume = 0;
-                    mediaElement.muted = true;
-                    debug.log(
-                      'WaveSurfer muted for native playback - volume:',
-                      mediaElement.volume,
-                      'muted:',
-                      mediaElement.muted,
-                    );
-                  }
-
-                  // Start WaveSurfer playback for visualization (muted)
-                  wavesurfer.play().catch((error) => {
-                    debug.error('Failed to start WaveSurfer visualization:', error);
-                  });
-
-                  setIsPlaying(true);
-                  debug.log('Auto-playing via native audio routing - SUCCESS');
-                  return;
-                } catch (invokeError) {
-                  debug.error('play_audio_to_devices invoke failed:', invokeError);
-                  throw invokeError;
-                }
-              } else {
-                debug.log('No device IDs found, falling back to WaveSurfer');
-              }
-            }
-          } catch (error) {
-            debug.error(
-              'Native playback failed during auto-play, falling back to WaveSurfer:',
-              error,
-            );
-            // Reset native playback flag and unmute WaveSurfer
-            isUsingNativePlaybackRef.current = false;
-            const mediaElement = wavesurfer.getMediaElement();
-            if (mediaElement) {
-              const currentVolume = usePlayerStore.getState().volume;
-              mediaElement.volume = currentVolume;
-              mediaElement.muted = false;
-              debug.log(
-                'WaveSurfer unmuted after native playback failure - volume:',
-                mediaElement.volume,
-                'muted:',
-                mediaElement.muted,
-              );
-            }
-            // Fall through to WaveSurfer playback
-          }
-        } else {
-          debug.log('Not using native playback, using WaveSurfer');
-          // Reset native playback flag and unmute WaveSurfer
-          isUsingNativePlaybackRef.current = false;
-          const mediaElement = wavesurfer.getMediaElement();
-          if (mediaElement) {
-            const currentVolume = usePlayerStore.getState().volume;
-            mediaElement.volume = currentVolume;
-            mediaElement.muted = false;
-            debug.log(
-              'WaveSurfer unmuted for normal playback - volume:',
-              mediaElement.volume,
-              'muted:',
-              mediaElement.muted,
-            );
-          }
-        }
-
-        // Only auto-play if shouldAutoPlay flag is set (user explicitly clicked to play)
-        const shouldAutoPlayNow = usePlayerStore.getState().shouldAutoPlay;
-        if (shouldAutoPlayNow) {
-          // Clear the flag first
-          usePlayerStore.getState().clearAutoPlayFlag();
-
-          // Use a small delay to ensure audio element is fully ready
-          setTimeout(() => {
-            wavesurfer.play().catch((error) => {
-              debug.error('Failed to autoplay:', error);
-              // Don't show error for autoplay failures (browser restrictions)
-            });
-          }, 100);
-        } else {
-          debug.log('Skipping auto-play - shouldAutoPlay is false');
-        }
-      });
-
-      // Handle play/pause
-      wavesurfer.on('play', () => {
-        setIsPlaying(true);
-        // Ensure audio element volume is set correctly
-        const mediaElement = wavesurfer.getMediaElement();
-        if (mediaElement) {
-          // Double-check: if using native playback, keep WaveSurfer muted
-          // Otherwise, ensure it's unmuted
-          if (isUsingNativePlaybackRef.current) {
-            mediaElement.volume = 0;
-            mediaElement.muted = true;
-            debug.log('Playing (native mode) - WaveSurfer muted for visualization only');
-          } else {
-            // Ensure WaveSurfer is unmuted for normal playback
-            const currentVolume = usePlayerStore.getState().volume;
-            mediaElement.volume = currentVolume;
-            mediaElement.muted = false;
-            debug.log(
-              'Playing (normal mode) - volume:',
-              mediaElement.volume,
-              'muted:',
-              mediaElement.muted,
-            );
-          }
-        }
-      });
-      wavesurfer.on('pause', () => setIsPlaying(false));
-      wavesurfer.on('finish', () => {
-        // Check loop state from store
-        const loop = usePlayerStore.getState().isLooping;
-        if (loop) {
-          wavesurfer.seekTo(0);
-          wavesurfer.play();
-        } else {
-          setIsPlaying(false);
-          // Trigger finish callback if set
-          const onFinish = usePlayerStore.getState().onFinish;
-          if (onFinish) {
-            onFinish();
-          }
-        }
-      });
-
-      // Handle errors
-      wavesurfer.on('error', (error) => {
-        debug.error('WaveSurfer error:', error);
-        setIsLoading(false);
-        setError(`Audio error: ${error instanceof Error ? error.message : String(error)}`);
-      });
-
-      // Handle loading
-      wavesurfer.on('loading', (percent) => {
-        setIsLoading(true);
-        if (percent === 100) {
+        wavesurfer.on('error', (err) => {
+          debug.error('WaveSurfer error:', err);
           setIsLoading(false);
-        }
-      });
+          setError(`Audio error: ${err instanceof Error ? err.message : String(err)}`);
+        });
 
-      // Load audio immediately if audioUrl is already set
-      if (audioUrl) {
-        debug.log('WaveSurfer ready, loading audio:', audioUrl);
-        loadingRef.current = true;
-        setIsLoading(true);
-        // Stop any current playback before loading new audio
-        if (wavesurfer.isPlaying()) {
-          wavesurfer.pause();
-        }
-        wavesurfer
-          .load(audioUrl)
-          .then(() => {
-            debug.log('Audio loaded into WaveSurfer');
-            loadingRef.current = false;
-          })
-          .catch((error) => {
-            debug.error('Failed to load audio into WaveSurfer:', error);
-            loadingRef.current = false;
-            setIsLoading(false);
-            setError(
-              `Failed to load audio: ${error instanceof Error ? error.message : String(error)}`,
-            );
-          });
+        wavesurfer.on('loading', (percent) => {
+          setIsLoading(true);
+          if (percent === 100) setIsLoading(false);
+        });
+
+        wavesurferRef.current = wavesurfer;
+        setWsReady(true);
+        debug.log('WaveSurfer created successfully');
+      } catch (err) {
+        debug.error('Failed to create WaveSurfer:', err);
+        setError(
+          `Failed to initialize waveform: ${err instanceof Error ? err.message : String(err)}`,
+        );
       }
     };
 
-    // Use double requestAnimationFrame to ensure DOM is fully rendered
-    let rafId1: number;
-    let rafId2: number;
-    let timeoutId: number | null = null;
-
-    rafId1 = requestAnimationFrame(() => {
-      rafId2 = requestAnimationFrame(() => {
-        // Add a small delay to ensure container is fully laid out
-        timeoutId = setTimeout(() => {
-          initWaveSurfer();
-        }, 10);
-      });
+    let rafId: number;
+    rafId = requestAnimationFrame(() => {
+      initWaveSurfer();
     });
 
     return () => {
-      debug.log('Cleaning up WaveSurfer initialization effect');
-      if (rafId1) cancelAnimationFrame(rafId1);
-      if (rafId2) cancelAnimationFrame(rafId2);
-      if (timeoutId) clearTimeout(timeoutId);
+      cancelAnimationFrame(rafId);
+    };
+    // Only run on mount-like conditions. audioUrl is here so we create the instance
+    // when the player first appears, but we guard against re-creation above.
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [audioUrl, setIsPlaying, setDuration, setCurrentTime]);
+
+  // Destroy WaveSurfer only on unmount
+  useEffect(() => {
+    return () => {
       if (wavesurferRef.current) {
-        debug.log('Destroying WaveSurfer instance');
+        debug.log('Destroying WaveSurfer instance (unmount)');
         try {
-          const mediaElement = wavesurferRef.current.getMediaElement();
-          if (mediaElement) {
-            mediaElement.pause();
-            mediaElement.src = '';
-          }
           wavesurferRef.current.destroy();
-        } catch (error) {
-          debug.error('Error destroying WaveSurfer:', error);
+        } catch (err) {
+          debug.error('Error destroying WaveSurfer:', err);
         }
         wavesurferRef.current = null;
+        setWsReady(false);
       }
     };
-  }, [audioUrl, setIsPlaying, setCurrentTime, setDuration]);
+  }, []);
 
-  // Load audio when URL changes (only if WaveSurfer is already initialized)
+  // Load audio when URL changes (reuses the existing WaveSurfer instance)
   useEffect(() => {
     const wavesurfer = wavesurferRef.current;
+    if (!wavesurfer || !wsReady) return;
 
-    if (!audioUrl || !wavesurfer) {
-      // Reset state when no audio or WaveSurfer not ready
-      if (!audioUrl && wavesurfer) {
-        wavesurfer.pause();
-        wavesurfer.seekTo(0);
-        loadingRef.current = false;
-        setIsLoading(false);
-        setDuration(0);
-        setCurrentTime(0);
-        setError(null);
-        // Reset native playback flag
-        isUsingNativePlaybackRef.current = false;
-      }
+    if (!audioUrl) {
+      // No audio - pause and reset
+      wavesurfer.pause();
+      wavesurfer.seekTo(0);
+      loadingRef.current = false;
+      setIsLoading(false);
+      setDuration(0);
+      setCurrentTime(0);
+      setError(null);
+      isUsingNativePlaybackRef.current = false;
       return;
     }
 
-    // Stop native playback if it was active
-    if (isUsingNativePlaybackRef.current && platform.metadata.isTauri) {
-      try {
-        platform.audio.stopPlayback();
-        debug.log('Stopped native audio playback');
-      } catch (error) {
-        debug.error('Failed to stop native playback:', error);
-      }
-    }
-
-    // Reset native playback flag when loading new audio
-    // Also unmute WaveSurfer if it was muted
-    if (isUsingNativePlaybackRef.current) {
-      const mediaElement = wavesurfer.getMediaElement();
-      if (mediaElement) {
-        mediaElement.muted = false;
-        mediaElement.volume = usePlayerStore.getState().volume;
-      }
-    }
+    // Reset native playback state
     isUsingNativePlaybackRef.current = false;
+    wavesurfer.setMuted(false);
+    wavesurfer.setVolume(usePlayerStore.getState().volume);
 
-    // CRITICAL: Force stop any current playback and cancel any pending loads
-    // This must happen BEFORE any early returns
-    debug.log('Audio URL changed to:', audioUrl);
-
-    // COMPLETELY stop and destroy the current audio
+    // Stop current playback and reset position before loading new audio.
+    // With the WebAudio backend, pause() accumulates playedDuration internally.
+    // seekTo(0) resets it so the new track starts from the beginning.
+    debug.log('Loading new audio URL:', audioUrl);
     try {
-      // First pause if playing
       if (wavesurfer.isPlaying()) {
-        debug.log('Pausing current playback');
         wavesurfer.pause();
       }
-
-      // Stop the media element explicitly
-      const mediaElement = wavesurfer.getMediaElement();
-      if (mediaElement) {
-        debug.log('Stopping media element');
-        mediaElement.pause();
-        mediaElement.currentTime = 0;
-        mediaElement.src = '';
-      }
-
-      // Use empty() to completely destroy the waveform and media element
-      debug.log('Calling wavesurfer.empty() to destroy audio');
-      wavesurfer.empty();
-    } catch (error) {
-      debug.error('Error stopping previous audio:', error);
-      // Continue anyway to load new audio
+      wavesurfer.seekTo(0);
+    } catch (err) {
+      debug.error('Error resetting before load:', err);
     }
 
-    // Reset loading state to allow new load (cancel any pending loads)
-    loadingRef.current = false;
-
-    // Now start the new load
     loadingRef.current = true;
     setIsLoading(true);
     setError(null);
     setCurrentTime(0);
     setDuration(0);
 
-    // Load new audio
-    debug.log('Starting new audio load for:', audioUrl);
     wavesurfer
       .load(audioUrl)
       .then(() => {
-        debug.log('Audio load promise resolved');
-        // Don't set loading to false here - wait for 'ready' event
+        debug.log('Audio loaded into WaveSurfer');
+        loadingRef.current = false;
       })
-      .catch((error) => {
-        debug.error('Failed to load audio:', error);
-        debug.error('Audio URL:', audioUrl);
+      .catch((err) => {
+        debug.error('Failed to load audio:', err);
         loadingRef.current = false;
         setIsLoading(false);
-        setError(`Failed to load audio: ${error instanceof Error ? error.message : String(error)}`);
+        setError(`Failed to load audio: ${err instanceof Error ? err.message : String(err)}`);
       });
-  }, [audioUrl, setCurrentTime, setDuration]);
+  }, [audioUrl, wsReady, setCurrentTime, setDuration]);
 
   // Sync play/pause state (only when user clicks play/pause button, not auto-sync)
   // This effect is kept for external state changes but should be minimal
@@ -609,7 +318,6 @@ export function AudioPlayer() {
     if (!wavesurferRef.current || duration === 0) return;
 
     if (isPlaying && wavesurferRef.current.isPlaying() === false) {
-      // Only auto-play if audio is ready
       wavesurferRef.current.play().catch((error) => {
         debug.error('Failed to play:', error);
         setIsPlaying(false);
@@ -624,20 +332,6 @@ export function AudioPlayer() {
   useEffect(() => {
     if (wavesurferRef.current) {
       wavesurferRef.current.setVolume(volume);
-      // Also ensure the underlying audio element volume is set
-      const mediaElement = wavesurferRef.current.getMediaElement();
-      if (mediaElement) {
-        // If using native playback, keep WaveSurfer muted regardless of volume setting
-        if (isUsingNativePlaybackRef.current) {
-          mediaElement.volume = 0;
-          mediaElement.muted = true;
-          debug.log('Volume sync: Using native playback, keeping WaveSurfer muted');
-        } else {
-          mediaElement.volume = volume;
-          mediaElement.muted = volume === 0;
-          debug.log('Volume synced:', volume, 'muted:', mediaElement.muted);
-        }
-      }
     }
   }, [volume]);
 
@@ -662,7 +356,6 @@ export function AudioPlayer() {
       return;
     }
 
-    // Reset to beginning and play
     debug.log('Restarting current audio from beginning');
     wavesurfer.seekTo(0);
     wavesurfer.play().catch((error) => {
@@ -671,34 +364,35 @@ export function AudioPlayer() {
       setError(`Playback error: ${error instanceof Error ? error.message : String(error)}`);
     });
 
-    // Clear the restart flag
     clearRestartFlag();
   }, [shouldRestart, duration, setIsPlaying, clearRestartFlag]);
 
-  // Handle shouldAutoPlay flag - for story mode auto-advance
-  const shouldAutoPlay = usePlayerStore((state) => state.shouldAutoPlay);
-  const clearAutoPlayFlag = usePlayerStore((state) => state.clearAutoPlayFlag);
+  // Auto-play is handled exclusively in the WaveSurfer 'ready' event handler.
+  // A separate effect here would race with the ready event since the WebAudio
+  // backend needs to fully decode the audio before play() works correctly.
 
+  // Spacebar to play/pause (capture phase so it fires before focused elements)
   useEffect(() => {
-    const wavesurfer = wavesurferRef.current;
-    if (!wavesurfer || !shouldAutoPlay || duration === 0) {
-      return;
-    }
-
-    // Auto-play the newly loaded audio
-    debug.log('Auto-playing next track in story mode');
-    wavesurfer.seekTo(0);
-    wavesurfer.play().catch((error) => {
-      debug.error('Failed to auto-play:', error);
-      setIsPlaying(false);
-      setError(`Playback error: ${error instanceof Error ? error.message : String(error)}`);
-    });
-
-    // Clear the auto-play flag
-    clearAutoPlayFlag();
-  }, [shouldAutoPlay, duration, setIsPlaying, clearAutoPlayFlag]);
-
-  // Handle loop - WaveSurfer handles this via the 'finish' event
+    const onKeyDown = (e: KeyboardEvent) => {
+      if (e.code !== 'Space') return;
+      // Ignore if user is typing in an input/textarea
+      const tag = (e.target as HTMLElement)?.tagName;
+      if (tag === 'INPUT' || tag === 'TEXTAREA' || (e.target as HTMLElement)?.isContentEditable) {
+        return;
+      }
+      if (audioUrl && duration > 0 && wavesurferRef.current) {
+        e.preventDefault();
+        e.stopPropagation();
+        if (wavesurferRef.current.isPlaying()) {
+          wavesurferRef.current.pause();
+        } else {
+          wavesurferRef.current.play().catch((err) => debug.error('Spacebar play failed:', err));
+        }
+      }
+    };
+    document.addEventListener('keydown', onKeyDown, true);
+    return () => document.removeEventListener('keydown', onKeyDown, true);
+  }, [audioUrl, duration]);
 
   const handlePlayPause = async () => {
     // Standard WaveSurfer playback (works for both normal and native playback modes)
@@ -757,11 +451,8 @@ export function AudioPlayer() {
           isUsingNativePlaybackRef.current = true;
 
           // Mute WaveSurfer and start it for visualization
-          const mediaElement = wavesurferRef.current.getMediaElement();
-          if (mediaElement) {
-            mediaElement.volume = 0;
-            mediaElement.muted = true;
-          }
+          wavesurferRef.current.setVolume(0);
+          wavesurferRef.current.setMuted(true);
 
           // Start WaveSurfer for visualization (muted)
           wavesurferRef.current.play().catch((error) => {
@@ -785,11 +476,8 @@ export function AudioPlayer() {
     } else {
       // Ensure WaveSurfer is not muted if not using native playback
       if (!isUsingNativePlaybackRef.current) {
-        const mediaElement = wavesurferRef.current.getMediaElement();
-        if (mediaElement) {
-          mediaElement.muted = false;
-          mediaElement.volume = volume;
-        }
+        wavesurferRef.current.setMuted(false);
+        wavesurferRef.current.setVolume(volume);
       }
 
       wavesurferRef.current.play().catch((error) => {
@@ -843,32 +531,32 @@ export function AudioPlayer() {
             size="icon"
             onClick={handlePlayPause}
             disabled={isLoading || duration === 0}
-            className="shrink-0"
+            className={`shrink-0 -mt-2 ${isPlaying ? 'bg-accent text-accent-foreground' : ''}`}
             title={duration === 0 && !isLoading ? 'Audio not loaded' : ''}
             aria-label={
               duration === 0 && !isLoading ? 'Audio not loaded' : isPlaying ? 'Pause' : 'Play'
             }
           >
-            {isPlaying ? <Pause className="h-5 w-5" /> : <Play className="h-5 w-5" />}
+            {isPlaying ? (
+              <Pause className="h-5 w-5 fill-current" />
+            ) : (
+              <Play className="h-5 w-5 fill-current" />
+            )}
           </Button>
 
           {/* Waveform */}
           <div className="flex-1 min-w-0 flex flex-col gap-1">
-            <div ref={waveformRef} className="w-full min-h-[80px]" />
-            {duration > 0 && (
-              <Slider
-                value={duration > 0 ? [(currentTime / duration) * 100] : [0]}
-                onValueChange={handleSeek}
-                max={100}
-                step={0.1}
-                className="w-full"
-                aria-label="Playback position"
-                aria-valuetext={`${formatAudioDuration(currentTime)} of ${formatAudioDuration(duration)}`}
-              />
-            )}
-            {isLoading && (
-              <div className="text-xs text-muted-foreground text-center py-2">Loading audio...</div>
-            )}
+            <div ref={waveformRef} className="w-full min-h-[80px] select-none" />
+            <Slider
+              value={duration > 0 ? [(currentTime / duration) * 100] : [0]}
+              onValueChange={handleSeek}
+              max={100}
+              step={0.1}
+              className="w-full"
+              aria-label="Playback position"
+              aria-valuetext={`${formatAudioDuration(currentTime)} of ${formatAudioDuration(duration)}`}
+            />
+
             {error && <div className="text-xs text-destructive text-center py-2">{error}</div>}
           </div>
 
@@ -879,19 +567,12 @@ export function AudioPlayer() {
             <span className="font-mono">{formatAudioDuration(duration)}</span>
           </div>
 
-          {/* Title */}
-          {title && (
-            <div className="text-sm font-medium truncate max-w-[200px] shrink-0 hidden lg:block">
-              {title}
-            </div>
-          )}
-
           {/* Loop Button */}
           <Button
             variant="ghost"
             size="icon"
             onClick={toggleLoop}
-            className={isLooping ? 'text-primary' : ''}
+            className={isLooping ? 'bg-accent text-accent-foreground' : ''}
             title="Toggle loop"
             aria-label={isLooping ? 'Stop looping' : 'Loop'}
           >

app/src/components/AudioTab/AudioTab.tsx

@@ -1,6 +1,7 @@
 import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
 import { Check, CheckCircle2, Edit, Plus, Speaker, Trash2 } from 'lucide-react';
 import { useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import {
@@ -33,6 +34,7 @@ interface AudioDevice {
 }
 
 export function AudioTab() {
+  const { t } = useTranslation();
   const platform = usePlatform();
   const [createDialogOpen, setCreateDialogOpen] = useState(false);
   const [editingChannel, setEditingChannel] = useState<string | null>(null);
@@ -119,14 +121,14 @@ export function AudioTab() {
   if (channelsLoading || devicesLoading) {
     return (
       <div className="flex items-center justify-center h-full">
-        <div className="text-muted-foreground">Loading...</div>
+        <div className="text-muted-foreground">{t('audioChannels.loading')}</div>
       </div>
     );
   }
 
-  const handleChannelDelete = async (e, channelId) => {
+  const handleChannelDelete = async (e: React.MouseEvent, channelId: string) => {
     e.stopPropagation();
-    if (await confirm('Delete this channel?')) {
+    if (await confirm(t('audioChannels.confirmDelete'))) {
       deleteChannel.mutate(channelId);
     }
   };
@@ -140,10 +142,10 @@ export function AudioTab() {
   return (
     <div className="h-full flex flex-col">
       <div className="flex items-center justify-between mb-6 shrink-0">
-        <h2 className="text-2xl font-bold">Audio Channels</h2>
+        <h2 className="text-2xl font-bold">{t('audioChannels.title')}</h2>
         <Button onClick={() => setCreateDialogOpen(true)}>
           <Plus className="h-4 w-4 mr-2" />
-          New Channel
+          {t('audioChannels.newChannel')}
         </Button>
       </div>
 
@@ -158,13 +160,10 @@ export function AudioTab() {
           {allChannels.length === 0 ? (
             <div className="flex flex-col items-center justify-center py-12 border-2 border-dashed border-muted rounded-md">
               <Speaker className="h-12 w-12 text-muted-foreground mb-4" />
-              <p className="text-muted-foreground mb-4">
-                No audio channels yet. Create your first channel to route voices to specific
-                devices.
-              </p>
+              <p className="text-muted-foreground mb-4">{t('audioChannels.empty.message')}</p>
               <Button onClick={() => setCreateDialogOpen(true)}>
                 <Plus className="h-4 w-4 mr-2" />
-                Create Channel
+                {t('audioChannels.empty.action')}
               </Button>
             </div>
           ) : (
@@ -195,7 +194,7 @@ export function AudioTab() {
                         <div className="space-y-2.5 ml-10">
                           <div>
                             <div className="text-xs font-medium text-muted-foreground mb-1">
-                              Output Devices
+                              {t('audioChannels.labels.outputDevices')}
                             </div>
                             <div className="flex flex-wrap gap-1.5">
                               {channel.device_ids.length > 0
@@ -224,7 +223,7 @@ export function AudioTab() {
 
                           <div>
                             <div className="text-xs font-medium text-muted-foreground mb-1">
-                              Assigned Voices
+                              {t('audioChannels.labels.assignedVoices')}
                             </div>
                             <ChannelVoicesList channelId={channel.id} />
                           </div>
@@ -270,13 +269,13 @@ export function AudioTab() {
           )}
         >
           <div className="shrink-0 mb-4">
-            <h3 className="text-lg font-semibold">Available Devices</h3>
+            <h3 className="text-lg font-semibold">{t('audioChannels.devices.title')}</h3>
             <p className="text-sm text-muted-foreground mt-1">
               {selectedChannelId
                 ? selectedChannel?.is_default
-                  ? 'Default channel uses system default device'
-                  : 'Click devices to add or remove them from the selected channel'
-                : 'Select a channel to assign devices'}
+                  ? t('audioChannels.devices.defaultNote')
+                  : t('audioChannels.devices.toggleHint')
+                : t('audioChannels.devices.selectHint')}
             </p>
           </div>
           {allDevices.length > 0 ? (
@@ -344,8 +343,8 @@ export function AudioTab() {
               <CheckCircle2 className="h-12 w-12 text-muted-foreground mb-4" />
               <p className="text-muted-foreground text-center">
                 {platform.metadata.isTauri
-                  ? 'No audio devices found'
-                  : 'Audio device selection requires Tauri'}
+                  ? t('audioChannels.devices.empty')
+                  : t('audioChannels.devices.requiresTauri')}
               </p>
             </div>
           )}
@@ -394,6 +393,7 @@ export function AudioTab() {
 }
 
 function ChannelVoicesList({ channelId }: { channelId: string }) {
+  const { t } = useTranslation();
   const { data: voices } = useQuery({
     queryKey: ['channel-voices', channelId],
     queryFn: () => apiClient.getChannelVoices(channelId),
@@ -416,7 +416,7 @@ function ChannelVoicesList({ channelId }: { channelId: string }) {
           </Badge>
         ))
       ) : (
-        <span className="text-sm text-muted-foreground">No voices assigned</span>
+        <span className="text-sm text-muted-foreground">{t('audioChannels.noVoicesAssigned')}</span>
       )}
     </div>
   );
@@ -430,6 +430,7 @@ interface CreateChannelDialogProps {
 }
 
 function CreateChannelDialog({ open, onOpenChange, devices, onCreate }: CreateChannelDialogProps) {
+  const { t } = useTranslation();
   const [name, setName] = useState('');
   const [selectedDevices, setSelectedDevices] = useState<string[]>([]);
 
@@ -445,23 +446,21 @@ function CreateChannelDialog({ open, onOpenChange, devices, onCreate }: CreateCh
     <Dialog open={open} onOpenChange={onOpenChange}>
       <DialogContent>
         <DialogHeader>
-          <DialogTitle>Create Audio Channel</DialogTitle>
-          <DialogDescription>
-            Create a new audio channel (bus) to route voices to specific output devices.
-          </DialogDescription>
+          <DialogTitle>{t('audioChannels.createDialog.title')}</DialogTitle>
+          <DialogDescription>{t('audioChannels.createDialog.description')}</DialogDescription>
         </DialogHeader>
         <div className="space-y-4">
           <div>
-            <Label htmlFor="channel-name">Channel Name</Label>
+            <Label htmlFor="channel-name">{t('audioChannels.fields.name')}</Label>
             <Input
               id="channel-name"
               value={name}
               onChange={(e) => setName(e.target.value)}
-              placeholder="e.g., Virtual Cable, Broadcast"
+              placeholder={t('audioChannels.fields.namePlaceholder')}
             />
           </div>
           <div>
-            <Label>Output Devices</Label>
+            <Label>{t('audioChannels.labels.outputDevices')}</Label>
             <Select
               value={selectedDevices[0] || ''}
               onValueChange={(value) => {
@@ -471,12 +470,12 @@ function CreateChannelDialog({ open, onOpenChange, devices, onCreate }: CreateCh
               }}
             >
               <SelectTrigger>
-                <SelectValue placeholder="Select device" />
+                <SelectValue placeholder={t('audioChannels.selectDevice')} />
               </SelectTrigger>
               <SelectContent>
                 {devices.map((device) => (
                   <SelectItem key={device.id} value={device.id}>
-                    {device.name} {device.is_default && '(default)'}
+                    {device.name} {device.is_default && `(${t('audioChannels.defaultSuffix')})`}
                   </SelectItem>
                 ))}
               </SelectContent>
@@ -509,10 +508,10 @@ function CreateChannelDialog({ open, onOpenChange, devices, onCreate }: CreateCh
         </div>
         <DialogFooter>
           <Button variant="outline" onClick={() => onOpenChange(false)}>
-            Cancel
+            {t('common.cancel')}
           </Button>
           <Button onClick={handleSubmit} disabled={!name.trim()}>
-            Create
+            {t('audioChannels.createDialog.action')}
           </Button>
         </DialogFooter>
       </DialogContent>
@@ -545,6 +544,7 @@ function EditChannelDialog({
   onUpdate,
   onSetVoices,
 }: EditChannelDialogProps) {
+  const { t } = useTranslation();
   const [name, setName] = useState(channel.name);
   const [selectedDevices, setSelectedDevices] = useState<string[]>(channel.device_ids);
   const [selectedVoices, setSelectedVoices] = useState<string[]>(channelVoices);
@@ -560,16 +560,16 @@ function EditChannelDialog({
     <Dialog open={open} onOpenChange={onOpenChange}>
       <DialogContent className="max-w-2xl">
         <DialogHeader>
-          <DialogTitle>Edit Channel</DialogTitle>
-          <DialogDescription>Update channel settings and voice assignments.</DialogDescription>
+          <DialogTitle>{t('audioChannels.editDialog.title')}</DialogTitle>
+          <DialogDescription>{t('audioChannels.editDialog.description')}</DialogDescription>
         </DialogHeader>
         <div className="space-y-4">
           <div>
-            <Label htmlFor="edit-channel-name">Channel Name</Label>
+            <Label htmlFor="edit-channel-name">{t('audioChannels.fields.name')}</Label>
             <Input id="edit-channel-name" value={name} onChange={(e) => setName(e.target.value)} />
           </div>
           <div>
-            <Label>Output Devices</Label>
+            <Label>{t('audioChannels.labels.outputDevices')}</Label>
             <Select
               value=""
               onValueChange={(value) => {
@@ -579,12 +579,12 @@ function EditChannelDialog({
               }}
             >
               <SelectTrigger>
-                <SelectValue placeholder="Add device" />
+                <SelectValue placeholder={t('audioChannels.addDevice')} />
               </SelectTrigger>
               <SelectContent>
                 {devices.map((device) => (
                   <SelectItem key={device.id} value={device.id}>
-                    {device.name} {device.is_default && '(default)'}
+                    {device.name} {device.is_default && `(${t('audioChannels.defaultSuffix')})`}
                   </SelectItem>
                 ))}
               </SelectContent>
@@ -615,7 +615,7 @@ function EditChannelDialog({
             )}
           </div>
           <div>
-            <Label>Assigned Voices</Label>
+            <Label>{t('audioChannels.labels.assignedVoices')}</Label>
             <Select
               value=""
               onValueChange={(value) => {
@@ -625,7 +625,7 @@ function EditChannelDialog({
               }}
             >
               <SelectTrigger>
-                <SelectValue placeholder="Add voice" />
+                <SelectValue placeholder={t('audioChannels.addVoice')} />
               </SelectTrigger>
               <SelectContent>
                 {profiles.map((profile) => (
@@ -663,10 +663,10 @@ function EditChannelDialog({
         </div>
         <DialogFooter>
           <Button variant="outline" onClick={() => onOpenChange(false)}>
-            Cancel
+            {t('common.cancel')}
           </Button>
           <Button onClick={handleSubmit} disabled={!name.trim()}>
-            Save
+            {t('common.save')}
           </Button>
         </DialogFooter>
       </DialogContent>

app/src/components/Effects/EffectsChainEditor.tsx

@@ -18,6 +18,7 @@ import { CSS } from '@dnd-kit/utilities';
 import { useQuery } from '@tanstack/react-query';
 import { ChevronDown, ChevronRight, GripVertical, Plus, Power, Trash2 } from 'lucide-react';
 import { useCallback, useMemo, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { Label } from '@/components/ui/label';
 import {
@@ -55,6 +56,7 @@ export function EffectsChainEditor({
   compact = false,
   showPresets = true,
 }: EffectsChainEditorProps) {
+  const { t } = useTranslation();
   const [expandedId, setExpandedId] = useState<string | null>(null);
 
   // Maintain stable IDs for each effect across renders.
@@ -177,17 +179,27 @@ export function EffectsChainEditor({
             }}
           >
             <SelectTrigger className="h-8 flex-1 text-xs focus:ring-0 focus:ring-offset-0">
-              <SelectValue placeholder="Load preset..." />
+              <SelectValue placeholder={t('effects.chain.loadPreset')} />
             </SelectTrigger>
             <SelectContent>
-              {presets?.map((p) => (
-                <SelectItem key={p.id} value={p.id}>
-                  {p.name}
-                  {p.description && (
-                    <span className="ml-1 text-muted-foreground">- {p.description}</span>
-                  )}
-                </SelectItem>
-              ))}
+              {presets?.map((p) => {
+                const name = p.is_builtin
+                  ? t(`effects.builtinPresets.${p.name}.name`, { defaultValue: p.name })
+                  : p.name;
+                const description = p.is_builtin
+                  ? t(`effects.builtinPresets.${p.name}.description`, {
+                      defaultValue: p.description ?? '',
+                    })
+                  : p.description;
+                return (
+                  <SelectItem key={p.id} value={p.id}>
+                    {name}
+                    {description && (
+                      <span className="ml-1 text-muted-foreground">- {description}</span>
+                    )}
+                  </SelectItem>
+                );
+              })}
             </SelectContent>
           </Select>
 
@@ -198,7 +210,7 @@ export function EffectsChainEditor({
               className="h-8 px-2 text-xs text-muted-foreground"
               onClick={clearAll}
             >
-              Clear
+              {t('effects.chain.clear')}
             </Button>
           )}
         </div>
@@ -229,12 +241,12 @@ export function EffectsChainEditor({
         <Select onValueChange={addEffect}>
           <SelectTrigger className="h-8 border-dashed text-xs text-muted-foreground focus:ring-0 focus:ring-offset-0">
             <Plus className="mr-1 h-3.5 w-3.5" />
-            <SelectValue placeholder="Add effect..." />
+            <SelectValue placeholder={t('effects.chain.addEffect')} />
           </SelectTrigger>
           <SelectContent>
             {availableEffects.effects.map((e) => (
               <SelectItem key={e.type} value={e.type}>
-                {e.label}
+                {t(`effects.types.${e.type}.label`, { defaultValue: e.label })}
               </SelectItem>
             ))}
           </SelectContent>
@@ -270,6 +282,7 @@ function SortableEffectItem({
   onToggleEnabled,
   onUpdateParam,
 }: SortableEffectItemProps) {
+  const { t } = useTranslation();
   const { attributes, listeners, setNodeRef, transform, transition, isDragging } = useSortable({
     id,
   });
@@ -280,7 +293,9 @@ function SortableEffectItem({
     zIndex: isDragging ? 10 : undefined,
   };
 
-  const label = effectDef?.label ?? effect.type;
+  const label = t(`effects.types.${effect.type}.label`, {
+    defaultValue: effectDef?.label ?? effect.type,
+  });
 
   return (
     <div
@@ -328,7 +343,7 @@ function SortableEffectItem({
             effect.enabled ? 'text-primary' : 'text-muted-foreground hover:text-foreground',
           )}
           onClick={onToggleEnabled}
-          title={effect.enabled ? 'Disable' : 'Enable'}
+          title={effect.enabled ? t('effects.chain.disable') : t('effects.chain.enable')}
         >
           <Power className="h-3.5 w-3.5" />
         </button>
@@ -337,7 +352,7 @@ function SortableEffectItem({
           type="button"
           className="p-0.5 text-muted-foreground hover:text-destructive"
           onClick={onRemove}
-          title="Remove"
+          title={t('effects.chain.remove')}
         >
           <Trash2 className="h-3.5 w-3.5" />
         </button>
@@ -352,7 +367,9 @@ function SortableEffectItem({
               <div key={paramName} className="space-y-1">
                 <div className="flex items-center justify-between">
                   <Label className="text-[11px] text-muted-foreground">
-                    {paramDef.description}
+                    {t(`effects.types.${effect.type}.params.${paramName}`, {
+                      defaultValue: paramDef.description,
+                    })}
                   </Label>
                   <span className="text-[11px] font-mono tabular-nums text-foreground">
                     {currentValue.toFixed(

app/src/components/EffectsTab/EffectsDetail.tsx

@@ -1,10 +1,19 @@
 import { useQuery, useQueryClient } from '@tanstack/react-query';
 import { Loader2, Play, Save, Trash2, Wand2 } from 'lucide-react';
 import { useEffect, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 
 import { EffectsChainEditor } from '@/components/Effects/EffectsChainEditor';
 import { GenerationPicker } from '@/components/Effects/GenerationPicker';
 import { Button } from '@/components/ui/button';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog';
 import { Input } from '@/components/ui/input';
 import { Label } from '@/components/ui/label';
 import { Separator } from '@/components/ui/separator';
@@ -17,6 +26,7 @@ import { useEffectsStore } from '@/stores/effectsStore';
 import { usePlayerStore } from '@/stores/playerStore';
 
 export function EffectsDetail() {
+  const { t } = useTranslation();
   const selectedPresetId = useEffectsStore((s) => s.selectedPresetId);
   const isCreatingNew = useEffectsStore((s) => s.isCreatingNew);
   const workingChain = useEffectsStore((s) => s.workingChain);
@@ -29,6 +39,11 @@ export function EffectsDetail() {
   const [saving, setSaving] = useState(false);
   const [deleting, setDeleting] = useState(false);
 
+  // "Save as Custom" dialog state
+  const [saveAsDialogOpen, setSaveAsDialogOpen] = useState(false);
+  const [saveAsName, setSaveAsName] = useState('');
+  const [saveAsDescription, setSaveAsDescription] = useState('');
+
   // Preview state
   const [previewGenId, setPreviewGenId] = useState<string | null>(null);
   const [previewLoading, setPreviewLoading] = useState(false);
@@ -82,6 +97,18 @@ export function EffectsDetail() {
 
   const isEditing = !!selectedPresetId || isCreatingNew;
   const isBuiltIn = preset?.is_builtin ?? false;
+  const presetName = preset
+    ? preset.is_builtin
+      ? t(`effects.builtinPresets.${preset.name}.name`, { defaultValue: preset.name })
+      : preset.name
+    : '';
+  const presetDescription = preset
+    ? preset.is_builtin
+      ? t(`effects.builtinPresets.${preset.name}.description`, {
+          defaultValue: preset.description ?? '',
+        })
+      : preset.description
+    : '';
 
   async function handlePreview() {
     if (!previewGenId || workingChain.length === 0) return;
@@ -102,8 +129,8 @@ export function EffectsDetail() {
       setAudioWithAutoPlay(url, `preview-${Date.now()}`, null, 'Effects Preview');
     } catch (error) {
       toast({
-        title: 'Preview failed',
-        description: error instanceof Error ? error.message : 'Unknown error',
+        title: t('effects.toast.previewFailed'),
+        description: error instanceof Error ? error.message : t('common.unknownError'),
         variant: 'destructive',
       });
     } finally {
@@ -117,7 +144,7 @@ export function EffectsDetail() {
 
   async function handleSaveNew() {
     if (!name.trim()) {
-      toast({ title: 'Name required', variant: 'destructive' });
+      toast({ title: t('effects.toast.nameRequired'), variant: 'destructive' });
       return;
     }
     setSaving(true);
@@ -130,11 +157,14 @@ export function EffectsDetail() {
       queryClient.invalidateQueries({ queryKey: ['effect-presets'] });
       setIsCreatingNew(false);
       setSelectedPresetId(created.id);
-      toast({ title: 'Preset saved', description: `"${created.name}" has been created.` });
+      toast({
+        title: t('effects.toast.saved'),
+        description: t('effects.toast.createdDescription', { name: created.name }),
+      });
     } catch (error) {
       toast({
-        title: 'Failed to save',
-        description: error instanceof Error ? error.message : 'Unknown error',
+        title: t('effects.toast.saveFailed'),
+        description: error instanceof Error ? error.message : t('common.unknownError'),
         variant: 'destructive',
       });
     } finally {
@@ -153,11 +183,11 @@ export function EffectsDetail() {
       });
       queryClient.invalidateQueries({ queryKey: ['effect-presets'] });
       queryClient.invalidateQueries({ queryKey: ['effect-preset', selectedPresetId] });
-      toast({ title: 'Preset updated' });
+      toast({ title: t('effects.toast.updated') });
     } catch (error) {
       toast({
-        title: 'Failed to save',
-        description: error instanceof Error ? error.message : 'Unknown error',
+        title: t('effects.toast.saveFailed'),
+        description: error instanceof Error ? error.message : t('common.unknownError'),
         variant: 'destructive',
       });
     } finally {
@@ -165,8 +195,41 @@ export function EffectsDetail() {
     }
   }
 
-  async function handleSaveAsNew() {
-    await handleSaveNew();
+  function handleSaveAsNew() {
+    const sourceName = isBuiltIn ? presetName : name;
+    setSaveAsName(t('effects.saveAs.suggestedName', { name: sourceName }));
+    setSaveAsDescription(description);
+    setSaveAsDialogOpen(true);
+  }
+
+  async function handleSaveAsConfirm() {
+    if (!saveAsName.trim()) {
+      toast({ title: t('effects.toast.nameRequired'), variant: 'destructive' });
+      return;
+    }
+    setSaving(true);
+    try {
+      const created = await apiClient.createEffectPreset({
+        name: saveAsName.trim(),
+        description: saveAsDescription.trim() || undefined,
+        effects_chain: workingChain,
+      });
+      queryClient.invalidateQueries({ queryKey: ['effect-presets'] });
+      setSaveAsDialogOpen(false);
+      setSelectedPresetId(created.id);
+      toast({
+        title: t('effects.toast.saved'),
+        description: t('effects.toast.createdDescription', { name: created.name }),
+      });
+    } catch (error) {
+      toast({
+        title: t('effects.toast.saveFailed'),
+        description: error instanceof Error ? error.message : t('common.unknownError'),
+        variant: 'destructive',
+      });
+    } finally {
+      setSaving(false);
+    }
   }
 
   async function handleDelete() {
@@ -177,11 +240,11 @@ export function EffectsDetail() {
       queryClient.invalidateQueries({ queryKey: ['effect-presets'] });
       setSelectedPresetId(null);
       setWorkingChain([]);
-      toast({ title: 'Preset deleted' });
+      toast({ title: t('effects.toast.deleted') });
     } catch (error) {
       toast({
-        title: 'Failed to delete',
-        description: error instanceof Error ? error.message : 'Unknown error',
+        title: t('effects.toast.deleteFailed'),
+        description: error instanceof Error ? error.message : t('common.unknownError'),
         variant: 'destructive',
       });
     } finally {
@@ -194,7 +257,7 @@ export function EffectsDetail() {
       <div className="flex-1 flex items-center justify-center text-muted-foreground">
         <div className="text-center space-y-2">
           <Wand2 className="h-10 w-10 mx-auto opacity-30" />
-          <p className="text-sm">Select a preset or create a new one</p>
+          <p className="text-sm">{t('effects.placeholder')}</p>
         </div>
       </div>
     );
@@ -202,10 +265,13 @@ export function EffectsDetail() {
 
   return (
     <div className="flex flex-col h-full min-h-0">
-      {/* Header */}
       <div className="flex items-center justify-between mb-4">
         <h2 className="text-lg font-semibold">
-          {isCreatingNew ? 'New Preset' : isBuiltIn ? preset?.name : 'Edit Preset'}
+          {isCreatingNew
+            ? t('effects.detail.newTitle')
+            : isBuiltIn
+              ? presetName
+              : t('effects.detail.editTitle')}
         </h2>
         <div className="flex items-center gap-2">
           {!isBuiltIn && !isCreatingNew && (
@@ -218,7 +284,7 @@ export function EffectsDetail() {
                 disabled={deleting}
               >
                 <Trash2 className="h-3.5 w-3.5" />
-                {deleting ? 'Deleting...' : 'Delete'}
+                {deleting ? t('effects.detail.deleting') : t('common.delete')}
               </Button>
               <Button
                 size="sm"
@@ -227,7 +293,7 @@ export function EffectsDetail() {
                 disabled={saving || workingChain.length === 0}
               >
                 <Save className="h-3.5 w-3.5" />
-                {saving ? 'Saving...' : 'Save'}
+                {saving ? t('effects.detail.saving') : t('common.save')}
               </Button>
             </>
           )}
@@ -239,7 +305,7 @@ export function EffectsDetail() {
               disabled={saving || workingChain.length === 0}
             >
               <Save className="h-3.5 w-3.5" />
-              {saving ? 'Saving...' : 'Save Preset'}
+              {saving ? t('effects.detail.saving') : t('effects.detail.savePreset')}
             </Button>
           )}
           {isBuiltIn && (
@@ -251,51 +317,46 @@ export function EffectsDetail() {
               disabled={saving}
             >
               <Save className="h-3.5 w-3.5" />
-              {saving ? 'Saving...' : 'Save as Custom'}
+              {saving ? t('effects.detail.saving') : t('effects.detail.saveAsCustom')}
             </Button>
           )}
         </div>
       </div>
 
-      {/* Scrollable content */}
       <div className="flex-1 min-h-0 overflow-y-auto space-y-5 pr-1">
-        {/* Name & description */}
         {(isCreatingNew || !isBuiltIn) && (
           <div className="space-y-3">
             <div className="space-y-1.5">
-              <Label className="text-xs">Name</Label>
+              <Label className="text-xs">{t('effects.fields.name')}</Label>
               <Input
                 value={name}
                 onChange={(e) => setName(e.target.value)}
-                placeholder="My preset..."
+                placeholder={t('effects.fields.namePlaceholder')}
                 className="h-9"
               />
             </div>
             <div className="space-y-1.5">
-              <Label className="text-xs">Description</Label>
+              <Label className="text-xs">{t('effects.fields.description')}</Label>
               <Textarea
                 value={description}
                 onChange={(e) => setDescription(e.target.value)}
-                placeholder="Describe what this preset does..."
+                placeholder={t('effects.fields.descriptionPlaceholder')}
                 className="min-h-[60px] resize-none"
               />
             </div>
           </div>
         )}
 
-        {/* Built-in description (read-only) */}
-        {isBuiltIn && preset?.description && (
-          <p className="text-sm text-muted-foreground">{preset.description}</p>
+        {isBuiltIn && presetDescription && (
+          <p className="text-sm text-muted-foreground">{presetDescription}</p>
         )}
 
-        {/* Effects chain editor */}
         <EffectsChainEditor value={workingChain} onChange={setWorkingChain} showPresets={false} />
 
         <Separator />
 
-        {/* Preview section */}
         <div className="space-y-3">
-          <Label className="text-xs">Preview</Label>
+          <Label className="text-xs">{t('effects.preview.label')}</Label>
           <div className="flex items-center gap-2">
             <GenerationPicker
               selectedId={previewGenId}
@@ -312,21 +373,63 @@ export function EffectsDetail() {
               {previewLoading ? (
                 <>
                   <Loader2 className="h-3.5 w-3.5 animate-spin" />
-                  Processing...
+                  {t('effects.preview.processing')}
                 </>
               ) : (
                 <>
                   <Play className="h-3.5 w-3.5" />
-                  Preview
+                  {t('effects.preview.button')}
                 </>
               )}
             </Button>
           </div>
-          <p className="text-[11px] text-muted-foreground">
-            Preview applies effects to the clean version without saving.
-          </p>
+          <p className="text-[11px] text-muted-foreground">{t('effects.preview.hint')}</p>
         </div>
       </div>
+
+      <Dialog open={saveAsDialogOpen} onOpenChange={setSaveAsDialogOpen}>
+        <DialogContent className="sm:max-w-md">
+          <DialogHeader>
+            <DialogTitle>{t('effects.saveAs.title')}</DialogTitle>
+            <DialogDescription>{t('effects.saveAs.description')}</DialogDescription>
+          </DialogHeader>
+          <div className="space-y-3 py-2">
+            <div className="space-y-1.5">
+              <Label className="text-xs">{t('effects.fields.name')}</Label>
+              <Input
+                value={saveAsName}
+                onChange={(e) => setSaveAsName(e.target.value)}
+                placeholder={t('effects.fields.namePlaceholder')}
+                className="h-9"
+                autoFocus
+                onKeyDown={(e) => {
+                  if (e.key === 'Enter' && saveAsName.trim()) {
+                    handleSaveAsConfirm();
+                  }
+                }}
+              />
+            </div>
+            <div className="space-y-1.5">
+              <Label className="text-xs">{t('effects.fields.description')}</Label>
+              <Textarea
+                value={saveAsDescription}
+                onChange={(e) => setSaveAsDescription(e.target.value)}
+                placeholder={t('effects.fields.descriptionPlaceholder')}
+                className="min-h-[60px] resize-none"
+              />
+            </div>
+          </div>
+          <DialogFooter>
+            <Button variant="outline" onClick={() => setSaveAsDialogOpen(false)} disabled={saving}>
+              {t('common.cancel')}
+            </Button>
+            <Button onClick={handleSaveAsConfirm} disabled={saving || !saveAsName.trim()}>
+              <Save className="h-3.5 w-3.5 mr-1.5" />
+              {saving ? t('effects.detail.saving') : t('common.save')}
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
     </div>
   );
 }

app/src/components/EffectsTab/EffectsList.tsx

@@ -1,5 +1,6 @@
 import { useQuery } from '@tanstack/react-query';
 import { Loader2, Plus, Sparkles, Wand2 } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { apiClient } from '@/lib/api/client';
 import type { EffectPresetResponse } from '@/lib/api/types';
@@ -7,6 +8,7 @@ import { cn } from '@/lib/utils/cn';
 import { useEffectsStore } from '@/stores/effectsStore';
 
 export function EffectsList() {
+  const { t } = useTranslation();
   const selectedPresetId = useEffectsStore((s) => s.selectedPresetId);
   const setSelectedPresetId = useEffectsStore((s) => s.setSelectedPresetId);
   const setWorkingChain = useEffectsStore((s) => s.setWorkingChain);
@@ -44,10 +46,10 @@ export function EffectsList() {
     <div className="flex flex-col h-full min-h-0">
       {/* Header */}
       <div className="flex items-center justify-between mb-4">
-        <h2 className="text-lg font-semibold">Effects</h2>
+        <h2 className="text-lg font-semibold">{t('effects.title')}</h2>
         <Button variant="outline" size="sm" className="h-8 gap-1.5" onClick={handleCreateNew}>
           <Plus className="h-3.5 w-3.5" />
-          New Preset
+          {t('effects.newPreset')}
         </Button>
       </div>
 
@@ -57,7 +59,7 @@ export function EffectsList() {
         {builtIn.length > 0 && (
           <div>
             <div className="text-[11px] text-muted-foreground font-medium uppercase tracking-wider mb-2 px-1">
-              Built-in
+              {t('effects.sections.builtin')}
             </div>
             <div className="space-y-1.5">
               {builtIn.map((preset) => (
@@ -76,7 +78,7 @@ export function EffectsList() {
         {userPresets.length > 0 && (
           <div>
             <div className="text-[11px] text-muted-foreground font-medium uppercase tracking-wider mb-2 px-1">
-              Custom
+              {t('effects.sections.custom')}
             </div>
             <div className="space-y-1.5">
               {userPresets.map((preset) => (
@@ -95,16 +97,14 @@ export function EffectsList() {
         {isCreatingNew && (
           <div>
             <div className="text-[11px] text-muted-foreground font-medium uppercase tracking-wider mb-2 px-1">
-              New
+              {t('effects.sections.new')}
             </div>
             <div className="rounded-xl border-2 border-accent/40 bg-accent/5 p-3">
               <div className="flex items-center gap-2">
                 <Sparkles className="h-4 w-4 text-accent" />
-                <span className="text-sm font-medium">Unsaved Preset</span>
+                <span className="text-sm font-medium">{t('effects.unsaved.title')}</span>
               </div>
-              <p className="text-xs text-muted-foreground mt-1">
-                Configure effects in the panel on the right.
-              </p>
+              <p className="text-xs text-muted-foreground mt-1">{t('effects.unsaved.hint')}</p>
             </div>
           </div>
         )}
@@ -122,7 +122,16 @@ function PresetCard({
   isSelected: boolean;
   onSelect: () => void;
 }) {
+  const { t } = useTranslation();
   const effectCount = preset.effects_chain.length;
+  const name = preset.is_builtin
+    ? t(`effects.builtinPresets.${preset.name}.name`, { defaultValue: preset.name })
+    : preset.name;
+  const description = preset.is_builtin
+    ? t(`effects.builtinPresets.${preset.name}.description`, {
+        defaultValue: preset.description ?? '',
+      })
+    : preset.description;
 
   return (
     <button
@@ -139,19 +148,19 @@ function PresetCard({
         <Wand2
           className={cn('h-4 w-4 shrink-0', isSelected ? 'text-accent' : 'text-muted-foreground')}
         />
-        <span className="text-sm font-medium truncate">{preset.name}</span>
+        <span className="text-sm font-medium truncate">{name}</span>
         {preset.is_builtin && (
           <span className="text-[10px] bg-muted text-muted-foreground px-1.5 py-0.5 rounded-full shrink-0">
-            built-in
+            {t('effects.badge.builtin')}
           </span>
         )}
       </div>
       <p className="text-xs text-muted-foreground mt-1 line-clamp-1 pl-6">
-        {preset.description || 'No description'}
+        {description || t('effects.noDescription')}
       </p>
       <div className="flex items-center gap-2 mt-1.5 pl-6">
         <span className="text-[10px] text-muted-foreground">
-          {effectCount} effect{effectCount !== 1 ? 's' : ''}
+          {t('effects.effectCount', { count: effectCount })}
         </span>
         <span className="text-[10px] text-muted-foreground/50">
           {preset.effects_chain

app/src/components/EffectsTab/EffectsTab.tsx

@@ -1,20 +1,20 @@
-import {EffectsDetail} from "./EffectsDetail";
-import {EffectsList} from "./EffectsList";
+import { EffectsDetail } from './EffectsDetail';
+import { EffectsList } from './EffectsList';
 
 export function EffectsTab() {
-	return (
-		<div className="flex flex-col h-full min-h-0 overflow-hidden">
-			<div className="flex-1 min-h-0 flex gap-6 overflow-hidden">
-				{/* Left - Presets list */}
-				<div className="w-full max-w-[360px] shrink-0 flex flex-col min-h-0">
-					<EffectsList />
-				</div>
+  return (
+    <div className="flex flex-col h-full min-h-0 overflow-hidden">
+      <div className="flex-1 min-h-0 flex gap-6 overflow-hidden">
+        {/* Left - Presets list */}
+        <div className="w-full max-w-[360px] shrink-0 flex flex-col min-h-0">
+          <EffectsList />
+        </div>
 
-				{/* Right - Detail / editor */}
-				<div className="flex-1 min-h-0 flex flex-col">
-					<EffectsDetail />
-				</div>
-			</div>
-		</div>
-	);
+        {/* Right - Detail / editor */}
+        <div className="flex-1 min-h-0 flex flex-col">
+          <EffectsDetail />
+        </div>
+      </div>
+    </div>
+  );
 }

app/src/components/Generation/EngineModelSelector.tsx

@@ -0,0 +1,170 @@
+import { useEffect } from 'react';
+import type { UseFormReturn } from 'react-hook-form';
+import { FormControl } from '@/components/ui/form';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '@/components/ui/select';
+import type { VoiceProfileResponse } from '@/lib/api/types';
+import { getLanguageOptionsForEngine } from '@/lib/constants/languages';
+import type { GenerationFormValues } from '@/lib/hooks/useGenerationForm';
+
+/**
+ * Engine/model options and their display metadata.
+ * Adding a new engine means adding one entry here.
+ */
+const ENGINE_OPTIONS = [
+  { value: 'qwen:1.7B', label: 'Qwen3-TTS 1.7B', engine: 'qwen' },
+  { value: 'qwen:0.6B', label: 'Qwen3-TTS 0.6B', engine: 'qwen' },
+  { value: 'qwen_custom_voice:1.7B', label: 'Qwen CustomVoice 1.7B', engine: 'qwen_custom_voice' },
+  { value: 'qwen_custom_voice:0.6B', label: 'Qwen CustomVoice 0.6B', engine: 'qwen_custom_voice' },
+  { value: 'luxtts', label: 'LuxTTS', engine: 'luxtts' },
+  { value: 'chatterbox', label: 'Chatterbox', engine: 'chatterbox' },
+  { value: 'chatterbox_turbo', label: 'Chatterbox Turbo', engine: 'chatterbox_turbo' },
+  { value: 'tada:1B', label: 'TADA 1B', engine: 'tada' },
+  { value: 'tada:3B', label: 'TADA 3B Multilingual', engine: 'tada' },
+  { value: 'kokoro', label: 'Kokoro 82M', engine: 'kokoro' },
+] as const;
+
+const ENGINE_DESCRIPTIONS: Record<string, string> = {
+  qwen: 'Multi-language, two sizes',
+  qwen_custom_voice: '9 preset voices, instruct control',
+  luxtts: 'Fast, English-focused',
+  chatterbox: '23 languages, incl. Hebrew',
+  chatterbox_turbo: 'English, [laugh] [cough] tags',
+  tada: 'HumeAI, 700s+ coherent audio',
+  kokoro: '82M params, CPU realtime, 8 langs',
+};
+
+/** Engines that only support English and should force language to 'en' on select. */
+const ENGLISH_ONLY_ENGINES = new Set(['luxtts', 'chatterbox_turbo']);
+
+/** Engines that support cloned (reference audio) profiles. */
+const CLONING_ENGINES = new Set(['qwen', 'luxtts', 'chatterbox', 'chatterbox_turbo', 'tada']);
+
+function getAvailableOptions(selectedProfile?: VoiceProfileResponse | null) {
+  if (!selectedProfile) return ENGINE_OPTIONS;
+  return ENGINE_OPTIONS.filter((opt) => isProfileCompatibleWithEngine(selectedProfile, opt.engine));
+}
+
+function getSelectValue(engine: string, modelSize?: string): string {
+  if (engine === 'qwen') return `qwen:${modelSize || '1.7B'}`;
+  if (engine === 'qwen_custom_voice') return `qwen_custom_voice:${modelSize || '1.7B'}`;
+  if (engine === 'tada') return `tada:${modelSize || '1B'}`;
+  return engine;
+}
+
+export function applyEngineSelection(form: UseFormReturn<GenerationFormValues>, value: string) {
+  if (value.startsWith('qwen_custom_voice:')) {
+    const [, modelSize] = value.split(':');
+    form.setValue('engine', 'qwen_custom_voice');
+    form.setValue('modelSize', modelSize as '1.7B' | '0.6B');
+    const currentLang = form.getValues('language');
+    const available = getLanguageOptionsForEngine('qwen_custom_voice');
+    if (!available.some((l) => l.value === currentLang)) {
+      form.setValue('language', available[0]?.value ?? 'en');
+    }
+  } else if (value.startsWith('qwen:')) {
+    const [, modelSize] = value.split(':');
+    form.setValue('engine', 'qwen');
+    form.setValue('modelSize', modelSize as '1.7B' | '0.6B');
+    // Validate language is supported by Qwen
+    const currentLang = form.getValues('language');
+    const available = getLanguageOptionsForEngine('qwen');
+    if (!available.some((l) => l.value === currentLang)) {
+      form.setValue('language', available[0]?.value ?? 'en');
+    }
+  } else if (value.startsWith('tada:')) {
+    const [, modelSize] = value.split(':');
+    form.setValue('engine', 'tada');
+    form.setValue('modelSize', modelSize as '1B' | '3B');
+    // TADA 1B is English-only; 3B is multilingual
+    if (modelSize === '1B') {
+      form.setValue('language', 'en');
+    } else {
+      const currentLang = form.getValues('language');
+      const available = getLanguageOptionsForEngine('tada');
+      if (!available.some((l) => l.value === currentLang)) {
+        form.setValue('language', available[0]?.value ?? 'en');
+      }
+    }
+  } else {
+    form.setValue('engine', value as GenerationFormValues['engine']);
+    form.setValue('modelSize', undefined as unknown as '1.7B' | '0.6B');
+    if (ENGLISH_ONLY_ENGINES.has(value)) {
+      form.setValue('language', 'en');
+    } else {
+      // If current language isn't supported by the new engine, reset to first available
+      const currentLang = form.getValues('language');
+      const available = getLanguageOptionsForEngine(value);
+      if (!available.some((l) => l.value === currentLang)) {
+        form.setValue('language', available[0]?.value ?? 'en');
+      }
+    }
+  }
+}
+
+interface EngineModelSelectorProps {
+  form: UseFormReturn<GenerationFormValues>;
+  compact?: boolean;
+  selectedProfile?: VoiceProfileResponse | null;
+}
+
+export function EngineModelSelector({ form, compact, selectedProfile }: EngineModelSelectorProps) {
+  const engine = form.watch('engine') || 'qwen';
+  const modelSize = form.watch('modelSize');
+  const selectValue = getSelectValue(engine, modelSize);
+  const availableOptions = getAvailableOptions(selectedProfile);
+
+  const currentEngineAvailable = availableOptions.some((opt) => opt.value === selectValue);
+
+  useEffect(() => {
+    if (!currentEngineAvailable && availableOptions.length > 0) {
+      applyEngineSelection(form, availableOptions[0].value);
+    }
+  }, [availableOptions, currentEngineAvailable, form]);
+
+  const itemClass = compact ? 'text-xs text-muted-foreground' : undefined;
+  const triggerClass = compact
+    ? 'h-8 text-xs bg-card border-border rounded-full hover:bg-background/50 transition-all'
+    : undefined;
+
+  return (
+    <Select value={selectValue} onValueChange={(v) => applyEngineSelection(form, v)}>
+      <FormControl>
+        <SelectTrigger className={triggerClass}>
+          <SelectValue />
+        </SelectTrigger>
+      </FormControl>
+      <SelectContent>
+        {availableOptions.map((opt) => (
+          <SelectItem key={opt.value} value={opt.value} className={itemClass}>
+            {opt.label}
+          </SelectItem>
+        ))}
+      </SelectContent>
+    </Select>
+  );
+}
+
+/** Returns a human-readable description for the currently selected engine. */
+export function getEngineDescription(engine: string): string {
+  return ENGINE_DESCRIPTIONS[engine] ?? '';
+}
+
+/**
+ * Check if a profile is compatible with the currently selected engine.
+ * Useful for UI hints.
+ */
+export function isProfileCompatibleWithEngine(
+  profile: VoiceProfileResponse,
+  engine: string,
+): boolean {
+  const voiceType = profile.voice_type || 'cloned';
+  if (voiceType === 'preset') return profile.preset_engine === engine;
+  if (voiceType === 'cloned') return CLONING_ENGINES.has(engine);
+  return true; // designed — future
+}

app/src/components/Generation/FloatingGenerateBox.tsx

@@ -1,8 +1,9 @@
+import { useQuery } from '@tanstack/react-query';
 import { useMatchRoute } from '@tanstack/react-router';
 import { AnimatePresence, motion } from 'framer-motion';
 import { Loader2, SlidersHorizontal, Sparkles } from 'lucide-react';
 import { useEffect, useRef, useState } from 'react';
-import { EffectsChainEditor } from '@/components/Effects/EffectsChainEditor';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { Form, FormControl, FormField, FormItem, FormMessage } from '@/components/ui/form';
 import {
@@ -13,7 +14,7 @@ import {
   SelectValue,
 } from '@/components/ui/select';
 import { Textarea } from '@/components/ui/textarea';
-import type { EffectConfig } from '@/lib/api/types';
+import { apiClient } from '@/lib/api/client';
 import { getLanguageOptionsForEngine, type LanguageCode } from '@/lib/constants/languages';
 import { useGenerationForm } from '@/lib/hooks/useGenerationForm';
 import { useProfile, useProfiles } from '@/lib/hooks/useProfiles';
@@ -22,6 +23,7 @@ import { cn } from '@/lib/utils/cn';
 import { useGenerationStore } from '@/stores/generationStore';
 import { useStoryStore } from '@/stores/storyStore';
 import { useUIStore } from '@/stores/uiStore';
+import { EngineModelSelector } from './EngineModelSelector';
 import { ParalinguisticInput } from './ParalinguisticInput';
 
 interface FloatingGenerateBoxProps {
@@ -33,13 +35,15 @@ export function FloatingGenerateBox({
   isPlayerOpen = false,
   showVoiceSelector = false,
 }: FloatingGenerateBoxProps) {
+  const { t } = useTranslation();
   const selectedProfileId = useUIStore((state) => state.selectedProfileId);
   const setSelectedProfileId = useUIStore((state) => state.setSelectedProfileId);
+  const setSelectedEngine = useUIStore((state) => state.setSelectedEngine);
   const { data: selectedProfile } = useProfile(selectedProfileId || '');
   const { data: profiles } = useProfiles();
   const [isExpanded, setIsExpanded] = useState(false);
-  const [isInstructMode, setIsInstructMode] = useState(false);
-  const [effectsChain, setEffectsChain] = useState<EffectConfig[]>([]);
+  const [isInstructExpanded, setIsInstructExpanded] = useState(false);
+  const [selectedPresetId, setSelectedPresetId] = useState<string | null>(null);
   const containerRef = useRef<HTMLDivElement>(null);
   const textareaRef = useRef<HTMLTextAreaElement | null>(null);
   const matchRoute = useMatchRoute();
@@ -49,18 +53,33 @@ export function FloatingGenerateBox({
   const { data: currentStory } = useStory(selectedStoryId);
   const addPendingStoryAdd = useGenerationStore((s) => s.addPendingStoryAdd);
 
+  // Fetch effect presets for the dropdown
+  const { data: effectPresets } = useQuery({
+    queryKey: ['effectPresets'],
+    queryFn: () => apiClient.listEffectPresets(),
+  });
+
   // Calculate if track editor is visible (on stories route with items)
   const hasTrackEditor = isStoriesRoute && currentStory && currentStory.items.length > 0;
 
   const { form, handleSubmit, isPending } = useGenerationForm({
     onSuccess: async (generationId) => {
       setIsExpanded(false);
-      // Defer the story add until TTS completes — useGenerationProgress handles it
+      // Defer the story add until TTS completes -- useGenerationProgress handles it
       if (isStoriesRoute && selectedStoryId && generationId) {
         addPendingStoryAdd(generationId, selectedStoryId);
       }
     },
-    getEffectsChain: () => (effectsChain.length > 0 ? effectsChain : undefined),
+    getEffectsChain: () => {
+      if (!selectedPresetId) return undefined;
+      // Profile's own effects chain (no matching preset)
+      if (selectedPresetId === '_profile') {
+        return selectedProfile?.effects_chain ?? undefined;
+      }
+      if (!effectPresets) return undefined;
+      const preset = effectPresets.find((p) => p.id === selectedPresetId);
+      return preset?.effects_chain;
+    },
   });
 
   // Click away handler to collapse the box
@@ -100,12 +119,63 @@ export function FloatingGenerateBox({
     }
   }, [selectedProfileId, profiles, setSelectedProfileId]);
 
-  // Sync generation form language with selected profile's language
+  // Sync engine selection to global store so ProfileList can filter
+  const watchedEngine = form.watch('engine');
+  useEffect(() => {
+    if (watchedEngine) {
+      setSelectedEngine(watchedEngine);
+    }
+  }, [watchedEngine, setSelectedEngine]);
+
+  // Sync generation form language, engine, and effects with selected profile
+  type EngineValue =
+    | 'qwen'
+    | 'luxtts'
+    | 'chatterbox'
+    | 'chatterbox_turbo'
+    | 'tada'
+    | 'kokoro'
+    | 'qwen_custom_voice';
   useEffect(() => {
     if (selectedProfile?.language) {
       form.setValue('language', selectedProfile.language as LanguageCode);
     }
-  }, [selectedProfile, form]);
+    // Auto-switch engine to match the profile
+    const engine = selectedProfile?.default_engine ?? selectedProfile?.preset_engine;
+    if (engine) {
+      form.setValue('engine', engine as EngineValue);
+    } else if (selectedProfile && selectedProfile.voice_type !== 'preset') {
+      // Cloned/designed profile with no default — ensure a compatible (non-preset) engine
+      const currentEngine = form.getValues('engine');
+      const presetEngines = new Set(['kokoro', 'qwen_custom_voice']);
+      if (currentEngine && presetEngines.has(currentEngine)) {
+        form.setValue('engine', 'qwen');
+      }
+    }
+    // Pre-fill effects from profile defaults
+    if (
+      selectedProfile?.effects_chain &&
+      selectedProfile.effects_chain.length > 0 &&
+      effectPresets
+    ) {
+      // Try to match against a known preset
+      const profileChainJson = JSON.stringify(selectedProfile.effects_chain);
+      const matchingPreset = effectPresets.find(
+        (p) => JSON.stringify(p.effects_chain) === profileChainJson,
+      );
+      if (matchingPreset) {
+        setSelectedPresetId(matchingPreset.id);
+      } else {
+        // No matching preset — use special value to pass profile chain directly
+        setSelectedPresetId('_profile');
+      }
+    } else if (
+      selectedProfile &&
+      (!selectedProfile.effects_chain || selectedProfile.effects_chain.length === 0)
+    ) {
+      setSelectedPresetId(null);
+    }
+  }, [selectedProfile, effectPresets, form]);
 
   // Auto-resize textarea based on content (only when expanded)
   useEffect(() => {
@@ -188,111 +258,61 @@ export function FloatingGenerateBox({
         <Form {...form}>
           <form onSubmit={form.handleSubmit(onSubmit)}>
             <div className="flex gap-2">
-              <motion.div
-                className={cn('flex-1', isExpanded && 'mr-12')}
-                transition={{ duration: 0.3, ease: 'easeOut' }}
-              >
-                {/* Text field - hidden when in instruct mode */}
-                <div style={{ display: isInstructMode ? 'none' : 'block' }}>
-                  <FormField
-                    control={form.control}
-                    name="text"
-                    render={({ field }) => (
-                      <FormItem>
-                        <FormControl>
-                          <motion.div
-                            animate={{
-                              height: isExpanded ? 'auto' : '32px',
-                            }}
-                            transition={{ duration: 0.15, ease: 'easeOut' }}
-                            style={{ overflow: 'hidden' }}
-                          >
-                            {form.watch('engine') === 'chatterbox_turbo' ? (
-                              <ParalinguisticInput
-                                value={field.value}
-                                onChange={field.onChange}
-                                placeholder={
-                                  isStoriesRoute && currentStory
-                                    ? `Generate speech for "${currentStory.name}"... (type / for effects)`
-                                    : selectedProfile
-                                      ? `Type / for effects like [laugh], [sigh]...`
-                                      : 'Select a voice profile above...'
-                                }
-                                className="px-3 py-2 resize-none bg-transparent border-none focus-visible:ring-0 focus-visible:ring-offset-0 focus:outline-none focus:ring-0 outline-none ring-0 rounded-2xl text-sm w-full"
-                                style={{
-                                  minHeight: isExpanded ? '100px' : '32px',
-                                  maxHeight: '300px',
-                                  overflowY: 'auto',
-                                }}
-                                disabled={!selectedProfileId}
-                                onClick={() => setIsExpanded(true)}
-                                onFocus={() => setIsExpanded(true)}
-                              />
-                            ) : (
-                              <Textarea
-                                {...field}
-                                ref={(node: HTMLTextAreaElement | null) => {
-                                  // Store ref for auto-resize (only for active field)
-                                  if (!isInstructMode) {
-                                    textareaRef.current = node;
-                                  }
-                                  // Forward ref to react-hook-form
-                                  if (typeof field.ref === 'function') {
-                                    field.ref(node);
-                                  }
-                                }}
-                                placeholder={
-                                  isStoriesRoute && currentStory
-                                    ? `Generate speech for "${currentStory.name}"...`
-                                    : selectedProfile
-                                      ? `Generate speech using ${selectedProfile.name}...`
-                                      : 'Select a voice profile above...'
-                                }
-                                className="resize-none bg-transparent border-none focus-visible:ring-0 focus-visible:ring-offset-0 focus:outline-none focus:ring-0 outline-none ring-0 rounded-2xl text-sm placeholder:text-muted-foreground/60 w-full"
-                                style={{
-                                  minHeight: isExpanded ? '100px' : '32px',
-                                  maxHeight: '300px',
-                                }}
-                                disabled={!selectedProfileId}
-                                onClick={() => setIsExpanded(true)}
-                                onFocus={() => setIsExpanded(true)}
-                              />
-                            )}
-                          </motion.div>
-                        </FormControl>
-                        <FormMessage className="text-xs" />
-                      </FormItem>
-                    )}
-                  />
-                </div>
-                {/* Instruct field - hidden when in text mode */}
-                <div style={{ display: isInstructMode ? 'block' : 'none' }}>
-                  <FormField
-                    control={form.control}
-                    name="instruct"
-                    render={({ field }) => (
-                      <FormItem>
-                        <FormControl>
-                          <motion.div
-                            animate={{
-                              height: isExpanded ? 'auto' : '32px',
-                            }}
-                            transition={{ duration: 0.15, ease: 'easeOut' }}
-                            style={{ overflow: 'hidden' }}
-                          >
+              <motion.div className="flex-1" transition={{ duration: 0.3, ease: 'easeOut' }}>
+                <FormField
+                  control={form.control}
+                  name="text"
+                  render={({ field }) => (
+                    <FormItem>
+                      <FormControl>
+                        <motion.div
+                          animate={{
+                            height: isExpanded ? 'auto' : '32px',
+                          }}
+                          transition={{ duration: 0.15, ease: 'easeOut' }}
+                          style={{ overflow: 'hidden' }}
+                        >
+                          {form.watch('engine') === 'chatterbox_turbo' ? (
+                            <ParalinguisticInput
+                              value={field.value}
+                              onChange={field.onChange}
+                              placeholder={
+                                isStoriesRoute && currentStory
+                                  ? t('generation.placeholder.storyWithEffects', {
+                                      name: currentStory.name,
+                                    })
+                                  : selectedProfile
+                                    ? t('generation.placeholder.effectsHint')
+                                    : t('generation.placeholder.selectVoice')
+                              }
+                              className="px-3 py-2 resize-none bg-transparent border-none focus-visible:ring-0 focus-visible:ring-offset-0 focus:outline-none focus:ring-0 outline-none ring-0 rounded-2xl text-sm w-full"
+                              style={{
+                                minHeight: isExpanded ? '100px' : '32px',
+                                maxHeight: '300px',
+                                overflowY: 'auto',
+                              }}
+                              disabled={!selectedProfileId}
+                              onClick={() => setIsExpanded(true)}
+                              onFocus={() => setIsExpanded(true)}
+                            />
+                          ) : (
                             <Textarea
                               {...field}
                               ref={(node: HTMLTextAreaElement | null) => {
-                                // Store ref for auto-resize (only for active field)
-                                if (isInstructMode) {
-                                  textareaRef.current = node;
-                                }
-                                // Forward ref to react-hook-form
+                                textareaRef.current = node;
                                 if (typeof field.ref === 'function') {
                                   field.ref(node);
                                 }
                               }}
-                              placeholder="e.g. very happy and excited"
+                              placeholder={
+                                isStoriesRoute && currentStory
+                                  ? t('generation.placeholder.story', { name: currentStory.name })
+                                  : selectedProfile
+                                    ? t('generation.placeholder.profile', {
+                                        name: selectedProfile.name,
+                                      })
+                                    : t('generation.placeholder.selectVoice')
+                              }
                               className="resize-none bg-transparent border-none focus-visible:ring-0 focus-visible:ring-offset-0 focus:outline-none focus:ring-0 outline-none ring-0 rounded-2xl text-sm placeholder:text-muted-foreground/60 w-full"
                               style={{
                                 minHeight: isExpanded ? '100px' : '32px',
@@ -302,13 +322,13 @@ export function FloatingGenerateBox({
                               onClick={() => setIsExpanded(true)}
                               onFocus={() => setIsExpanded(true)}
                             />
-                          </motion.div>
-                        </FormControl>
-                        <FormMessage className="text-xs" />
-                      </FormItem>
-                    )}
-                  />
-                </div>
+                          )}
+                        </motion.div>
+                      </FormControl>
+                      <FormMessage className="text-xs" />
+                    </FormItem>
+                  )}
+                />
               </motion.div>
 
               <div className="relative shrink-0">
@@ -320,10 +340,10 @@ export function FloatingGenerateBox({
                     size="icon"
                     aria-label={
                       isPending
-                        ? 'Generating...'
+                        ? t('generation.button.generating')
                         : !selectedProfileId
-                          ? 'Select a voice profile first'
-                          : 'Generate speech'
+                          ? t('generation.button.selectFirst')
+                          : t('generation.button.generate')
                     }
                   >
                     {isPending ? (
@@ -334,14 +354,16 @@ export function FloatingGenerateBox({
                   </Button>
                   <span className="pointer-events-none absolute bottom-full left-1/2 -translate-x-1/2 mb-2 whitespace-nowrap rounded-md bg-popover px-3 py-1.5 text-xs text-popover-foreground border border-border opacity-0 transition-opacity group-hover:opacity-100 z-[9999]">
                     {isPending
-                      ? 'Generating...'
+                      ? t('generation.button.generating')
                       : !selectedProfileId
-                        ? 'Select a voice profile first'
-                        : 'Generate speech'}
+                        ? t('generation.button.selectFirst')
+                        : t('generation.button.generate')}
                   </span>
                 </div>
+
+                {/* Instruct toggle — only for Qwen CustomVoice, which actually honors the kwarg */}
                 <AnimatePresence>
-                  {isExpanded && form.watch('engine') === 'qwen' && (
+                  {isExpanded && form.watch('engine') === 'qwen_custom_voice' && (
                     <motion.div
                       initial={{ opacity: 0, scale: 0.8 }}
                       animate={{ opacity: 1, scale: 1 }}
@@ -354,23 +376,24 @@ export function FloatingGenerateBox({
                           type="button"
                           variant="ghost"
                           size="icon"
-                          onClick={() => setIsInstructMode(!isInstructMode)}
+                          onClick={() => setIsInstructExpanded((prev) => !prev)}
                           className={cn(
                             'h-10 w-10 rounded-full transition-all duration-200',
-                            isInstructMode
+                            isInstructExpanded
                               ? 'bg-accent text-accent-foreground border border-accent hover:bg-accent/90'
-                              : effectsChain.length > 0
-                                ? 'bg-accent/50 text-accent-foreground border border-accent/50 hover:bg-accent/70'
-                                : 'bg-card border border-border hover:bg-background/50',
+                              : 'bg-card border border-border hover:bg-background/50',
                           )}
                           aria-label={
-                            isInstructMode ? 'Fine tune instructions, on' : 'Fine tune instructions'
+                            isInstructExpanded
+                              ? t('generation.instruct.hide')
+                              : t('generation.instruct.show')
                           }
+                          aria-pressed={isInstructExpanded}
                         >
                           <SlidersHorizontal className="h-4 w-4" />
                         </Button>
                         <span className="pointer-events-none absolute bottom-full left-1/2 -translate-x-1/2 mb-2 whitespace-nowrap rounded-md bg-popover px-3 py-1.5 text-xs text-popover-foreground border border-border opacity-0 transition-opacity group-hover:opacity-100 z-[9999]">
-                          Fine tune instructions & effects
+                          {t('generation.instruct.tooltip')}
                         </span>
                       </div>
                     </motion.div>
@@ -379,19 +402,34 @@ export function FloatingGenerateBox({
               </div>
             </div>
 
-            {/* Effects chain editor panel - shown alongside instruct */}
+            {/* Additive instruct textarea — shown below main text when toggle is on and engine supports it */}
             <AnimatePresence>
-              {isExpanded && isInstructMode && (
+              {isInstructExpanded && form.watch('engine') === 'qwen_custom_voice' && (
                 <motion.div
-                  initial={{ height: 0, opacity: 0 }}
-                  animate={{ height: 'auto', opacity: 1 }}
-                  exit={{ height: 0, opacity: 0 }}
-                  transition={{ duration: 0.2 }}
-                  className="overflow-hidden mt-2"
+                  initial={{ opacity: 0, height: 0 }}
+                  animate={{ opacity: 1, height: 'auto' }}
+                  exit={{ opacity: 0, height: 0 }}
+                  transition={{ duration: 0.2, ease: 'easeOut' }}
+                  className="overflow-hidden"
                 >
-                  <div className="border-t border-border/50 pt-2 pb-1">
-                    <EffectsChainEditor value={effectsChain} onChange={setEffectsChain} compact />
-                  </div>
+                  <FormField
+                    control={form.control}
+                    name="instruct"
+                    render={({ field }) => (
+                      <FormItem className="mt-2">
+                        <FormControl>
+                          <Textarea
+                            {...field}
+                            placeholder={t('generation.instruct.placeholder')}
+                            className="resize-none bg-transparent border border-accent/20 focus-visible:ring-1 focus-visible:ring-accent/40 rounded-2xl text-sm placeholder:text-muted-foreground/60 w-full px-3 py-2"
+                            style={{ minHeight: '60px', maxHeight: '160px' }}
+                            maxLength={500}
+                          />
+                        </FormControl>
+                        <FormMessage className="text-xs" />
+                      </FormItem>
+                    )}
+                  />
                 </motion.div>
               )}
             </AnimatePresence>
@@ -412,7 +450,7 @@ export function FloatingGenerateBox({
                         onValueChange={(value) => setSelectedProfileId(value || null)}
                       >
                         <SelectTrigger className="h-8 text-xs bg-card border-border rounded-full hover:bg-background/50 transition-all w-full">
-                          <SelectValue placeholder="Select a voice..." />
+                          <SelectValue placeholder={t('generation.voiceSelector.placeholder')} />
                         </SelectTrigger>
                         <SelectContent>
                           {profiles?.map((profile) => (
@@ -454,57 +492,35 @@ export function FloatingGenerateBox({
                     }}
                   />
 
+                  <FormItem className="flex-1 space-y-0">
+                    <EngineModelSelector form={form} compact />
+                  </FormItem>
+
                   <FormItem className="flex-1 space-y-0">
                     <Select
-                      value={
-                        form.watch('engine') === 'luxtts'
-                          ? 'luxtts'
-                          : form.watch('engine') === 'chatterbox'
-                            ? 'chatterbox'
-                            : form.watch('engine') === 'chatterbox_turbo'
-                              ? 'chatterbox_turbo'
-                              : `qwen:${form.watch('modelSize') || '1.7B'}`
+                      value={selectedPresetId || 'none'}
+                      onValueChange={(value) =>
+                        setSelectedPresetId(value === 'none' ? null : value)
                       }
-                      onValueChange={(value) => {
-                        if (value === 'luxtts') {
-                          form.setValue('engine', 'luxtts');
-                          form.setValue('language', 'en');
-                        } else if (value === 'chatterbox') {
-                          form.setValue('engine', 'chatterbox');
-                        } else if (value === 'chatterbox_turbo') {
-                          form.setValue('engine', 'chatterbox_turbo');
-                          form.setValue('language', 'en');
-                        } else {
-                          const [, modelSize] = value.split(':');
-                          form.setValue('engine', 'qwen');
-                          form.setValue('modelSize', modelSize as '1.7B' | '0.6B');
-                        }
-                      }}
                     >
-                      <FormControl>
-                        <SelectTrigger className="h-8 text-xs bg-card border-border rounded-full hover:bg-background/50 transition-all">
-                          <SelectValue />
-                        </SelectTrigger>
-                      </FormControl>
+                      <SelectTrigger className="h-8 text-xs bg-card border-border rounded-full hover:bg-background/50 transition-all">
+                        <SelectValue placeholder={t('generation.effects.none')} />
+                      </SelectTrigger>
                       <SelectContent>
-                        <SelectItem value="qwen:1.7B" className="text-xs text-muted-foreground">
-                          Qwen3-TTS 1.7B
-                        </SelectItem>
-                        <SelectItem value="qwen:0.6B" className="text-xs text-muted-foreground">
-                          Qwen3-TTS 0.6B
-                        </SelectItem>
-                        <SelectItem value="luxtts" className="text-xs text-muted-foreground">
-                          LuxTTS
-                        </SelectItem>
-                        <SelectItem value="chatterbox" className="text-xs text-muted-foreground">
-                          Chatterbox
-                        </SelectItem>
-                        <SelectItem
-                          value="chatterbox_turbo"
-                          className="text-xs text-muted-foreground"
-                        >
-                          Chatterbox Turbo
+                        <SelectItem value="none" className="text-xs">
+                          {t('generation.effects.none')}
                         </SelectItem>
+                        {selectedProfile?.effects_chain &&
+                          selectedProfile.effects_chain.length > 0 && (
+                            <SelectItem value="_profile" className="text-xs">
+                              {t('generation.effects.profileDefault')}
+                            </SelectItem>
+                          )}
+                        {effectPresets?.map((preset) => (
+                          <SelectItem key={preset.id} value={preset.id} className="text-xs">
+                            {preset.name}
+                          </SelectItem>
+                        ))}
                       </SelectContent>
                     </Select>
                   </FormItem>

app/src/components/Generation/GenerationForm.tsx

@@ -1,4 +1,5 @@
 import { Loader2, Mic } from 'lucide-react';
+import { useEffect } from 'react';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import {
@@ -19,18 +20,45 @@ import {
   SelectValue,
 } from '@/components/ui/select';
 import { Textarea } from '@/components/ui/textarea';
-import { getLanguageOptionsForEngine } from '@/lib/constants/languages';
+import { getLanguageOptionsForEngine, type LanguageCode } from '@/lib/constants/languages';
 import { useGenerationForm } from '@/lib/hooks/useGenerationForm';
 import { useProfile } from '@/lib/hooks/useProfiles';
 import { useUIStore } from '@/stores/uiStore';
+import {
+  applyEngineSelection,
+  EngineModelSelector,
+  getEngineDescription,
+} from './EngineModelSelector';
 import { ParalinguisticInput } from './ParalinguisticInput';
 
+function getEngineSelectValue(engine: string): string {
+  if (engine === 'qwen') return 'qwen:1.7B';
+  if (engine === 'qwen_custom_voice') return 'qwen_custom_voice:1.7B';
+  if (engine === 'tada') return 'tada:1B';
+  return engine;
+}
+
 export function GenerationForm() {
   const selectedProfileId = useUIStore((state) => state.selectedProfileId);
   const { data: selectedProfile } = useProfile(selectedProfileId || '');
 
   const { form, handleSubmit, isPending } = useGenerationForm();
 
+  useEffect(() => {
+    if (!selectedProfile) {
+      return;
+    }
+
+    if (selectedProfile.language) {
+      form.setValue('language', selectedProfile.language as LanguageCode);
+    }
+
+    const preferredEngine = selectedProfile.default_engine || selectedProfile.preset_engine;
+    if (preferredEngine) {
+      applyEngineSelection(form, getEngineSelectValue(preferredEngine));
+    }
+  }, [form, selectedProfile]);
+
   async function onSubmit(data: Parameters<typeof handleSubmit>[0]) {
     await handleSubmit(data, selectedProfileId);
   }
@@ -90,7 +118,7 @@ export function GenerationForm() {
               )}
             />
 
-            {form.watch('engine') === 'qwen' && (
+            {form.watch('engine') === 'qwen_custom_voice' && (
               <FormField
                 control={form.control}
                 name="instruct"
@@ -117,53 +145,9 @@ export function GenerationForm() {
             <div className="grid gap-4 md:grid-cols-3">
               <FormItem>
                 <FormLabel>Model</FormLabel>
-                <Select
-                  value={
-                    form.watch('engine') === 'luxtts'
-                      ? 'luxtts'
-                      : form.watch('engine') === 'chatterbox'
-                        ? 'chatterbox'
-                        : form.watch('engine') === 'chatterbox_turbo'
-                          ? 'chatterbox_turbo'
-                          : `qwen:${form.watch('modelSize') || '1.7B'}`
-                  }
-                  onValueChange={(value) => {
-                    if (value === 'luxtts') {
-                      form.setValue('engine', 'luxtts');
-                      form.setValue('language', 'en');
-                    } else if (value === 'chatterbox') {
-                      form.setValue('engine', 'chatterbox');
-                    } else if (value === 'chatterbox_turbo') {
-                      form.setValue('engine', 'chatterbox_turbo');
-                      form.setValue('language', 'en');
-                    } else {
-                      const [, modelSize] = value.split(':');
-                      form.setValue('engine', 'qwen');
-                      form.setValue('modelSize', modelSize as '1.7B' | '0.6B');
-                    }
-                  }}
-                >
-                  <FormControl>
-                    <SelectTrigger>
-                      <SelectValue />
-                    </SelectTrigger>
-                  </FormControl>
-                  <SelectContent>
-                    <SelectItem value="qwen:1.7B">Qwen3-TTS 1.7B</SelectItem>
-                    <SelectItem value="qwen:0.6B">Qwen3-TTS 0.6B</SelectItem>
-                    <SelectItem value="luxtts">LuxTTS</SelectItem>
-                    <SelectItem value="chatterbox">Chatterbox</SelectItem>
-                    <SelectItem value="chatterbox_turbo">Chatterbox Turbo</SelectItem>
-                  </SelectContent>
-                </Select>
+                <EngineModelSelector form={form} selectedProfile={selectedProfile} />
                 <FormDescription>
-                  {form.watch('engine') === 'luxtts'
-                    ? 'Fast, English-focused'
-                    : form.watch('engine') === 'chatterbox'
-                      ? '23 languages, incl. Hebrew'
-                      : form.watch('engine') === 'chatterbox_turbo'
-                        ? 'English, [laugh] [cough] tags'
-                        : 'Multi-language, two sizes'}
+                  {getEngineDescription(form.watch('engine') || 'qwen')}
                 </FormDescription>
               </FormItem>
 

app/src/components/History/HistoryTable.tsx

@@ -1,21 +1,21 @@
-import { useQueryClient } from '@tanstack/react-query';
+import { useMutation, useQueryClient } from '@tanstack/react-query';
 import { AnimatePresence, motion } from 'framer-motion';
 import {
-  AlignCenter,
   AudioLines,
-  AudioWaveform,
   Download,
   FileArchive,
   Loader2,
   MoreHorizontal,
   Play,
   RotateCcw,
+  Square,
   Star,
   Trash2,
   Wand2,
 } from 'lucide-react';
 import { useEffect, useRef, useState } from 'react';
-import Loader from 'react-loaders';
+import { useTranslation } from 'react-i18next';
+
 import { EffectsChainEditor } from '@/components/Effects/EffectsChainEditor';
 import { Button } from '@/components/ui/button';
 import {
@@ -45,6 +45,7 @@ import { apiClient } from '@/lib/api/client';
 import type { EffectConfig, GenerationVersionResponse, HistoryResponse } from '@/lib/api/types';
 import { BOTTOM_SAFE_AREA_PADDING } from '@/lib/constants/ui';
 import {
+  useClearFailedGenerations,
   useDeleteGeneration,
   useExportGeneration,
   useExportGenerationAudio,
@@ -56,11 +57,39 @@ import { formatDate, formatDuration, formatEngineName } from '@/lib/utils/format
 import { useGenerationStore } from '@/stores/generationStore';
 import { usePlayerStore } from '@/stores/playerStore';
 
-// OLD TABLE-BASED COMPONENT - REMOVED (can be found in git history)
-// This is the new alternate history view with fixed height rows
+// ─── Audio Bars ─────────────────────────────────────────────────────────────
+
+function AudioBars({ mode }: { mode: 'idle' | 'generating' | 'playing' }) {
+  const barColor = mode !== 'idle' ? 'bg-accent' : 'bg-muted-foreground/40';
+  return (
+    <div className="flex items-center gap-[2px] h-5">
+      {[0, 1, 2, 3, 4].map((i) => (
+        <motion.div
+          key={`${mode}-${i}`}
+          className={`w-[3px] rounded-full ${barColor}`}
+          animate={
+            mode === 'generating'
+              ? { height: ['6px', '16px', '6px'] }
+              : mode === 'playing'
+                ? { height: ['8px', '14px', '4px', '12px', '8px'] }
+                : { height: '8px' }
+          }
+          transition={
+            mode === 'generating'
+              ? { duration: 0.6, repeat: Infinity, delay: i * 0.08, ease: 'easeInOut' }
+              : mode === 'playing'
+                ? { duration: 1.2, repeat: Infinity, delay: i * 0.15, ease: 'easeInOut' }
+                : { duration: 0.4, ease: 'easeOut' }
+          }
+        />
+      ))}
+    </div>
+  );
+}
 
 // NEW ALTERNATE HISTORY VIEW - FIXED HEIGHT ROWS WITH INFINITE SCROLL
 export function HistoryTable() {
+  const { t } = useTranslation();
   const [page, setPage] = useState(0);
   const [allHistory, setAllHistory] = useState<HistoryResponse[]>([]);
   const [total, setTotal] = useState(0);
@@ -97,9 +126,28 @@ export function HistoryTable() {
   });
 
   const deleteGeneration = useDeleteGeneration();
+  const clearFailed = useClearFailedGenerations();
+  const [clearFailedDialogOpen, setClearFailedDialogOpen] = useState(false);
   const exportGeneration = useExportGeneration();
   const exportGenerationAudio = useExportGenerationAudio();
   const importGeneration = useImportGeneration();
+  const cancelGeneration = useMutation({
+    mutationFn: (generationId: string) => apiClient.cancelGeneration(generationId),
+    onSuccess: async (data) => {
+      await queryClient.invalidateQueries({ queryKey: ['history'] });
+      toast({
+        title: 'Cancelling generation',
+        description: data.message,
+      });
+    },
+    onError: (error) => {
+      toast({
+        title: 'Cancel failed',
+        description: error instanceof Error ? error.message : 'Could not cancel generation',
+        variant: 'destructive',
+      });
+    },
+  });
   const addPendingGeneration = useGenerationStore((state) => state.addPendingGeneration);
   const setAudioWithAutoPlay = usePlayerStore((state) => state.setAudioWithAutoPlay);
   const restartCurrentAudio = usePlayerStore((state) => state.restartCurrentAudio);
@@ -126,13 +174,28 @@ export function HistoryTable() {
     }
   }, [historyData, page]);
 
-  // Reset to page 0 when deletions or imports occur
+  // Reset to page 0 when deletions, imports, or generation completions occur
+  const pendingCount = useGenerationStore((state) => state.pendingGenerationIds.size);
+  const prevPendingCountRef = useRef(pendingCount);
   useEffect(() => {
-    if (deleteGeneration.isSuccess || importGeneration.isSuccess) {
+    if (deleteGeneration.isSuccess || importGeneration.isSuccess || clearFailed.isSuccess) {
       setPage(0);
       setAllHistory([]);
     }
-  }, [deleteGeneration.isSuccess, importGeneration.isSuccess]);
+  }, [deleteGeneration.isSuccess, importGeneration.isSuccess, clearFailed.isSuccess]);
+
+  useEffect(() => {
+    // A generation finished (pending count decreased) — scroll back to show it
+    if (
+      prevPendingCountRef.current > 0 &&
+      pendingCount < prevPendingCountRef.current &&
+      page !== 0
+    ) {
+      setPage(0);
+      setAllHistory([]);
+    }
+    prevPendingCountRef.current = pendingCount;
+  }, [pendingCount, page]);
 
   // Intersection Observer for infinite scroll
   useEffect(() => {
@@ -373,6 +436,27 @@ export function HistoryTable() {
 
   const history = allHistory;
   const hasMore = allHistory.length < total;
+  const failedCount = history.filter((g) => g.status === 'failed').length;
+
+  const handleClearFailedConfirm = () => {
+    clearFailed.mutate(undefined, {
+      onSuccess: (data) => {
+        setClearFailedDialogOpen(false);
+        toast({
+          title: 'Cleared failed generations',
+          description: `${data.deleted} failed ${data.deleted === 1 ? 'generation' : 'generations'} removed.`,
+        });
+      },
+      onError: (error) => {
+        setClearFailedDialogOpen(false);
+        toast({
+          title: 'Failed to clear',
+          description: error instanceof Error ? error.message : 'Unknown error',
+          variant: 'destructive',
+        });
+      },
+    });
+  };
 
   return (
     <div className="flex flex-col h-full min-h-0 relative">
@@ -382,6 +466,23 @@ export function HistoryTable() {
         </div>
       ) : (
         <>
+          {failedCount > 0 && (
+            <div className="flex items-center justify-between px-1 pb-2">
+              <span className="text-xs text-muted-foreground">
+                {failedCount} failed {failedCount === 1 ? 'generation' : 'generations'}
+              </span>
+              <Button
+                variant="ghost"
+                size="sm"
+                className="h-7 text-xs text-muted-foreground hover:text-destructive"
+                onClick={() => setClearFailedDialogOpen(true)}
+                disabled={clearFailed.isPending}
+              >
+                <Trash2 className="h-3 w-3 mr-1.5" />
+                {clearFailed.isPending ? 'Clearing...' : 'Clear failed'}
+              </Button>
+            </div>
+          )}
           {isScrolled && (
             <div className="absolute top-0 left-0 right-0 h-16 bg-gradient-to-b from-background to-transparent z-10 pointer-events-none" />
           )}
@@ -394,11 +495,14 @@ export function HistoryTable() {
           >
             {history.map((gen) => {
               const isCurrentlyPlaying = currentAudioId === gen.id && isPlaying;
-              const isGenerating = gen.status === 'generating';
+              const isInProgress = gen.status === 'loading_model' || gen.status === 'generating';
+              const isGenerating = isInProgress;
               const isFailed = gen.status === 'failed';
               const isPlayable = !isGenerating && !isFailed;
               const hasVersions = gen.versions && gen.versions.length > 1;
               const isVersionsExpanded = expandedVersionsId === gen.id;
+              const isCancelling =
+                cancelGeneration.isPending && cancelGeneration.variables === gen.id;
               return (
                 <div
                   key={gen.id}
@@ -412,7 +516,7 @@ export function HistoryTable() {
                     role={isPlayable ? 'button' : undefined}
                     tabIndex={isPlayable ? 0 : undefined}
                     className={cn(
-                      'flex items-stretch gap-4 h-26 p-3',
+                      'flex items-stretch gap-4 h-26 p-3 outline-none',
                       isPlayable && 'hover:bg-muted/70 cursor-pointer rounded-md',
                       isVersionsExpanded && 'rounded-b-none',
                     )}
@@ -445,12 +549,9 @@ export function HistoryTable() {
                   >
                     {/* Status icon */}
                     <div className="flex items-center shrink-0 w-10 justify-center overflow-hidden">
-                      <div className="scale-50">
-                        <Loader
-                          type={isGenerating ? 'line-scale' : 'line-scale-pulse-out-rapid'}
-                          active={isGenerating || isCurrentlyPlaying}
-                        />
-                      </div>
+                      <AudioBars
+                        mode={isGenerating ? 'generating' : isCurrentlyPlaying ? 'playing' : 'idle'}
+                      />
                     </div>
 
                     {/* Left side - Meta information */}
@@ -472,8 +573,10 @@ export function HistoryTable() {
                         ) : null}
                       </div>
                       <div className="text-xs text-muted-foreground">
-                        {isGenerating ? (
-                          <span className="text-accent">Generating...</span>
+                        {isInProgress ? (
+                          <span className="text-accent">
+                            {gen.status === 'loading_model' ? 'Loading model...' : 'Generating...'}
+                          </span>
                         ) : (
                           formatDate(gen.created_at)
                         )}
@@ -527,69 +630,93 @@ export function HistoryTable() {
                       )}
 
                       {isFailed ? (
+                        <>
+                          <Button
+                            variant="ghost"
+                            size="icon"
+                            className="h-6 w-6 text-muted-foreground/50 hover:bg-muted-foreground/20 hover:text-muted-foreground"
+                            aria-label="Retry generation"
+                            onClick={() => handleRetry(gen.id)}
+                          >
+                            <RotateCcw className="h-2 w-2" />
+                          </Button>
+                          <Button
+                            variant="ghost"
+                            size="icon"
+                            className="h-6 w-6 text-muted-foreground/50 hover:bg-muted-foreground/20 hover:text-muted-foreground"
+                            aria-label="Delete generation"
+                            disabled={deleteGeneration.isPending}
+                            onClick={() => handleDeleteClick(gen.id, gen.profile_name)}
+                          >
+                            <Trash2 className="h-2 w-2" />
+                          </Button>
+                        </>
+                      ) : isGenerating ? (
                         <Button
                           variant="ghost"
                           size="icon"
                           className="h-6 w-6 text-muted-foreground/50 hover:bg-muted-foreground/20 hover:text-muted-foreground"
-                          aria-label="Retry generation"
-                          onClick={() => handleRetry(gen.id)}
+                          aria-label="Cancel generation"
+                          disabled={isCancelling}
+                          onClick={() => cancelGeneration.mutate(gen.id)}
                         >
-                          <RotateCcw className="h-2 w-2" />
+                          {isCancelling ? (
+                            <Loader2 className="h-2 w-2 animate-spin" />
+                          ) : (
+                            <Square className="h-2 w-2" />
+                          )}
                         </Button>
                       ) : (
-                        <>
-                          <DropdownMenu>
-                            <DropdownMenuTrigger asChild>
-                              <Button
-                                variant="ghost"
-                                size="icon"
-                                className="h-6 w-6 text-muted-foreground/50 hover:bg-muted-foreground/20 hover:text-muted-foreground"
-                                aria-label="Actions"
-                                disabled={isGenerating}
-                              >
-                                <MoreHorizontal className="h-2 w-2" />
-                              </Button>
-                            </DropdownMenuTrigger>
-                            <DropdownMenuContent align="end">
-                              <DropdownMenuItem
-                                onClick={() => handlePlay(gen.id, gen.text, gen.profile_id)}
-                              >
-                                <Play className="mr-2 h-4 w-4" />
-                                Play
-                              </DropdownMenuItem>
-                              <DropdownMenuItem
-                                onClick={() => handleDownloadAudio(gen.id, gen.text)}
-                                disabled={exportGenerationAudio.isPending}
-                              >
-                                <Download className="mr-2 h-4 w-4" />
-                                Export Audio
-                              </DropdownMenuItem>
-                              <DropdownMenuItem
-                                onClick={() => handleExportPackage(gen.id, gen.text)}
-                                disabled={exportGeneration.isPending}
-                              >
-                                <FileArchive className="mr-2 h-4 w-4" />
-                                Export Package
-                              </DropdownMenuItem>
-                              <DropdownMenuItem onClick={() => handleApplyEffects(gen.id)}>
-                                <Wand2 className="mr-2 h-4 w-4" />
-                                Apply Effects
-                              </DropdownMenuItem>
-                              <DropdownMenuItem onClick={() => handleRegenerate(gen.id)}>
-                                <RotateCcw className="mr-2 h-4 w-4" />
-                                Regenerate
-                              </DropdownMenuItem>
-                              <DropdownMenuItem
-                                onClick={() => handleDeleteClick(gen.id, gen.profile_name)}
-                                disabled={deleteGeneration.isPending}
-                                // className="text-destructive focus:text-destructive"
-                              >
-                                <Trash2 className="mr-2 h-4 w-4" />
-                                Delete
-                              </DropdownMenuItem>
-                            </DropdownMenuContent>
-                          </DropdownMenu>
-                        </>
+                        <DropdownMenu>
+                          <DropdownMenuTrigger asChild>
+                            <Button
+                              variant="ghost"
+                              size="icon"
+                              className="h-6 w-6 text-muted-foreground/50 hover:bg-muted-foreground/20 hover:text-muted-foreground"
+                              aria-label={t('history.actions.menu')}
+                              disabled={isGenerating}
+                            >
+                              <MoreHorizontal className="h-2 w-2" />
+                            </Button>
+                          </DropdownMenuTrigger>
+                          <DropdownMenuContent align="end">
+                            <DropdownMenuItem
+                              onClick={() => handlePlay(gen.id, gen.text, gen.profile_id)}
+                            >
+                              <Play className="mr-2 h-4 w-4" />
+                              {t('history.actions.play')}
+                            </DropdownMenuItem>
+                            <DropdownMenuItem
+                              onClick={() => handleDownloadAudio(gen.id, gen.text)}
+                              disabled={exportGenerationAudio.isPending}
+                            >
+                              <Download className="mr-2 h-4 w-4" />
+                              {t('history.actions.exportAudio')}
+                            </DropdownMenuItem>
+                            <DropdownMenuItem
+                              onClick={() => handleExportPackage(gen.id, gen.text)}
+                              disabled={exportGeneration.isPending}
+                            >
+                              <FileArchive className="mr-2 h-4 w-4" />
+                              {t('history.actions.exportPackage')}
+                            </DropdownMenuItem>
+                            <DropdownMenuItem onClick={() => handleApplyEffects(gen.id)}>
+                              <Wand2 className="mr-2 h-4 w-4" />
+                              {t('history.actions.applyEffects')}
+                            </DropdownMenuItem>
+                            <DropdownMenuItem onClick={() => handleRegenerate(gen.id)}>
+                              <RotateCcw className="mr-2 h-4 w-4" />
+                              {t('history.actions.regenerate')}
+                            </DropdownMenuItem>
+                            <DropdownMenuItem
+                              onClick={() => handleDeleteClick(gen.id, gen.profile_name)}
+                              disabled={deleteGeneration.isPending}
+                            >
+                              <Trash2 className="mr-2 h-4 w-4" />
+                              {t('common.delete')}
+                            </DropdownMenuItem>
+                          </DropdownMenuContent>
+                        </DropdownMenu>
                       )}
                     </div>
                   </div>
@@ -678,10 +805,9 @@ export function HistoryTable() {
       <Dialog open={deleteDialogOpen} onOpenChange={setDeleteDialogOpen}>
         <DialogContent>
           <DialogHeader>
-            <DialogTitle>Delete Generation</DialogTitle>
+            <DialogTitle>{t('history.deleteDialog.title')}</DialogTitle>
             <DialogDescription>
-              Are you sure you want to delete this generation from "{generationToDelete?.name}"?
-              This action cannot be undone.
+              {t('history.deleteDialog.body', { name: generationToDelete?.name })}
             </DialogDescription>
           </DialogHeader>
           <DialogFooter>
@@ -692,14 +818,39 @@ export function HistoryTable() {
                 setGenerationToDelete(null);
               }}
             >
-              Cancel
+              {t('common.cancel')}
             </Button>
             <Button
               variant="destructive"
               onClick={handleDeleteConfirm}
               disabled={deleteGeneration.isPending}
             >
-              {deleteGeneration.isPending ? 'Deleting...' : 'Delete'}
+              {deleteGeneration.isPending ? t('history.deleteDialog.deleting') : t('common.delete')}
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+
+      <Dialog open={clearFailedDialogOpen} onOpenChange={setClearFailedDialogOpen}>
+        <DialogContent>
+          <DialogHeader>
+            <DialogTitle>{t('history.clearFailedDialog.title')}</DialogTitle>
+            <DialogDescription>
+              {t('history.clearFailedDialog.body', { count: failedCount })}
+            </DialogDescription>
+          </DialogHeader>
+          <DialogFooter>
+            <Button variant="outline" onClick={() => setClearFailedDialogOpen(false)}>
+              {t('common.cancel')}
+            </Button>
+            <Button
+              variant="destructive"
+              onClick={handleClearFailedConfirm}
+              disabled={clearFailed.isPending}
+            >
+              {clearFailed.isPending
+                ? t('history.clearFailedDialog.clearing')
+                : t('history.clearFailedDialog.clearAll')}
             </Button>
           </DialogFooter>
         </DialogContent>
@@ -708,9 +859,9 @@ export function HistoryTable() {
       <Dialog open={importDialogOpen} onOpenChange={setImportDialogOpen}>
         <DialogContent>
           <DialogHeader>
-            <DialogTitle>Import Generation</DialogTitle>
+            <DialogTitle>{t('history.importDialog.title')}</DialogTitle>
             <DialogDescription>
-              Import the generation from "{selectedFile?.name}". This will add it to your history.
+              {t('history.importDialog.body', { name: selectedFile?.name })}
             </DialogDescription>
           </DialogHeader>
           <DialogFooter>
@@ -724,13 +875,15 @@ export function HistoryTable() {
                 }
               }}
             >
-              Cancel
+              {t('common.cancel')}
             </Button>
             <Button
               onClick={handleImportConfirm}
               disabled={importGeneration.isPending || !selectedFile}
             >
-              {importGeneration.isPending ? 'Importing...' : 'Import'}
+              {importGeneration.isPending
+                ? t('history.importDialog.importing')
+                : t('history.importDialog.action')}
             </Button>
           </DialogFooter>
         </DialogContent>
@@ -739,21 +892,20 @@ export function HistoryTable() {
       <Dialog open={effectsDialogOpen} onOpenChange={setEffectsDialogOpen}>
         <DialogContent className="max-w-md">
           <DialogHeader>
-            <DialogTitle>Apply Effects</DialogTitle>
-            <DialogDescription>
-              Configure post-processing effects to apply to this generation. A new version will be
-              created.
-            </DialogDescription>
+            <DialogTitle>{t('history.effectsDialog.title')}</DialogTitle>
+            <DialogDescription>{t('history.effectsDialog.body')}</DialogDescription>
           </DialogHeader>
           {effectsTargetVersions.length > 1 && (
             <div className="space-y-1.5">
-              <label className="text-xs font-medium text-muted-foreground">Source</label>
+              <label className="text-xs font-medium text-muted-foreground">
+                {t('history.effectsDialog.sourceLabel')}
+              </label>
               <Select
                 value={effectsSourceVersionId ?? ''}
                 onValueChange={(val) => setEffectsSourceVersionId(val || null)}
               >
                 <SelectTrigger className="h-8 text-xs">
-                  <SelectValue placeholder="Select source version" />
+                  <SelectValue placeholder={t('history.effectsDialog.sourcePlaceholder')} />
                 </SelectTrigger>
                 <SelectContent>
                   {effectsTargetVersions.map((v) => (
@@ -775,13 +927,15 @@ export function HistoryTable() {
           </div>
           <DialogFooter>
             <Button variant="outline" onClick={() => setEffectsDialogOpen(false)}>
-              Cancel
+              {t('common.cancel')}
             </Button>
             <Button
               onClick={handleApplyEffectsConfirm}
               disabled={applyingEffects || effectsChain.length === 0}
             >
-              {applyingEffects ? 'Applying...' : 'Apply'}
+              {applyingEffects
+                ? t('history.effectsDialog.applying')
+                : t('history.effectsDialog.apply')}
             </Button>
           </DialogFooter>
         </DialogContent>

app/src/components/MainEditor/MainEditor.tsx

@@ -1,5 +1,6 @@
 import { Sparkles, Upload } from 'lucide-react';
 import { useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { FloatingGenerateBox } from '@/components/Generation/FloatingGenerateBox';
 import { HistoryTable } from '@/components/History/HistoryTable';
 import { Button } from '@/components/ui/button';
@@ -20,6 +21,7 @@ import { usePlayerStore } from '@/stores/playerStore';
 import { useUIStore } from '@/stores/uiStore';
 
 export function MainEditor() {
+  const { t } = useTranslation();
   const audioUrl = usePlayerStore((state) => state.audioUrl);
   const isPlayerVisible = !!audioUrl;
   const scrollRef = useRef<HTMLDivElement>(null);
@@ -39,8 +41,8 @@ export function MainEditor() {
     if (file) {
       if (!file.name.endsWith('.voicebox.zip')) {
         toast({
-          title: 'Invalid file type',
-          description: 'Please select a valid .voicebox.zip file',
+          title: t('main.import.invalidTitle'),
+          description: t('main.import.invalidDescription'),
           variant: 'destructive',
         });
         return;
@@ -60,13 +62,13 @@ export function MainEditor() {
             fileInputRef.current.value = '';
           }
           toast({
-            title: 'Profile imported',
-            description: 'Voice profile imported successfully',
+            title: t('main.import.successTitle'),
+            description: t('main.import.successDescription'),
           });
         },
         onError: (error) => {
           toast({
-            title: 'Failed to import profile',
+            title: t('main.import.failedTitle'),
             description: error.message,
             variant: 'destructive',
           });
@@ -76,21 +78,17 @@ export function MainEditor() {
   };
 
   return (
-    // Main view: Profiles top left, Generator bottom left, History right
     <div className="grid grid-cols-1 lg:grid-cols-2 lg:gap-6 h-full min-h-0 overflow-hidden relative">
-      {/* Left Column */}
       <div className="flex flex-col min-h-0 overflow-hidden relative lg:overflow-hidden">
-        {/* Scroll Mask - Always visible, behind content */}
         <div className="absolute top-0 left-0 right-0 h-16 bg-gradient-to-b from-background to-transparent z-0 pointer-events-none" />
 
-        {/* Fixed Header */}
         <div className="absolute top-0 left-0 right-0 z-10">
           <div className="flex items-center justify-between mb-4 px-1">
             <h2 className="text-2xl font-bold">Voicebox</h2>
             <div className="flex gap-2">
               <Button variant="outline" onClick={handleImportClick}>
                 <Upload className="mr-2 h-4 w-4" />
-                Import Voice
+                {t('main.importVoice')}
               </Button>
               <input
                 ref={fileInputRef}
@@ -101,13 +99,12 @@ export function MainEditor() {
               />
               <Button onClick={() => setDialogOpen(true)}>
                 <Sparkles className="mr-2 h-4 w-4" />
-                Create Voice
+                {t('main.createVoice')}
               </Button>
             </div>
           </div>
         </div>
 
-        {/* Scrollable Content */}
         <div
           ref={scrollRef}
           className={cn('flex-1 min-h-0 overflow-y-auto pt-14 pb-4', isPlayerVisible && 'lg:pb-32')}
@@ -120,25 +117,18 @@ export function MainEditor() {
         </div>
       </div>
 
-      {/* Divider - single column only */}
-      {/* <div className="border-t border-border -my-3 lg:hidden" /> */}
-
-      {/* Right Column - History */}
       <div className="flex flex-col min-h-0 overflow-hidden">
         <HistoryTable />
       </div>
 
-      {/* Floating Generate Box */}
       <FloatingGenerateBox isPlayerOpen={!!audioUrl} />
 
-      {/* Import Dialog */}
       <Dialog open={importDialogOpen} onOpenChange={setImportDialogOpen}>
         <DialogContent>
           <DialogHeader>
-            <DialogTitle>Import Profile</DialogTitle>
+            <DialogTitle>{t('main.import.dialogTitle')}</DialogTitle>
             <DialogDescription>
-              Import the profile from "{selectedFile?.name}". This will create a new profile with
-              all samples.
+              {t('main.import.dialogDescription', { name: selectedFile?.name })}
             </DialogDescription>
           </DialogHeader>
           <DialogFooter>
@@ -152,13 +142,13 @@ export function MainEditor() {
                 }
               }}
             >
-              Cancel
+              {t('common.cancel')}
             </Button>
             <Button
               onClick={handleImportConfirm}
               disabled={importProfile.isPending || !selectedFile}
             >
-              {importProfile.isPending ? 'Importing...' : 'Import'}
+              {importProfile.isPending ? t('main.import.importing') : t('main.import.action')}
             </Button>
           </DialogFooter>
         </DialogContent>

app/src/components/ServerSettings/GpuAcceleration.tsx

@@ -243,16 +243,54 @@ export function GpuAcceleration() {
 
         {/* Native GPU detected - no CUDA download needed */}
 
-        {/* CUDA download section - only show when no GPU is active (native or CUDA) */}
+        {/* Currently running CUDA - show switch back to CPU */}
+        {isCurrentlyCuda && platform.metadata.isTauri && (
+          <>
+            {restartPhase !== 'idle' ? (
+              <div className="flex items-center gap-2 p-3 rounded-lg bg-primary/5 border">
+                <Loader2 className="h-4 w-4 animate-spin" />
+                <span className="text-sm">
+                  {restartPhase === 'stopping' && 'Stopping server...'}
+                  {restartPhase === 'waiting' && 'Restarting server...'}
+                  {restartPhase === 'ready' && 'Server restarted successfully!'}
+                </span>
+              </div>
+            ) : (
+              <div className="space-y-3">
+                <p className="text-sm text-muted-foreground">
+                  Running with CUDA GPU acceleration. Switch back to CPU if needed (you can
+                  re-download later).
+                </p>
+                <Button onClick={handleSwitchToCpu} variant="outline" className="w-full" size="sm">
+                  <RotateCw className="h-4 w-4 mr-2" />
+                  Switch to CPU Backend
+                </Button>
+              </div>
+            )}
+            {error && (
+              <div className="flex items-center gap-2 text-sm text-destructive">
+                <AlertCircle className="h-4 w-4 shrink-0" />
+                <span>{error}</span>
+              </div>
+            )}
+          </>
+        )}
+
+        {/* CUDA download/manage section - show when no native GPU and not currently running CUDA */}
         {!hasNativeGpu && !isCurrentlyCuda && (
           <>
-            {/* Download progress */}
+            {/* Download progress (manual download or auto-update) */}
             {cudaDownloading && downloadProgress && (
               <div className="space-y-2">
                 <div className="flex items-center justify-between text-sm">
                   <div className="flex items-center gap-2">
                     <Loader2 className="h-4 w-4 animate-spin" />
-                    <span>{downloadProgress.filename || 'Downloading CUDA backend...'}</span>
+                    <span>
+                      {downloadProgress.filename ||
+                        (cudaAvailable
+                          ? 'Updating CUDA backend...'
+                          : 'Downloading CUDA backend...')}
+                    </span>
                   </div>
                   {downloadProgress.total > 0 && (
                     <span className="text-muted-foreground">
@@ -310,7 +348,7 @@ export function GpuAcceleration() {
                 )}
 
                 {/* Downloaded but not active - show switch button */}
-                {cudaAvailable && !isCurrentlyCuda && platform.metadata.isTauri && (
+                {cudaAvailable && platform.metadata.isTauri && (
                   <div className="space-y-3">
                     <p className="text-sm text-muted-foreground">
                       CUDA backend is downloaded and ready. Restart the server to enable GPU
@@ -323,27 +361,8 @@ export function GpuAcceleration() {
                   </div>
                 )}
 
-                {/* Currently active - show switch back to CPU */}
-                {isCurrentlyCuda && platform.metadata.isTauri && (
-                  <div className="space-y-3">
-                    <p className="text-sm text-muted-foreground">
-                      Running with CUDA GPU acceleration. Switch back to CPU if needed (you can
-                      re-download later).
-                    </p>
-                    <Button
-                      onClick={handleSwitchToCpu}
-                      variant="outline"
-                      className="w-full"
-                      size="sm"
-                    >
-                      <RotateCw className="h-4 w-4 mr-2" />
-                      Switch to CPU Backend
-                    </Button>
-                  </div>
-                )}
-
                 {/* Delete option when downloaded (and not active) */}
-                {cudaAvailable && !isCurrentlyCuda && (
+                {cudaAvailable && (
                   <Button
                     onClick={handleDelete}
                     variant="ghost"

app/src/components/ServerSettings/ModelManagement.tsx

@@ -18,6 +18,7 @@ import {
   X,
 } from 'lucide-react';
 import { useCallback, useMemo, useState } from 'react';
+import { Trans, useTranslation } from 'react-i18next';
 import {
   AlertDialog,
   AlertDialogAction,
@@ -62,6 +63,16 @@ const MODEL_DESCRIPTIONS: Record<string, string> = {
     'Production-grade open source TTS by Resemble AI. Supports 23 languages with voice cloning and emotion exaggeration control.',
   'chatterbox-turbo':
     'Streamlined 350M parameter TTS by Resemble AI. High-quality English speech with less compute and VRAM than larger models.',
+  'tada-1b':
+    'HumeAI TADA 1B — English speech-language model built on Llama 3.2 1B. Generates 700s+ of coherent audio with synchronized text-acoustic alignment.',
+  'tada-3b-ml':
+    'HumeAI TADA 3B Multilingual — built on Llama 3.2 3B. Supports 10 languages with high-fidelity voice cloning via text-acoustic dual alignment.',
+  kokoro:
+    'Kokoro 82M by hexgrad. Tiny 82M-parameter TTS that runs at CPU realtime. Supports 8 languages with pre-built voice styles. Apache 2.0 licensed.',
+  'qwen-custom-voice-1.7B':
+    'Qwen3-TTS CustomVoice 1.7B by Alibaba. 9 premium preset voices with instruct-based style control for tone, emotion, and prosody. Supports 10 languages.',
+  'qwen-custom-voice-0.6B':
+    'Qwen3-TTS CustomVoice 0.6B by Alibaba. Lightweight version with the same 9 preset voices and instruct control. Faster inference for lower-end hardware.',
   'whisper-base':
     'Smallest Whisper model (74M parameters). Fast transcription with moderate accuracy.',
   'whisper-small':
@@ -109,6 +120,7 @@ function formatBytes(bytes: number): string {
 }
 
 export function ModelManagement() {
+  const { t } = useTranslation();
   const { toast } = useToast();
   const queryClient = useQueryClient();
   const platform = usePlatform();
@@ -260,8 +272,8 @@ export function ModelManagement() {
       setDownloadingModel(null);
       setDownloadingDisplayName(null);
       toast({
-        title: 'Download failed',
-        description: error instanceof Error ? error.message : 'Unknown error',
+        title: t('models.toast.downloadFailed'),
+        description: error instanceof Error ? error.message : t('common.unknownError'),
         variant: 'destructive',
       });
     }
@@ -299,8 +311,8 @@ export function ModelManagement() {
         setDownloadingModel(prevDownloadingModel);
         setDownloadingDisplayName(prevDownloadingDisplayName);
         toast({
-          title: 'Cancel failed',
-          description: 'Could not cancel the download task.',
+          title: t('models.toast.cancelFailed'),
+          description: t('models.toast.cancelFailedDescription'),
           variant: 'destructive',
         });
       },
@@ -326,8 +338,10 @@ export function ModelManagement() {
     },
     onSuccess: async () => {
       toast({
-        title: 'Model deleted',
-        description: `${modelToDelete?.displayName || 'Model'} has been deleted successfully.`,
+        title: t('models.toast.deleted'),
+        description: t('models.toast.deletedDescription', {
+          name: modelToDelete?.displayName || t('models.defaultName'),
+        }),
       });
       setDeleteDialogOpen(false);
       setModelToDelete(null);
@@ -338,7 +352,7 @@ export function ModelManagement() {
     },
     onError: (error: Error) => {
       toast({
-        title: 'Delete failed',
+        title: t('models.toast.deleteFailed'),
         description: error.message,
         variant: 'destructive',
       });
@@ -351,15 +365,15 @@ export function ModelManagement() {
     },
     onSuccess: async (_data, modelName) => {
       toast({
-        title: 'Model unloaded',
-        description: `${modelName} has been unloaded from memory.`,
+        title: t('models.toast.unloaded'),
+        description: t('models.toast.unloadedDescription', { name: modelName }),
       });
       await queryClient.invalidateQueries({ queryKey: ['modelStatus'], refetchType: 'all' });
       await queryClient.refetchQueries({ queryKey: ['modelStatus'] });
     },
     onError: (error: Error) => {
       toast({
-        title: 'Unload failed',
+        title: t('models.toast.unloadFailed'),
         description: error.message,
         variant: 'destructive',
       });
@@ -367,7 +381,7 @@ export function ModelManagement() {
   });
 
   const formatSize = (sizeMb?: number): string => {
-    if (!sizeMb) return 'Unknown size';
+    if (!sizeMb) return t('models.unknownSize');
     if (sizeMb < 1024) return `${sizeMb.toFixed(1)} MB`;
     return `${(sizeMb / 1024).toFixed(2)} GB`;
   };
@@ -390,15 +404,18 @@ export function ModelManagement() {
     modelStatus?.models.filter(
       (m) =>
         m.model_name.startsWith('qwen-tts') ||
+        m.model_name.startsWith('qwen-custom-voice') ||
         m.model_name.startsWith('luxtts') ||
-        m.model_name.startsWith('chatterbox'),
+        m.model_name.startsWith('chatterbox') ||
+        m.model_name.startsWith('tada') ||
+        m.model_name.startsWith('kokoro'),
     ) ?? [];
   const whisperModels = modelStatus?.models.filter((m) => m.model_name.startsWith('whisper')) ?? [];
 
   // Build sections
   const sections: { label: string; models: ModelStatus[] }[] = [
-    { label: 'Voice Generation', models: voiceModels },
-    { label: 'Transcription', models: whisperModels },
+    { label: t('models.sections.voiceGeneration'), models: voiceModels },
+    { label: t('models.sections.transcription'), models: whisperModels },
   ];
 
   // Get detail modal state for selected model
@@ -414,16 +431,14 @@ export function ModelManagement() {
   // Derive license from HF data
   const license =
     hfModelInfo?.cardData?.license ||
-    hfModelInfo?.tags?.find((t) => t.startsWith('license:'))?.replace('license:', '');
+    hfModelInfo?.tags?.find((tag) => tag.startsWith('license:'))?.replace('license:', '');
 
   return (
     <div className="flex flex-col h-full">
       {/* Header */}
       <div className="shrink-0 pb-4">
-        <h1 className="text-lg font-semibold">Models</h1>
-        <p className="text-sm text-muted-foreground">
-          Download and manage AI models for voice generation and transcription
-        </p>
+        <h1 className="text-lg font-semibold">{t('models.title')}</h1>
+        <p className="text-sm text-muted-foreground">{t('models.subtitle')}</p>
       </div>
 
       {/* Model storage location */}
@@ -431,7 +446,7 @@ export function ModelManagement() {
         <div className="shrink-0 pb-4 border-b mb-4">
           <div className="flex items-center justify-between gap-2">
             <div className="min-w-0">
-              <span className="text-xs text-muted-foreground">Storage location</span>
+              <span className="text-xs text-muted-foreground">{t('models.storage.location')}</span>
               <p
                 className="text-xs font-mono text-muted-foreground/70 truncate"
                 title={cacheDir.path}
@@ -448,12 +463,12 @@ export function ModelManagement() {
                   try {
                     await platform.filesystem.openPath(cacheDir.path);
                   } catch {
-                    toast({ title: 'Failed to open model folder', variant: 'destructive' });
+                    toast({ title: t('models.toast.openFolderFailed'), variant: 'destructive' });
                   }
                 }}
               >
                 <FolderOpen className="h-3 w-3" />
-                Open
+                {t('models.storage.open')}
               </Button>
               <Button
                 variant="ghost"
@@ -462,12 +477,12 @@ export function ModelManagement() {
                 onClick={async () => {
                   try {
                     const newDir = await platform.filesystem.pickDirectory(
-                      'Choose model storage folder',
+                      t('models.storage.pickerTitle'),
                     );
                     if (!newDir) return;
                     setPendingMigrateDir(newDir);
                   } catch {
-                    toast({ title: 'Failed to open folder picker', variant: 'destructive' });
+                    toast({ title: t('models.toast.pickerFailed'), variant: 'destructive' });
                   }
                 }}
                 disabled={migrating}
@@ -477,7 +492,7 @@ export function ModelManagement() {
                 ) : (
                   <FolderOpen className="h-3 w-3" />
                 )}
-                {migrating ? 'Migrating...' : 'Change'}
+                {migrating ? t('models.storage.migrating') : t('models.storage.change')}
               </Button>
               {customModelsDir && (
                 <Button
@@ -487,13 +502,13 @@ export function ModelManagement() {
                   disabled={migrating}
                   onClick={async () => {
                     setCustomModelsDir(null);
-                    toast({ title: 'Reset to default location. Restarting server...' });
+                    toast({ title: t('models.toast.resetToDefault') });
                     await platform.lifecycle.restartServer('');
                     queryClient.invalidateQueries();
                   }}
                 >
                   <RotateCcw className="h-3 w-3" />
-                  Reset
+                  {t('models.storage.reset')}
                 </Button>
               )}
             </div>
@@ -507,7 +522,7 @@ export function ModelManagement() {
           <Loader2 className="h-5 w-5 animate-spin text-muted-foreground" />
         </div>
       ) : modelStatus ? (
-        <div className="flex-1 min-h-0 overflow-y-auto space-y-6">
+        <div className="flex-1 min-h-0 overflow-y-auto space-y-6 pb-6">
           {sections.map((section) => (
             <div key={section.label}>
               <h2 className="text-xs font-medium text-muted-foreground uppercase tracking-wider mb-1 px-1">
@@ -552,7 +567,7 @@ export function ModelManagement() {
                                 <div className="text-[10px] text-muted-foreground truncate">
                                   {hasProgress
                                     ? `${formatBytes(dl.current ?? 0)} / ${formatBytes(dl.total!)} (${pct.toFixed(0)}%)`
-                                    : dl?.filename || 'Connecting...'}
+                                    : dl?.filename || t('models.progress.connecting')}
                                 </div>
                               </div>
                             );
@@ -563,12 +578,12 @@ export function ModelManagement() {
                       <div className="shrink-0 flex items-center gap-2">
                         {hasError && (
                           <Badge variant="destructive" className="text-[10px] h-5">
-                            Error
+                            {t('common.error')}
                           </Badge>
                         )}
                         {model.loaded && (
                           <Badge className="text-[10px] h-5 bg-accent/15 text-accent border-accent/30 hover:bg-accent/15">
-                            Loaded
+                            {t('models.status.loaded')}
                           </Badge>
                         )}
                         {model.downloaded && !isDownloading && !hasError && (
@@ -600,7 +615,7 @@ export function ModelManagement() {
                   ) : (
                     <ChevronDown className="h-3.5 w-3.5" />
                   )}
-                  <span>Problems</span>
+                  <span>{t('models.problems.title')}</span>
                   <Badge variant="destructive" className="text-[10px] h-4 px-1.5 rounded-full">
                     {errorCount}
                   </Badge>
@@ -613,7 +628,7 @@ export function ModelManagement() {
                   disabled={clearAllMutation.isPending}
                 >
                   <RotateCcw className="h-3 w-3 mr-1" />
-                  Clear All
+                  {t('models.problems.clearAll')}
                 </Button>
               </div>
               {consoleOpen && (
@@ -632,13 +647,13 @@ export function ModelManagement() {
                       ) : (
                         <>
                           {': '}
-                          <span className="text-[#808080]">
-                            No error details available. Try downloading again.
-                          </span>
+                          <span className="text-[#808080]">{t('models.problems.noDetails')}</span>
                         </>
                       )}
                       <div className="text-[#6a9955] mt-0.5">
-                        started at {new Date(dl.started_at).toLocaleString()}
+                        {t('models.problems.startedAt', {
+                          time: new Date(dl.started_at).toLocaleString(),
+                        })}
                       </div>
                     </div>
                   ))}
@@ -679,13 +694,13 @@ export function ModelManagement() {
                   {freshSelectedModel.loaded && (
                     <Badge className="text-xs bg-accent/15 text-accent border-accent/30 hover:bg-accent/15">
                       <CircleCheck className="h-3 w-3 mr-1" />
-                      Loaded
+                      {t('models.status.loaded')}
                     </Badge>
                   )}
                   {selectedState?.hasError && (
                     <Badge variant="destructive" className="text-xs">
                       <CircleX className="h-3 w-3 mr-1" />
-                      Error
+                      {t('common.error')}
                     </Badge>
                   )}
                 </div>
@@ -694,7 +709,7 @@ export function ModelManagement() {
                 {hfLoading && freshSelectedModel.hf_repo_id && (
                   <div className="flex items-center gap-2 text-xs text-muted-foreground py-2">
                     <Loader2 className="h-3 w-3 animate-spin" />
-                    Loading model info...
+                    {t('models.detail.loadingInfo')}
                   </div>
                 )}
 
@@ -721,23 +736,29 @@ export function ModelManagement() {
                       )}
                       {hfModelInfo.author && (
                         <Badge variant="outline" className="text-[10px]">
-                          by {hfModelInfo.author}
+                          {t('models.detail.byAuthor', { author: hfModelInfo.author })}
                         </Badge>
                       )}
                     </div>
 
                     {/* Stats row */}
                     <div className="flex items-center gap-4 text-xs text-muted-foreground">
-                      <span className="flex items-center gap-1" title="Downloads">
+                      <span
+                        className="flex items-center gap-1"
+                        title={t('models.detail.downloads')}
+                      >
                         <Download className="h-3.5 w-3.5" />
                         {formatDownloads(hfModelInfo.downloads)}
                       </span>
-                      <span className="flex items-center gap-1" title="Likes">
+                      <span className="flex items-center gap-1" title={t('models.detail.likes')}>
                         <Heart className="h-3.5 w-3.5" />
                         {formatDownloads(hfModelInfo.likes)}
                       </span>
                       {license && (
-                        <span className="flex items-center gap-1" title="License">
+                        <span
+                          className="flex items-center gap-1"
+                          title={t('models.detail.license')}
+                        >
                           <Scale className="h-3.5 w-3.5" />
                           {formatLicense(license)}
                         </span>
@@ -749,8 +770,12 @@ export function ModelManagement() {
                       <div>
                         <span className="text-xs text-muted-foreground">
                           {hfModelInfo.cardData.language.length > 10
-                            ? `${hfModelInfo.cardData.language.length} languages supported`
-                            : `Languages: ${hfModelInfo.cardData.language.join(', ')}`}
+                            ? t('models.detail.languagesCount', {
+                                count: hfModelInfo.cardData.language.length,
+                              })
+                            : t('models.detail.languagesList', {
+                                list: hfModelInfo.cardData.language.join(', '),
+                              })}
                         </span>
                       </div>
                     )}
@@ -761,7 +786,9 @@ export function ModelManagement() {
                 {freshSelectedModel.downloaded && freshSelectedModel.size_mb && (
                   <div className="flex items-center gap-2 text-xs text-muted-foreground">
                     <HardDrive className="h-3.5 w-3.5" />
-                    <span>{formatSize(freshSelectedModel.size_mb)} on disk</span>
+                    <span>
+                      {t('models.detail.onDisk', { size: formatSize(freshSelectedModel.size_mb) })}
+                    </span>
                   </div>
                 )}
 
@@ -783,7 +810,7 @@ export function ModelManagement() {
                         className="flex-1"
                       >
                         <Download className="h-4 w-4 mr-2" />
-                        Retry Download
+                        {t('models.actions.retry')}
                       </Button>
                       <Button
                         size="sm"
@@ -812,7 +839,7 @@ export function ModelManagement() {
                               <div className="text-xs text-muted-foreground">
                                 {hasProgress
                                   ? `${formatBytes(dl.current ?? 0)} / ${formatBytes(dl.total!)} (${pct.toFixed(1)}%)`
-                                  : dl?.filename || 'Connecting to HuggingFace...'}
+                                  : dl?.filename || t('models.progress.connectingHf')}
                               </div>
                             </>
                           );
@@ -845,7 +872,9 @@ export function ModelManagement() {
                           ) : (
                             <Unplug className="h-4 w-4 mr-2" />
                           )}
-                          {unloadMutation.isPending ? 'Unloading...' : 'Unload'}
+                          {unloadMutation.isPending
+                            ? t('models.actions.unloading')
+                            : t('models.actions.unload')}
                         </Button>
                       )}
                       <Button
@@ -862,13 +891,13 @@ export function ModelManagement() {
                         disabled={freshSelectedModel.loaded}
                         title={
                           freshSelectedModel.loaded
-                            ? 'Unload model before deleting'
-                            : 'Delete model'
+                            ? t('models.actions.unloadFirst')
+                            : t('models.actions.deleteModel')
                         }
                         className="flex-1"
                       >
                         <Trash2 className="h-4 w-4 mr-2" />
-                        Delete Model
+                        {t('models.actions.deleteModel')}
                       </Button>
                     </div>
                   ) : (
@@ -878,7 +907,7 @@ export function ModelManagement() {
                       className="flex-1"
                     >
                       <Download className="h-4 w-4 mr-2" />
-                      Download
+                      {t('models.actions.download')}
                     </Button>
                   )}
                 </div>
@@ -892,20 +921,23 @@ export function ModelManagement() {
       <AlertDialog open={deleteDialogOpen} onOpenChange={setDeleteDialogOpen}>
         <AlertDialogContent>
           <AlertDialogHeader>
-            <AlertDialogTitle>Delete Model</AlertDialogTitle>
+            <AlertDialogTitle>{t('models.deleteDialog.title')}</AlertDialogTitle>
             <AlertDialogDescription>
-              Are you sure you want to delete <strong>{modelToDelete?.displayName}</strong>?
+              <Trans
+                i18nKey="models.deleteDialog.body"
+                values={{ name: modelToDelete?.displayName }}
+                components={{ strong: <strong /> }}
+              />
               {modelToDelete?.sizeMb && (
                 <>
                   {' '}
-                  This will free up {formatSize(modelToDelete.sizeMb)} of disk space. The model will
-                  need to be re-downloaded if you want to use it again.
+                  {t('models.deleteDialog.sizeNote', { size: formatSize(modelToDelete.sizeMb) })}
                 </>
               )}
             </AlertDialogDescription>
           </AlertDialogHeader>
           <AlertDialogFooter>
-            <AlertDialogCancel>Cancel</AlertDialogCancel>
+            <AlertDialogCancel>{t('common.cancel')}</AlertDialogCancel>
             <AlertDialogAction
               onClick={() => {
                 if (modelToDelete) {
@@ -918,10 +950,10 @@ export function ModelManagement() {
               {deleteMutation.isPending ? (
                 <>
                   <Loader2 className="h-4 w-4 mr-2 animate-spin" />
-                  Deleting...
+                  {t('models.deleteDialog.deleting')}
                 </>
               ) : (
-                'Delete'
+                t('common.delete')
               )}
             </AlertDialogAction>
           </AlertDialogFooter>
@@ -935,11 +967,8 @@ export function ModelManagement() {
       >
         <AlertDialogContent>
           <AlertDialogHeader>
-            <AlertDialogTitle>Move models to new location?</AlertDialogTitle>
-            <AlertDialogDescription>
-              The server will shut down while models are being moved to the new folder. It will
-              restart automatically once the migration is complete.
-            </AlertDialogDescription>
+            <AlertDialogTitle>{t('models.migrateDialog.title')}</AlertDialogTitle>
+            <AlertDialogDescription>{t('models.migrateDialog.description')}</AlertDialogDescription>
           </AlertDialogHeader>
           <div
             className="text-xs font-mono text-muted-foreground bg-muted/50 rounded px-3 py-2 truncate"
@@ -948,7 +977,7 @@ export function ModelManagement() {
             {pendingMigrateDir}
           </div>
           <AlertDialogFooter>
-            <AlertDialogCancel>Cancel</AlertDialogCancel>
+            <AlertDialogCancel>{t('common.cancel')}</AlertDialogCancel>
             <AlertDialogAction
               onClick={async () => {
                 if (!pendingMigrateDir) return;
@@ -960,11 +989,23 @@ export function ModelManagement() {
                   total: 0,
                   progress: 0,
                   status: 'downloading',
-                  filename: 'Preparing...',
+                  filename: t('models.migrateDialog.preparing'),
                 });
                 try {
                   // Start the migration (background task)
-                  await apiClient.migrateModels(newDir);
+                  const migrationResult = await apiClient.migrateModels(newDir);
+
+                  // If no models to migrate, warn user and skip the change
+                  if (migrationResult.moved === 0) {
+                    setMigrating(false);
+                    setMigrationProgress(null);
+                    toast({
+                      title: t('models.toast.noModelsToMigrate'),
+                      description: t('models.toast.noModelsToMigrateDescription'),
+                    });
+                    setPendingMigrateDir(null);
+                    return;
+                  }
 
                   // Connect to SSE for progress
                   await new Promise<void>((resolve, reject) => {
@@ -978,7 +1019,7 @@ export function ModelManagement() {
                           resolve();
                         } else if (data.status === 'error') {
                           es.close();
-                          reject(new Error(data.error || 'Migration failed'));
+                          reject(new Error(data.error || t('models.toast.migrationFailed')));
                         }
                       } catch {
                         /* ignore parse errors */
@@ -986,7 +1027,7 @@ export function ModelManagement() {
                     };
                     es.onerror = () => {
                       es.close();
-                      reject(new Error('Lost connection during migration'));
+                      reject(new Error(t('models.toast.migrationConnectionLost')));
                     };
                   });
 
@@ -996,15 +1037,16 @@ export function ModelManagement() {
                     total: 1,
                     progress: 100,
                     status: 'complete',
-                    filename: 'Restarting server...',
+                    filename: t('models.migrateDialog.restartingServer'),
                   });
                   await platform.lifecycle.restartServer(newDir);
                   queryClient.invalidateQueries();
-                  toast({ title: 'Models moved successfully' });
+                  toast({ title: t('models.toast.migrated') });
                 } catch (e) {
                   toast({
-                    title: 'Migration failed',
-                    description: e instanceof Error ? e.message : 'Failed to migrate models',
+                    title: t('models.toast.migrationFailed'),
+                    description:
+                      e instanceof Error ? e.message : t('models.toast.migrationFailedGeneric'),
                     variant: 'destructive',
                   });
                 } finally {
@@ -1013,7 +1055,7 @@ export function ModelManagement() {
                 }
               }}
             >
-              Move Models
+              {t('models.migrateDialog.action')}
             </AlertDialogAction>
           </AlertDialogFooter>
         </AlertDialogContent>
@@ -1025,11 +1067,11 @@ export function ModelManagement() {
           <div className="w-full max-w-md px-8 space-y-6 text-center">
             <div className="space-y-2">
               <Loader2 className="h-8 w-8 animate-spin mx-auto text-muted-foreground" />
-              <h2 className="text-lg font-semibold">Moving models</h2>
+              <h2 className="text-lg font-semibold">{t('models.migrate.title')}</h2>
               <p className="text-sm text-muted-foreground">
                 {migrationProgress.status === 'complete'
-                  ? 'Restarting server...'
-                  : 'The server is offline while models are being moved.'}
+                  ? t('models.migrateDialog.restartingServer')
+                  : t('models.migrate.offline')}
               </p>
             </div>
             {migrationProgress.total > 0 && (
@@ -1050,106 +1092,3 @@ export function ModelManagement() {
     </div>
   );
 }
-
-interface ModelItemProps {
-  model: {
-    model_name: string;
-    display_name: string;
-    downloaded: boolean;
-    downloading?: boolean; // From server - true if download in progress
-    size_mb?: number;
-    loaded: boolean;
-  };
-  onDownload: () => void;
-  onDelete: () => void;
-  isDownloading: boolean; // Local state - true if user just clicked download
-  formatSize: (sizeMb?: number) => string;
-}
-
-function ModelItem({ model, onDownload, onDelete, isDownloading, formatSize }: ModelItemProps) {
-  // Use server's downloading state OR local state (for immediate feedback before server updates)
-  const showDownloading = model.downloading || isDownloading;
-
-  const statusText = model.loaded
-    ? 'Loaded'
-    : showDownloading
-      ? 'Downloading'
-      : model.downloaded
-        ? 'Downloaded'
-        : 'Not downloaded';
-  const sizeText =
-    model.downloaded && model.size_mb && !showDownloading ? `, ${formatSize(model.size_mb)}` : '';
-  const rowLabel = `${model.display_name}, ${statusText}${sizeText}. Use Tab to reach Download or Delete.`;
-
-  return (
-    <div
-      className="flex items-center justify-between p-3 border rounded-lg"
-      role="group"
-      tabIndex={0}
-      aria-label={rowLabel}
-    >
-      <div className="flex-1">
-        <div className="flex items-center gap-2">
-          <span className="font-medium text-sm">{model.display_name}</span>
-          {model.loaded && (
-            <Badge variant="default" className="text-xs">
-              Loaded
-            </Badge>
-          )}
-          {/* Only show Downloaded if actually downloaded AND not downloading */}
-          {model.downloaded && !model.loaded && !showDownloading && (
-            <Badge variant="secondary" className="text-xs">
-              Downloaded
-            </Badge>
-          )}
-        </div>
-        {model.downloaded && model.size_mb && !showDownloading && (
-          <div className="text-xs text-muted-foreground mt-1">
-            Size: {formatSize(model.size_mb)}
-          </div>
-        )}
-      </div>
-      <div className="flex items-center gap-2">
-        {model.downloaded && !showDownloading ? (
-          <div className="flex items-center gap-2">
-            <div className="flex items-center gap-1 text-sm text-muted-foreground">
-              <span>Ready</span>
-            </div>
-            <Button
-              size="sm"
-              onClick={onDelete}
-              variant="outline"
-              disabled={model.loaded}
-              title={model.loaded ? 'Unload model before deleting' : 'Delete model'}
-              aria-label={
-                model.loaded ? 'Unload model before deleting' : `Delete ${model.display_name}`
-              }
-            >
-              <Trash2 className="h-4 w-4" />
-            </Button>
-          </div>
-        ) : showDownloading ? (
-          <Button
-            size="sm"
-            variant="outline"
-            disabled
-            aria-label={`${model.display_name} downloading`}
-          >
-            <Loader2 className="h-4 w-4 mr-2 animate-spin" />
-            Downloading...
-          </Button>
-        ) : (
-          <Button
-            size="sm"
-            onClick={onDownload}
-            variant="outline"
-            aria-label={`Download ${model.display_name}`}
-          >
-            <Download className="h-4 w-4 mr-2" />
-            Download
-          </Button>
-        )}
-      </div>
-    </div>
-  );
-}

app/src/components/ServerSettings/ModelProgress.tsx

@@ -12,7 +12,11 @@ interface ModelProgressProps {
   isDownloading?: boolean;
 }
 
-export function ModelProgress({ modelName, displayName, isDownloading = false }: ModelProgressProps) {
+export function ModelProgress({
+  modelName,
+  displayName,
+  isDownloading = false,
+}: ModelProgressProps) {
   const [progress, setProgress] = useState<ModelProgressType | null>(null);
   const serverUrl = useServerStore((state) => state.serverUrl);
 

app/src/components/ServerTab/AboutPage.tsx

@@ -0,0 +1,141 @@
+import { ArrowUpRight } from 'lucide-react';
+import type { CSSProperties, ReactNode } from 'react';
+import { useEffect, useState } from 'react';
+import { Trans, useTranslation } from 'react-i18next';
+import voiceboxLogo from '@/assets/voicebox-logo.png';
+import { usePlatform } from '@/platform/PlatformContext';
+
+function FadeIn({ delay = 0, children }: { delay?: number; children: ReactNode }) {
+  return (
+    <div
+      className="animate-[fadeInUp_0.5s_ease_both]"
+      style={{ animationDelay: `${delay}ms` } as CSSProperties}
+    >
+      {children}
+    </div>
+  );
+}
+
+export function AboutPage() {
+  const { t } = useTranslation();
+  const platform = usePlatform();
+  const [version, setVersion] = useState('');
+
+  useEffect(() => {
+    platform.metadata
+      .getVersion()
+      .then(setVersion)
+      .catch(() => setVersion(''));
+  }, [platform]);
+
+  return (
+    <>
+      <style>{`
+        @keyframes fadeInUp {
+          from {
+            opacity: 0;
+            transform: translateY(8px);
+          }
+          to {
+            opacity: 1;
+            transform: translateY(0);
+          }
+        }
+      `}</style>
+      <div className="max-w-md mx-auto h-full flex items-center">
+        <div className="flex flex-col items-center text-center space-y-5">
+          <FadeIn delay={0}>
+            <img src={voiceboxLogo} alt="Voicebox" className="w-20 h-20 object-contain" />
+          </FadeIn>
+
+          <FadeIn delay={80}>
+            <div className="space-y-1.5">
+              <h1 className="text-lg font-semibold">Voicebox</h1>
+              <p className="text-xs text-muted-foreground/60 h-4">
+                {version ? `v${version}` : '\u00A0'}
+              </p>
+            </div>
+          </FadeIn>
+
+          <FadeIn delay={160}>
+            <p className="text-sm text-muted-foreground leading-relaxed max-w-sm">
+              {t('settings.about.tagline')}
+            </p>
+          </FadeIn>
+
+          <FadeIn delay={240}>
+            <div className="flex items-center gap-1.5 text-sm text-muted-foreground">
+              <span>{t('settings.about.createdBy')}</span>
+              <a
+                href="https://github.com/jamiepine"
+                target="_blank"
+                rel="noopener noreferrer"
+                className="text-accent hover:underline"
+              >
+                Jamie Pine
+              </a>
+            </div>
+          </FadeIn>
+
+          <FadeIn delay={320}>
+            <div className="flex flex-wrap justify-center gap-3 pt-2">
+              <a
+                href="https://buymeacoffee.com/jamiepine"
+                target="_blank"
+                rel="noopener noreferrer"
+                className="group inline-flex items-center gap-2 rounded-lg border border-border/60 px-4 py-2 text-sm transition-colors hover:bg-muted/50"
+              >
+                <svg
+                  className="h-4 w-4 text-[#FFDD00]"
+                  viewBox="0 0 24 24"
+                  fill="currentColor"
+                  aria-hidden="true"
+                >
+                  <path d="m20.216 6.415-.132-.666c-.119-.598-.388-1.163-1.001-1.379-.197-.069-.42-.098-.57-.241-.152-.143-.196-.366-.231-.572-.065-.378-.125-.756-.192-1.133-.057-.325-.102-.69-.25-.987-.195-.4-.597-.634-.996-.788a5.723 5.723 0 0 0-.626-.194c-1-.263-2.05-.36-3.077-.416a25.834 25.834 0 0 0-3.7.062c-.915.083-1.88.184-2.75.5-.318.116-.646.256-.888.501-.297.302-.393.77-.177 1.146.154.267.415.456.692.58.36.162.737.284 1.123.366 1.075.238 2.189.331 3.287.37 1.218.05 2.437.01 3.65-.118.299-.033.598-.073.896-.119.352-.054.578-.513.474-.834-.124-.383-.457-.531-.834-.473-.466.074-.96.108-1.382.146-1.177.08-2.358.082-3.536.006a22.228 22.228 0 0 1-1.157-.107c-.086-.01-.18-.025-.258-.036-.243-.036-.484-.08-.724-.13-.111-.027-.111-.185 0-.212h.005c.277-.06.557-.108.838-.147h.002c.131-.009.263-.032.394-.048a25.076 25.076 0 0 1 3.426-.12c.674.019 1.347.067 2.017.144l.228.031c.267.04.533.088.798.145.392.085.895.113 1.07.542.055.137.08.288.111.431l.319 1.484a.237.237 0 0 1-.199.284h-.003c-.037.006-.075.01-.112.015a36.704 36.704 0 0 1-4.743.295 37.059 37.059 0 0 1-4.699-.304c-.14-.017-.293-.042-.417-.06-.326-.048-.649-.108-.973-.161-.393-.065-.768-.032-1.123.161-.29.16-.527.404-.675.701-.154.316-.199.66-.267 1-.069.34-.176.707-.135 1.056.087.753.613 1.365 1.37 1.502a39.69 39.69 0 0 0 11.343.376.483.483 0 0 1 .535.53l-.071.697-1.018 9.907c-.041.41-.047.832-.125 1.237-.122.637-.553 1.028-1.182 1.171-.577.131-1.165.2-1.756.205-.656.004-1.31-.025-1.966-.022-.699.004-1.556-.06-2.095-.58-.475-.458-.54-1.174-.605-1.793l-.731-7.013-.322-3.094c-.037-.351-.286-.695-.678-.678-.336.015-.718.3-.678.679l.228 2.185.949 9.112c.147 1.344 1.174 2.068 2.446 2.272.742.12 1.503.144 2.257.156.966.016 1.942.053 2.892-.122 1.408-.258 2.465-1.198 2.616-2.657.34-3.332.683-6.663 1.024-9.995l.215-2.087a.484.484 0 0 1 .39-.426c.402-.078.787-.212 1.074-.518.455-.488.546-1.124.385-1.766zm-1.478.772c-.145.137-.363.201-.578.233-2.416.359-4.866.54-7.308.46-1.748-.06-3.477-.254-5.207-.498-.17-.024-.353-.055-.47-.18-.22-.236-.111-.71-.054-.995.052-.26.152-.609.463-.646.484-.057 1.046.148 1.526.22.577.088 1.156.159 1.737.212 2.48.226 5.002.19 7.472-.14.45-.06.899-.13 1.345-.21.399-.072.84-.206 1.08.206.166.281.188.657.162.974a.544.544 0 0 1-.169.364zm-6.159 3.9c-.862.37-1.84.788-3.109.788a5.884 5.884 0 0 1-1.569-.217l.877 9.004c.065.78.717 1.38 1.5 1.38 0 0 1.243.065 1.658.065.447 0 1.786-.065 1.786-.065.783 0 1.434-.6 1.499-1.38l.94-9.95a3.996 3.996 0 0 0-1.322-.238c-.826 0-1.491.284-2.26.613z" />
+                </svg>
+                {t('settings.about.buyCoffee')}
+                <ArrowUpRight className="h-3.5 w-3.5 text-muted-foreground/40 group-hover:text-muted-foreground transition-colors" />
+              </a>
+              <a
+                href="https://github.com/jamiepine/voicebox"
+                target="_blank"
+                rel="noopener noreferrer"
+                className="group inline-flex items-center gap-2 rounded-lg border border-border/60 px-4 py-2 text-sm transition-colors hover:bg-muted/50"
+              >
+                <svg
+                  className="h-4 w-4 text-muted-foreground"
+                  viewBox="0 0 24 24"
+                  fill="currentColor"
+                  aria-hidden="true"
+                >
+                  <path d="M12 2C6.477 2 2 6.484 2 12.017c0 4.425 2.865 8.18 6.839 9.504.5.092.682-.217.682-.483 0-.237-.008-.868-.013-1.703-2.782.605-3.369-1.343-3.369-1.343-.454-1.158-1.11-1.466-1.11-1.466-.908-.62.069-.608.069-.608 1.003.07 1.531 1.032 1.531 1.032.892 1.53 2.341 1.088 2.91.832.092-.647.35-1.088.636-1.338-2.22-.253-4.555-1.113-4.555-4.951 0-1.093.39-1.988 1.029-2.688-.103-.253-.446-1.272.098-2.65 0 0 .84-.27 2.75 1.026A9.564 9.564 0 0112 6.844c.85.004 1.705.115 2.504.337 1.909-1.296 2.747-1.027 2.747-1.027.546 1.379.202 2.398.1 2.651.64.7 1.028 1.595 1.028 2.688 0 3.848-2.339 4.695-4.566 4.943.359.309.678.92.678 1.855 0 1.338-.012 2.419-.012 2.747 0 .268.18.58.688.482A10.019 10.019 0 0022 12.017C22 6.484 17.522 2 12 2z" />
+                </svg>
+                GitHub
+                <ArrowUpRight className="h-3.5 w-3.5 text-muted-foreground/40 group-hover:text-muted-foreground transition-colors" />
+              </a>
+            </div>
+          </FadeIn>
+
+          <FadeIn delay={400}>
+            <p className="text-xs text-muted-foreground/40 pt-4">
+              <Trans
+                i18nKey="settings.about.license"
+                components={{
+                  link: (
+                    // biome-ignore lint/a11y/useAnchorContent: Trans fills content at runtime
+                    <a
+                      href="https://github.com/jamiepine/voicebox/blob/main/LICENSE"
+                      target="_blank"
+                      rel="noopener noreferrer"
+                      className="hover:text-muted-foreground/60 transition-colors"
+                    />
+                  ),
+                }}
+              />
+            </p>
+          </FadeIn>
+        </div>
+      </div>
+    </>
+  );
+}

app/src/components/ServerTab/ChangelogPage.tsx

@@ -0,0 +1,224 @@
+import changelogRaw from 'virtual:changelog';
+import { useMemo, useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import { Badge } from '@/components/ui/badge';
+import { type ChangelogEntry, parseChangelog } from '@/lib/utils/parseChangelog';
+
+function renderMarkdown(md: string): React.ReactNode[] {
+  const lines = md.split('\n');
+  const elements: React.ReactNode[] = [];
+  let i = 0;
+
+  while (i < lines.length) {
+    const line = lines[i];
+
+    // Skip empty lines
+    if (line.trim() === '') {
+      i++;
+      continue;
+    }
+
+    // Tables — collect all lines starting with |
+    if (line.trim().startsWith('|')) {
+      const tableLines: string[] = [];
+      while (i < lines.length && lines[i].trim().startsWith('|')) {
+        tableLines.push(lines[i]);
+        i++;
+      }
+      elements.push(renderTable(tableLines, elements.length));
+      continue;
+    }
+
+    // Headings
+    if (line.startsWith('#### ')) {
+      elements.push(
+        <h5 key={elements.length} className="text-sm font-medium mt-5 mb-1">
+          {inlineMarkdown(line.slice(5))}
+        </h5>,
+      );
+      i++;
+      continue;
+    }
+    if (line.startsWith('### ')) {
+      elements.push(
+        <h4 key={elements.length} className="text-sm font-medium mt-6 mb-2">
+          {inlineMarkdown(line.slice(4))}
+        </h4>,
+      );
+      i++;
+      continue;
+    }
+
+    // List items — collect consecutive
+    if (line.startsWith('- ')) {
+      const items: string[] = [];
+      while (i < lines.length && lines[i].startsWith('- ')) {
+        items.push(lines[i].slice(2));
+        i++;
+      }
+      elements.push(
+        <ul key={elements.length} className="space-y-1 my-2">
+          {items.map((item, idx) => (
+            <li key={idx} className="text-sm text-muted-foreground flex gap-2">
+              <span className="text-muted-foreground/50 select-none shrink-0">&bull;</span>
+              <span>{inlineMarkdown(item)}</span>
+            </li>
+          ))}
+        </ul>,
+      );
+      continue;
+    }
+
+    // Paragraph
+    elements.push(
+      <p key={elements.length} className="text-sm text-muted-foreground my-2">
+        {inlineMarkdown(line)}
+      </p>,
+    );
+    i++;
+  }
+
+  return elements;
+}
+
+function renderTable(tableLines: string[], keyBase: number): React.ReactNode {
+  const parseRow = (line: string) =>
+    line
+      .split('|')
+      .slice(1, -1)
+      .map((c) => c.trim());
+
+  const headers = parseRow(tableLines[0]);
+  // Skip separator line (index 1)
+  const rows = tableLines.slice(2).map(parseRow);
+
+  return (
+    <div key={keyBase} className="overflow-x-auto my-3">
+      <table className="text-sm w-full">
+        <thead>
+          <tr className="border-b">
+            {headers.map((h, hIdx) => (
+              <th
+                key={hIdx}
+                className="text-left py-1.5 pr-4 text-muted-foreground font-medium text-xs"
+              >
+                {inlineMarkdown(h)}
+              </th>
+            ))}
+          </tr>
+        </thead>
+        <tbody>
+          {rows.map((row, rowIdx) => (
+            <tr key={rowIdx} className="border-b border-border/50">
+              {row.map((cell, cellIdx) => (
+                <td key={cellIdx} className="py-1.5 pr-4 text-muted-foreground">
+                  {inlineMarkdown(cell)}
+                </td>
+              ))}
+            </tr>
+          ))}
+        </tbody>
+      </table>
+    </div>
+  );
+}
+
+function inlineMarkdown(text: string): React.ReactNode {
+  // Process inline markdown: bold, code, links
+  const parts: React.ReactNode[] = [];
+  // Regex matches: **bold**, `code`, [text](url)
+  const inlineRe = /\*\*(.+?)\*\*|`([^`]+)`|\[([^\]]+)\]\(([^)]+)\)/g;
+  let lastIndex = 0;
+  let match: RegExpExecArray | null = inlineRe.exec(text);
+
+  while (match !== null) {
+    if (match.index > lastIndex) {
+      parts.push(text.slice(lastIndex, match.index));
+    }
+
+    if (match[1] !== undefined) {
+      // Bold
+      parts.push(
+        <strong key={parts.length} className="font-medium text-foreground">
+          {match[1]}
+        </strong>,
+      );
+    } else if (match[2] !== undefined) {
+      // Code
+      parts.push(
+        <code key={parts.length} className="px-1 py-0.5 rounded bg-muted text-xs font-mono">
+          {match[2]}
+        </code>,
+      );
+    } else if (match[3] !== undefined && match[4] !== undefined) {
+      // Link
+      parts.push(
+        <a
+          key={parts.length}
+          href={match[4]}
+          target="_blank"
+          rel="noopener noreferrer"
+          className="text-accent hover:underline"
+        >
+          {match[3]}
+        </a>,
+      );
+    }
+
+    lastIndex = match.index + match[0].length;
+    match = inlineRe.exec(text);
+  }
+
+  if (lastIndex < text.length) {
+    parts.push(text.slice(lastIndex));
+  }
+
+  return parts.length === 1 ? parts[0] : parts;
+}
+
+function ChangelogEntryCard({ entry }: { entry: ChangelogEntry }) {
+  const { t } = useTranslation();
+  const [expanded, setExpanded] = useState(false);
+  const content = useMemo(() => renderMarkdown(entry.body), [entry.body]);
+  const isLong = entry.body.split('\n').length > 12;
+
+  return (
+    <div className="border-b border-border/50 pb-6">
+      <div className="flex items-baseline gap-3 mb-3">
+        <h3 className="text-xl font-semibold tracking-tight">{entry.version}</h3>
+        {entry.date && <span className="text-xs text-muted-foreground">{entry.date}</span>}
+        {entry.version === 'Unreleased' && (
+          <Badge variant="outline">{t('settings.changelog.devBadge')}</Badge>
+        )}
+      </div>
+
+      <div className={isLong && !expanded ? 'max-h-48 overflow-hidden relative' : ''}>
+        {content}
+        {isLong && !expanded && (
+          <div className="absolute bottom-0 left-0 right-0 h-16 bg-gradient-to-t from-background to-transparent" />
+        )}
+      </div>
+
+      {isLong && (
+        <button
+          onClick={() => setExpanded(!expanded)}
+          className="text-xs text-accent hover:underline mt-2"
+        >
+          {expanded ? t('settings.changelog.showLess') : t('settings.changelog.showMore')}
+        </button>
+      )}
+    </div>
+  );
+}
+
+export function ChangelogPage() {
+  const entries = useMemo(() => parseChangelog(changelogRaw), []);
+
+  return (
+    <div className="space-y-6 max-w-2xl">
+      {entries.map((entry) => (
+        <ChangelogEntryCard key={entry.version} entry={entry} />
+      ))}
+    </div>
+  );
+}

app/src/components/ServerTab/GeneralPage.tsx

@@ -0,0 +1,422 @@
+import { zodResolver } from '@hookform/resolvers/zod';
+import { AlertCircle, ArrowUpRight, Book, Download, Loader2, RefreshCw } from 'lucide-react';
+import { useEffect, useMemo, useState } from 'react';
+import { useForm } from 'react-hook-form';
+import { Trans, useTranslation } from 'react-i18next';
+import * as z from 'zod';
+import { Button } from '@/components/ui/button';
+import { Form, FormControl, FormField, FormItem, FormMessage } from '@/components/ui/form';
+import { Input } from '@/components/ui/input';
+import { Progress } from '@/components/ui/progress';
+import { Toggle } from '@/components/ui/toggle';
+import { useToast } from '@/components/ui/use-toast';
+import { useAutoUpdater } from '@/hooks/useAutoUpdater';
+import { useServerHealth } from '@/lib/hooks/useServer';
+import { usePlatform } from '@/platform/PlatformContext';
+import { useServerStore } from '@/stores/serverStore';
+import { LanguageSelect } from './LanguageSelect';
+import { SettingRow, SettingSection } from './SettingRow';
+
+function makeConnectionSchema(invalidUrl: string) {
+  return z.object({
+    serverUrl: z.string().url(invalidUrl),
+  });
+}
+
+type ConnectionFormValues = { serverUrl: string };
+
+export function GeneralPage() {
+  const { t } = useTranslation();
+  const platform = usePlatform();
+  const serverUrl = useServerStore((state) => state.serverUrl);
+  const setServerUrl = useServerStore((state) => state.setServerUrl);
+  const keepServerRunningOnClose = useServerStore((state) => state.keepServerRunningOnClose);
+  const setKeepServerRunningOnClose = useServerStore((state) => state.setKeepServerRunningOnClose);
+  const mode = useServerStore((state) => state.mode);
+  const setMode = useServerStore((state) => state.setMode);
+  const { toast } = useToast();
+  const { data: health, isLoading, error: healthError } = useServerHealth();
+
+  const resolver = useMemo(
+    () => zodResolver(makeConnectionSchema(t('settings.general.serverUrl.invalidUrl'))),
+    [t],
+  );
+  const form = useForm<ConnectionFormValues>({
+    resolver,
+    defaultValues: { serverUrl },
+  });
+
+  useEffect(() => {
+    form.reset({ serverUrl });
+  }, [serverUrl, form]);
+
+  // Re-run validation when the locale changes so existing error messages retranslate.
+  useEffect(() => {
+    if (form.formState.errors.serverUrl) {
+      form.trigger('serverUrl');
+    }
+  }, [t, form]);
+
+  const { isDirty } = form.formState;
+
+  function onSubmit(data: ConnectionFormValues) {
+    setServerUrl(data.serverUrl);
+    form.reset(data);
+    toast({
+      title: t('settings.general.serverUrl.updatedTitle'),
+      description: t('settings.general.serverUrl.updatedDescription', { url: data.serverUrl }),
+    });
+  }
+
+  return (
+    <div className="space-y-8 max-w-2xl">
+      <div className="grid grid-cols-2 gap-3">
+        <a
+          href="https://docs.voicebox.sh"
+          target="_blank"
+          rel="noopener noreferrer"
+          className="group flex items-center gap-3 rounded-lg border border-border/60 p-4 transition-colors hover:bg-muted/50"
+        >
+          <Book className="h-5 w-5 shrink-0 text-accent" strokeWidth={2.5} />
+          <div className="min-w-0 flex-1">
+            <div className="text-sm font-medium">{t('settings.general.docs.title')}</div>
+            <div className="text-xs text-muted-foreground">docs.voicebox.sh</div>
+          </div>
+          <ArrowUpRight className="h-4 w-4 text-muted-foreground/40 group-hover:text-muted-foreground transition-colors" />
+        </a>
+        <a
+          href="https://discord.gg/StkzQasqPS"
+          target="_blank"
+          rel="noopener noreferrer"
+          className="group flex items-center gap-3 rounded-lg border border-border/60 p-4 transition-colors hover:bg-muted/50"
+        >
+          <svg
+            className="h-5 w-5 shrink-0 text-accent"
+            viewBox="0 0 24 24"
+            fill="currentColor"
+            aria-hidden="true"
+          >
+            <path d="M20.317 4.37a19.791 19.791 0 0 0-4.885-1.515.074.074 0 0 0-.079.037c-.21.375-.444.864-.608 1.25a18.27 18.27 0 0 0-5.487 0 12.64 12.64 0 0 0-.617-1.25.077.077 0 0 0-.079-.037A19.736 19.736 0 0 0 3.677 4.37a.07.07 0 0 0-.032.027C.533 9.046-.32 13.58.099 18.057a.082.082 0 0 0 .031.057 19.9 19.9 0 0 0 5.993 3.03.078.078 0 0 0 .084-.028c.462-.63.874-1.295 1.226-1.994a.076.076 0 0 0-.041-.106 13.107 13.107 0 0 1-1.872-.892.077.077 0 0 1-.008-.128 10.2 10.2 0 0 0 .372-.292.074.074 0 0 1 .077-.01c3.928 1.793 8.18 1.793 12.062 0a.074.074 0 0 1 .078.01c.12.098.246.198.373.292a.077.077 0 0 1-.006.127 12.299 12.299 0 0 1-1.873.892.077.077 0 0 0-.041.107c.36.698.772 1.362 1.225 1.993a.076.076 0 0 0 .084.028 19.839 19.839 0 0 0 6.002-3.03.077.077 0 0 0 .032-.054c.5-5.177-.838-9.674-3.549-13.66a.061.061 0 0 0-.031-.03zM8.02 15.33c-1.183 0-2.157-1.085-2.157-2.419 0-1.333.956-2.419 2.157-2.419 1.21 0 2.176 1.095 2.157 2.42 0 1.333-.956 2.418-2.157 2.418zm7.975 0c-1.183 0-2.157-1.085-2.157-2.419 0-1.333.955-2.419 2.157-2.419 1.21 0 2.176 1.095 2.157 2.42 0 1.333-.946 2.418-2.157 2.418z" />
+          </svg>
+          <div className="min-w-0 flex-1">
+            <div className="text-sm font-medium">{t('settings.general.discord.title')}</div>
+            <div className="text-xs text-muted-foreground">
+              {t('settings.general.discord.subtitle')}
+            </div>
+          </div>
+          <ArrowUpRight className="h-4 w-4 text-muted-foreground/40 group-hover:text-muted-foreground transition-colors" />
+        </a>
+      </div>
+
+      <SettingSection>
+        <SettingRow
+          title={t('settings.general.serverUrl.title')}
+          description={t('settings.general.serverUrl.description')}
+          action={
+            <ConnectionStatus health={health} isLoading={isLoading} healthError={healthError} />
+          }
+        >
+          <Form {...form}>
+            <form onSubmit={form.handleSubmit(onSubmit)} className="flex gap-2">
+              <FormField
+                control={form.control}
+                name="serverUrl"
+                render={({ field }) => (
+                  <FormItem className="flex-1">
+                    <FormControl>
+                      <Input placeholder="http://127.0.0.1:17493" {...field} />
+                    </FormControl>
+                    <FormMessage />
+                  </FormItem>
+                )}
+              />
+              {isDirty && (
+                <Button type="submit" size="sm">
+                  {t('common.save')}
+                </Button>
+              )}
+            </form>
+          </Form>
+        </SettingRow>
+
+        <SettingRow
+          title={t('settings.general.keepServerRunning.title')}
+          description={t('settings.general.keepServerRunning.description')}
+          htmlFor="keepServerRunning"
+          action={
+            <Toggle
+              id="keepServerRunning"
+              checked={keepServerRunningOnClose}
+              onCheckedChange={(checked: boolean) => {
+                setKeepServerRunningOnClose(checked);
+                platform.lifecycle.setKeepServerRunning(checked).catch((error) => {
+                  console.error('Failed to sync setting to Rust:', error);
+                  setKeepServerRunningOnClose(!checked);
+                  toast({
+                    title: t('settings.general.keepServerRunning.failedTitle'),
+                    description: t('settings.general.keepServerRunning.failedDescription'),
+                    variant: 'destructive',
+                  });
+                  return;
+                });
+                toast({
+                  title: t('settings.general.keepServerRunning.updatedTitle'),
+                  description: checked
+                    ? t('settings.general.keepServerRunning.runningDescription')
+                    : t('settings.general.keepServerRunning.stoppedDescription'),
+                });
+              }}
+            />
+          }
+        />
+
+        {platform.metadata.isTauri && (
+          <SettingRow
+            title={t('settings.general.networkAccess.title')}
+            description={t('settings.general.networkAccess.description')}
+            htmlFor="allowNetworkAccess"
+            action={
+              <Toggle
+                id="allowNetworkAccess"
+                checked={mode === 'remote'}
+                onCheckedChange={(checked: boolean) => {
+                  setMode(checked ? 'remote' : 'local');
+                  toast({
+                    title: t('settings.general.networkAccess.updatedTitle'),
+                    description: checked
+                      ? t('settings.general.networkAccess.enabled')
+                      : t('settings.general.networkAccess.disabled'),
+                  });
+                }}
+              />
+            }
+          />
+        )}
+
+        <SettingRow
+          title={t('settings.language.label')}
+          description={t('settings.language.description')}
+          action={<LanguageSelect />}
+        />
+      </SettingSection>
+
+      <ApiReferenceCard serverUrl={serverUrl} />
+
+      {platform.metadata.isTauri && <UpdatesSection />}
+    </div>
+  );
+}
+
+function ConnectionStatus({
+  health,
+  isLoading,
+  healthError,
+}: {
+  health: ReturnType<typeof useServerHealth>['data'];
+  isLoading: boolean;
+  healthError: ReturnType<typeof useServerHealth>['error'];
+}) {
+  const { t } = useTranslation();
+  if (isLoading) {
+    return (
+      <div className="flex items-center gap-2 rounded-full border border-border/60 px-3 py-1">
+        <Loader2 className="h-3 w-3 animate-spin text-muted-foreground" />
+        <span className="text-xs text-muted-foreground">
+          {t('settings.general.connection.connecting')}
+        </span>
+      </div>
+    );
+  }
+  if (healthError) {
+    return (
+      <div className="flex items-center gap-2 rounded-full border border-destructive/30 px-3 py-1">
+        <span className="relative flex h-2 w-2">
+          <span className="absolute inline-flex h-full w-full rounded-full bg-destructive/40" />
+          <span className="relative inline-flex h-2 w-2 rounded-full bg-destructive" />
+        </span>
+        <span className="text-xs text-destructive">{t('settings.general.connection.offline')}</span>
+      </div>
+    );
+  }
+  if (health) {
+    return (
+      <div className="flex items-center gap-2 rounded-full border border-accent/30 px-3 py-1">
+        <span className="relative flex h-2 w-2">
+          <span className="absolute inline-flex h-full w-full animate-ping rounded-full bg-accent/60" />
+          <span className="relative inline-flex h-2 w-2 rounded-full bg-accent shadow-[0_0_6px_1px_hsl(var(--accent)/0.5)]" />
+        </span>
+        <span className="text-xs text-muted-foreground">
+          {t('settings.general.connection.online')}
+        </span>
+      </div>
+    );
+  }
+  return null;
+}
+
+function UpdatesSection() {
+  const { t } = useTranslation();
+  const platform = usePlatform();
+  const { status, checkForUpdates, downloadAndInstall, restartAndInstall } = useAutoUpdater(false);
+  const [currentVersion, setCurrentVersion] = useState<string | null>('');
+  const isDev = !import.meta.env?.PROD;
+
+  useEffect(() => {
+    platform.metadata
+      .getVersion()
+      .then(setCurrentVersion)
+      .catch(() => setCurrentVersion(null));
+  }, [platform]);
+
+  const versionLabel = currentVersion ?? t('common.unknown');
+
+  return (
+    <SettingSection
+      title={t('settings.general.updates.title')}
+      description={`v${versionLabel}${isDev ? t('settings.general.updates.devSuffix') : ''}`}
+    >
+      {isDev ? (
+        <SettingRow
+          title={t('settings.general.updates.devMode.title')}
+          description={t('settings.general.updates.devMode.description')}
+        />
+      ) : (
+        <>
+          <SettingRow
+            title={t('settings.general.updates.check.title')}
+            description={
+              status.available
+                ? t('settings.general.updates.check.available', { version: status.version })
+                : status.checking
+                  ? t('settings.general.updates.check.checking')
+                  : t('settings.general.updates.check.upToDate')
+            }
+            action={
+              <Button
+                onClick={checkForUpdates}
+                disabled={status.checking || status.downloading || status.readyToInstall}
+                variant="outline"
+                size="sm"
+              >
+                <RefreshCw
+                  className={`h-3.5 w-3.5 mr-1.5 ${status.checking ? 'animate-spin' : ''}`}
+                />
+                {t('settings.general.updates.check.button')}
+              </Button>
+            }
+          />
+
+          {status.error && (
+            <SettingRow title={t('settings.general.updates.error')}>
+              <div className="flex items-center gap-2 text-sm text-destructive">
+                <AlertCircle className="h-4 w-4" />
+                {status.error}
+              </div>
+            </SettingRow>
+          )}
+
+          {status.available && !status.downloading && !status.readyToInstall && (
+            <SettingRow
+              title={t('settings.general.updates.download.title', { version: status.version })}
+              description={t('settings.general.updates.download.description')}
+              action={
+                <Button onClick={downloadAndInstall} size="sm">
+                  <Download className="h-3.5 w-3.5 mr-1.5" />
+                  {t('settings.general.updates.download.button')}
+                </Button>
+              }
+            />
+          )}
+
+          {status.downloading && (
+            <SettingRow title={t('settings.general.updates.downloading')}>
+              <div className="space-y-1.5">
+                <Progress value={status.downloadProgress} />
+                <div className="flex items-center justify-between text-xs text-muted-foreground">
+                  {status.downloadedBytes !== undefined &&
+                  status.totalBytes !== undefined &&
+                  status.totalBytes > 0 ? (
+                    <span>
+                      {(status.downloadedBytes / 1024 / 1024).toFixed(1)} MB /{' '}
+                      {(status.totalBytes / 1024 / 1024).toFixed(1)} MB
+                    </span>
+                  ) : (
+                    <span />
+                  )}
+                  {status.downloadProgress !== undefined && <span>{status.downloadProgress}%</span>}
+                </div>
+              </div>
+            </SettingRow>
+          )}
+
+          {status.readyToInstall && (
+            <SettingRow
+              title={t('settings.general.updates.ready.title')}
+              description={t('settings.general.updates.ready.description', {
+                version: status.version,
+              })}
+              action={
+                <Button onClick={restartAndInstall} size="sm">
+                  <RefreshCw className="h-3.5 w-3.5 mr-1.5" />
+                  {t('settings.general.updates.ready.button')}
+                </Button>
+              }
+            />
+          )}
+        </>
+      )}
+    </SettingSection>
+  );
+}
+
+function ApiReferenceCard({ serverUrl }: { serverUrl: string }) {
+  const { t } = useTranslation();
+  const endpoints = [
+    { method: 'POST', path: '/generate', label: t('settings.general.api.endpoints.generate') },
+    { method: 'GET', path: '/health', label: t('settings.general.api.endpoints.health') },
+    { method: 'GET', path: '/profiles', label: t('settings.general.api.endpoints.profiles') },
+    { method: 'GET', path: '/history', label: t('settings.general.api.endpoints.history') },
+  ];
+
+  return (
+    <div className="rounded-lg border border-border/60 p-4 space-y-3">
+      <div>
+        <h3 className="text-sm font-medium">{t('settings.general.api.title')}</h3>
+        <p className="text-sm text-muted-foreground">
+          <Trans
+            i18nKey="settings.general.api.description"
+            values={{ url: serverUrl }}
+            components={{
+              code: <code className="text-xs bg-muted px-1 py-0.5 rounded font-mono" />,
+            }}
+          />
+        </p>
+      </div>
+      <div className="space-y-1">
+        {endpoints.map((ep) => (
+          <div key={ep.path} className="flex items-center gap-2.5 py-1">
+            <span
+              className={`text-[10px] font-mono font-semibold w-9 text-center rounded px-1 py-px ${
+                ep.method === 'POST' ? 'bg-accent/10 text-accent' : 'bg-muted text-muted-foreground'
+              }`}
+            >
+              {ep.method}
+            </span>
+            <code className="text-xs font-mono text-muted-foreground">{ep.path}</code>
+            <span className="text-xs text-muted-foreground/50 ml-auto">{ep.label}</span>
+          </div>
+        ))}
+      </div>
+      <p className="text-xs text-muted-foreground">
+        <a
+          href={`${serverUrl}/docs`}
+          target="_blank"
+          rel="noopener noreferrer"
+          className="text-accent hover:underline"
+        >
+          {t('settings.general.api.viewReference')}
+        </a>
+      </p>
+    </div>
+  );
+}

app/src/components/ServerTab/GenerationPage.tsx

@@ -0,0 +1,142 @@
+import { FolderOpen } from 'lucide-react';
+import { useCallback, useEffect, useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import { Button } from '@/components/ui/button';
+import { Slider } from '@/components/ui/slider';
+import { Toggle } from '@/components/ui/toggle';
+import { usePlatform } from '@/platform/PlatformContext';
+import { useServerStore } from '@/stores/serverStore';
+import { SettingRow, SettingSection } from './SettingRow';
+
+export function GenerationPage() {
+  const { t } = useTranslation();
+  const platform = usePlatform();
+  const serverUrl = useServerStore((state) => state.serverUrl);
+  const maxChunkChars = useServerStore((state) => state.maxChunkChars);
+  const setMaxChunkChars = useServerStore((state) => state.setMaxChunkChars);
+  const crossfadeMs = useServerStore((state) => state.crossfadeMs);
+  const setCrossfadeMs = useServerStore((state) => state.setCrossfadeMs);
+  const normalizeAudio = useServerStore((state) => state.normalizeAudio);
+  const setNormalizeAudio = useServerStore((state) => state.setNormalizeAudio);
+  const autoplayOnGenerate = useServerStore((state) => state.autoplayOnGenerate);
+  const setAutoplayOnGenerate = useServerStore((state) => state.setAutoplayOnGenerate);
+  const [opening, setOpening] = useState(false);
+  const [generationsPath, setGenerationsPath] = useState<string | null>(null);
+
+  useEffect(() => {
+    fetch(`${serverUrl}/health/filesystem`)
+      .then((res) => res.json())
+      .then((data) => {
+        const genDir = data.directories?.find((d: { path: string }) =>
+          d.path.includes('generations'),
+        );
+        if (genDir?.path) setGenerationsPath(genDir.path);
+      })
+      .catch(() => {});
+  }, [serverUrl]);
+
+  const openGenerationsFolder = useCallback(async () => {
+    if (!generationsPath) return;
+    setOpening(true);
+    try {
+      await platform.filesystem.openPath(generationsPath);
+    } catch (e) {
+      console.error('Failed to open generations folder:', e);
+    } finally {
+      setOpening(false);
+    }
+  }, [platform, generationsPath]);
+
+  return (
+    <div className="space-y-8 max-w-2xl">
+      <SettingSection
+        title={t('settings.generation.title')}
+        description={t('settings.generation.description')}
+      >
+        <SettingRow
+          title={t('settings.generation.chunkLimit.title')}
+          description={t('settings.generation.chunkLimit.description')}
+          action={
+            <span className="text-sm tabular-nums text-muted-foreground">
+              {t('settings.generation.chunkLimit.value', { chars: maxChunkChars })}
+            </span>
+          }
+        >
+          <Slider
+            id="maxChunkChars"
+            value={[maxChunkChars]}
+            onValueChange={([value]) => setMaxChunkChars(value)}
+            min={100}
+            max={5000}
+            step={50}
+            aria-label={t('settings.generation.chunkLimit.title')}
+          />
+        </SettingRow>
+
+        <SettingRow
+          title={t('settings.generation.crossfade.title')}
+          description={t('settings.generation.crossfade.description')}
+          action={
+            <span className="text-sm tabular-nums text-muted-foreground">
+              {crossfadeMs === 0
+                ? t('settings.generation.crossfade.cut')
+                : t('settings.generation.crossfade.ms', { ms: crossfadeMs })}
+            </span>
+          }
+        >
+          <Slider
+            id="crossfadeMs"
+            value={[crossfadeMs]}
+            onValueChange={([value]) => setCrossfadeMs(value)}
+            min={0}
+            max={200}
+            step={10}
+            aria-label={t('settings.generation.crossfade.title')}
+          />
+        </SettingRow>
+
+        <SettingRow
+          title={t('settings.generation.normalize.title')}
+          description={t('settings.generation.normalize.description')}
+          htmlFor="normalizeAudio"
+          action={
+            <Toggle
+              id="normalizeAudio"
+              checked={normalizeAudio}
+              onCheckedChange={setNormalizeAudio}
+            />
+          }
+        />
+
+        <SettingRow
+          title={t('settings.generation.autoplay.title')}
+          description={t('settings.generation.autoplay.description')}
+          htmlFor="autoplayOnGenerate"
+          action={
+            <Toggle
+              id="autoplayOnGenerate"
+              checked={autoplayOnGenerate}
+              onCheckedChange={setAutoplayOnGenerate}
+            />
+          }
+        />
+
+        <SettingRow
+          title={t('settings.generation.folder.title')}
+          description={generationsPath ?? t('settings.generation.folder.description')}
+          action={
+            <Button
+              variant="outline"
+              size="sm"
+              onClick={openGenerationsFolder}
+              disabled={opening || !generationsPath}
+            >
+              <FolderOpen className="h-3.5 w-3.5 mr-1.5" />
+              {t('settings.generation.folder.open')}
+            </Button>
+          }
+        />
+      </SettingSection>
+    </div>
+  );
+}

app/src/components/ServerTab/GpuPage.tsx

@@ -0,0 +1,407 @@
+import { useQuery, useQueryClient } from '@tanstack/react-query';
+import { AlertCircle, Cpu, Download, Loader2, RotateCw, Trash2 } from 'lucide-react';
+import { useCallback, useEffect, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import { Button } from '@/components/ui/button';
+import { Progress } from '@/components/ui/progress';
+import { apiClient } from '@/lib/api/client';
+import type { CudaDownloadProgress, HealthResponse } from '@/lib/api/types';
+import { useServerHealth } from '@/lib/hooks/useServer';
+import { usePlatform } from '@/platform/PlatformContext';
+import { useServerStore } from '@/stores/serverStore';
+import { SettingRow, SettingSection } from './SettingRow';
+
+type RestartPhase = 'idle' | 'stopping' | 'waiting' | 'ready';
+
+function AppleLogo({ className }: { className?: string }) {
+  return (
+    <svg className={className} viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
+      <path d="M18.71 19.5c-.83 1.24-1.71 2.45-3.05 2.47-1.34.03-1.77-.79-3.29-.79-1.53 0-2 .77-3.27.82-1.31.05-2.3-1.32-3.14-2.53C4.25 17 2.94 12.45 4.7 9.39c.87-1.52 2.43-2.48 4.12-2.51 1.28-.02 2.5.87 3.29.87.78 0 2.26-1.07 3.8-.91.65.03 2.47.26 3.64 1.98-.09.06-2.17 1.28-2.15 3.81.03 3.02 2.65 4.03 2.68 4.04-.03.07-.42 1.44-1.38 2.83M13 3.5c.73-.83 1.94-1.46 2.94-1.5.13 1.17-.34 2.35-1.04 3.19-.69.85-1.83 1.51-2.95 1.42-.15-1.15.41-2.35 1.05-3.11z" />
+    </svg>
+  );
+}
+
+function GpuIcon({ className }: { className?: string }) {
+  return (
+    <svg
+      className={className}
+      viewBox="0 0 24 24"
+      fill="none"
+      stroke="currentColor"
+      strokeWidth="1.5"
+      strokeLinecap="round"
+      strokeLinejoin="round"
+      aria-hidden="true"
+    >
+      <rect x="4" y="6" width="16" height="12" rx="2" />
+      <path d="M2 10h2M2 14h2M20 10h2M20 14h2" />
+      <path d="M9 10h6M9 14h4" />
+    </svg>
+  );
+}
+
+function GpuInfoCard({ health }: { health: HealthResponse }) {
+  const { t } = useTranslation();
+  const hasGpu = health.gpu_available && health.gpu_type;
+
+  const gpuName = hasGpu
+    ? health.gpu_type!.replace(/^(CUDA|ROCm|MPS|Metal|XPU|DirectML)\s*\((.+)\)$/, '$2') ||
+      health.gpu_type!
+    : null;
+  const gpuBackend = hasGpu ? health.gpu_type!.replace(/\s*\(.+\)$/, '') : null;
+  const isApple = gpuBackend === 'MPS' || gpuBackend === 'Metal';
+  const showBackendVariant = health.backend_variant && health.backend_variant !== 'cpu';
+
+  return (
+    <div className="rounded-lg border border-border/60 p-4">
+      <div className="flex items-center gap-3">
+        {hasGpu ? (
+          isApple ? (
+            <AppleLogo className="h-5 w-5 shrink-0 text-muted-foreground" />
+          ) : (
+            <GpuIcon className="h-5 w-5 shrink-0 text-accent" />
+          )
+        ) : (
+          <Cpu className="h-5 w-5 shrink-0 text-muted-foreground" />
+        )}
+        <div className="flex-1 min-w-0 space-y-0.5">
+          <div className="text-sm font-medium">{hasGpu ? gpuName : t('settings.gpu.cpuOnly')}</div>
+          <div className="flex flex-wrap items-center gap-x-3 gap-y-1 text-xs text-muted-foreground">
+            {hasGpu ? (
+              <>
+                <span>{gpuBackend}</span>
+                {showBackendVariant && (
+                  <>
+                    <span className="text-border">|</span>
+                    <span className="uppercase">{health.backend_variant}</span>
+                  </>
+                )}
+                {health.vram_used_mb != null && health.vram_used_mb > 0 && (
+                  <>
+                    <span className="text-border">|</span>
+                    <span>
+                      {t('settings.gpu.vramUsed', { mb: health.vram_used_mb.toFixed(0) })}
+                    </span>
+                  </>
+                )}
+              </>
+            ) : (
+              <span>{t('settings.gpu.noAcceleration')}</span>
+            )}
+          </div>
+        </div>
+        {hasGpu && (
+          <div className="flex items-center gap-2 rounded-full border border-accent/30 px-2.5 py-0.5">
+            <span className="relative flex h-1.5 w-1.5">
+              <span className="absolute inline-flex h-full w-full animate-ping rounded-full bg-accent/60" />
+              <span className="relative inline-flex h-1.5 w-1.5 rounded-full bg-accent shadow-[0_0_4px_1px_hsl(var(--accent)/0.4)]" />
+            </span>
+            <span className="text-[10px] font-medium text-muted-foreground">
+              {t('settings.gpu.active')}
+            </span>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
+
+export function GpuPage() {
+  const { t } = useTranslation();
+  const platform = usePlatform();
+  const queryClient = useQueryClient();
+  const serverUrl = useServerStore((state) => state.serverUrl);
+  const { data: health } = useServerHealth();
+
+  const [restartPhase, setRestartPhase] = useState<RestartPhase>('idle');
+  const [error, setError] = useState<string | null>(null);
+  const [downloadProgress, setDownloadProgress] = useState<CudaDownloadProgress | null>(null);
+  const healthPollRef = useRef<ReturnType<typeof setInterval> | null>(null);
+  // Hold the latest `t` in a ref so the CUDA progress SSE effect below doesn't
+  // tear down and reconnect the EventSource every time the language changes.
+  const tRef = useRef(t);
+  useEffect(() => {
+    tRef.current = t;
+  }, [t]);
+
+  const {
+    data: cudaStatus,
+    isLoading: _cudaStatusLoading,
+    refetch: refetchCudaStatus,
+  } = useQuery({
+    queryKey: ['cuda-status', serverUrl],
+    queryFn: () => apiClient.getCudaStatus(),
+    refetchInterval: (query) => (query.state.status === 'pending' ? false : 10000),
+    retry: 1,
+    enabled: !!health,
+  });
+
+  const isCurrentlyCuda = health?.backend_variant === 'cuda';
+  const cudaAvailable = cudaStatus?.available ?? false;
+  const cudaDownloading = cudaStatus?.downloading ?? false;
+
+  useEffect(() => {
+    return () => {
+      if (healthPollRef.current) {
+        clearInterval(healthPollRef.current);
+        healthPollRef.current = null;
+      }
+    };
+  }, []);
+
+  useEffect(() => {
+    if (!cudaDownloading || !serverUrl) return;
+
+    const eventSource = new EventSource(`${serverUrl}/backend/cuda-progress`);
+
+    eventSource.onmessage = (event) => {
+      try {
+        const data = JSON.parse(event.data) as CudaDownloadProgress;
+        setDownloadProgress(data);
+
+        if (data.status === 'complete') {
+          eventSource.close();
+          setDownloadProgress(null);
+          refetchCudaStatus();
+        } else if (data.status === 'error') {
+          eventSource.close();
+          setError(data.error || tRef.current('settings.gpu.errors.downloadFailed'));
+          setDownloadProgress(null);
+          refetchCudaStatus();
+        }
+      } catch (e) {
+        console.error('Error parsing CUDA progress event:', e);
+      }
+    };
+
+    eventSource.onerror = () => {
+      eventSource.close();
+    };
+
+    return () => {
+      eventSource.close();
+    };
+  }, [cudaDownloading, serverUrl, refetchCudaStatus]);
+
+  const clearHealthPolling = useCallback(() => {
+    if (healthPollRef.current) {
+      clearInterval(healthPollRef.current);
+      healthPollRef.current = null;
+    }
+  }, []);
+
+  const startHealthPolling = useCallback(() => {
+    clearHealthPolling();
+
+    healthPollRef.current = setInterval(async () => {
+      try {
+        const result = await apiClient.getHealth();
+        if (result.status === 'healthy') {
+          clearHealthPolling();
+          setRestartPhase('ready');
+          queryClient.invalidateQueries();
+          setTimeout(() => setRestartPhase('idle'), 2000);
+        }
+      } catch {
+        // Server still down, keep polling
+      }
+    }, 1000);
+  }, [queryClient, clearHealthPolling]);
+
+  const restartServerWithPolling = useCallback(
+    async (errorMessage: string) => {
+      setRestartPhase('stopping');
+      try {
+        await platform.lifecycle.restartServer();
+        setRestartPhase('waiting');
+        startHealthPolling();
+      } catch (e: unknown) {
+        clearHealthPolling();
+        setRestartPhase('idle');
+        throw new Error(e instanceof Error ? e.message : errorMessage);
+      }
+    },
+    [platform, startHealthPolling, clearHealthPolling],
+  );
+
+  const handleDownload = async () => {
+    setError(null);
+    try {
+      await apiClient.downloadCudaBackend();
+      refetchCudaStatus();
+    } catch (e: unknown) {
+      const msg = e instanceof Error ? e.message : t('settings.gpu.errors.downloadStart');
+      if (msg.includes('already downloaded')) {
+        refetchCudaStatus();
+      } else {
+        setError(msg);
+      }
+    }
+  };
+
+  const handleRestart = async () => {
+    setError(null);
+    try {
+      await restartServerWithPolling(t('settings.gpu.errors.restartFailed'));
+    } catch (e: unknown) {
+      setError(e instanceof Error ? e.message : t('settings.gpu.errors.restartFailed'));
+    }
+  };
+
+  const handleSwitchToCpu = async () => {
+    setError(null);
+    setRestartPhase('stopping');
+    try {
+      await apiClient.deleteCudaBackend();
+      await restartServerWithPolling(t('settings.gpu.errors.switchCpu'));
+    } catch (e: unknown) {
+      setError(e instanceof Error ? e.message : t('settings.gpu.errors.switchCpu'));
+      refetchCudaStatus();
+    }
+  };
+
+  const handleDelete = async () => {
+    setError(null);
+    try {
+      await apiClient.deleteCudaBackend();
+      refetchCudaStatus();
+    } catch (e: unknown) {
+      setError(e instanceof Error ? e.message : t('settings.gpu.errors.deleteCuda'));
+    }
+  };
+
+  const formatBytes = (bytes: number): string => {
+    if (bytes === 0) return '0 B';
+    const k = 1024;
+    const sizes = ['B', 'KB', 'MB', 'GB'];
+    const i = Math.floor(Math.log(bytes) / Math.log(k));
+    return `${(bytes / k ** i).toFixed(1)} ${sizes[i]}`;
+  };
+
+  if (!health) return null;
+
+  const hasNativeGpu =
+    health.gpu_available &&
+    !isCurrentlyCuda &&
+    health.gpu_type &&
+    !health.gpu_type.includes('CUDA');
+
+  return (
+    <div className="space-y-8 max-w-2xl">
+      <GpuInfoCard health={health} />
+
+      {!hasNativeGpu && !isCurrentlyCuda && (
+        <SettingSection
+          title={t('settings.gpu.cuda.title')}
+          description={t('settings.gpu.cuda.description')}
+        >
+          {cudaDownloading && downloadProgress && (
+            <SettingRow title={t('settings.gpu.cuda.downloading')}>
+              <div className="space-y-1.5">
+                <Progress value={downloadProgress.progress} className="h-2" />
+                <div className="flex items-center justify-between text-xs text-muted-foreground">
+                  <span>
+                    {downloadProgress.filename ||
+                      (cudaAvailable
+                        ? t('settings.gpu.cuda.updating')
+                        : t('settings.gpu.cuda.downloadingShort'))}
+                  </span>
+                  <span>
+                    {downloadProgress.total > 0
+                      ? `${formatBytes(downloadProgress.current)} / ${formatBytes(downloadProgress.total)}`
+                      : `${downloadProgress.progress.toFixed(1)}%`}
+                  </span>
+                </div>
+              </div>
+            </SettingRow>
+          )}
+
+          {restartPhase !== 'idle' && (
+            <SettingRow
+              title={
+                restartPhase === 'ready'
+                  ? t('settings.gpu.restart.ready')
+                  : restartPhase === 'waiting'
+                    ? t('settings.gpu.restart.waiting')
+                    : t('settings.gpu.restart.stopping')
+              }
+              action={<Loader2 className="h-4 w-4 animate-spin text-muted-foreground" />}
+            />
+          )}
+
+          {error && (
+            <SettingRow title={t('common.error')}>
+              <div className="flex items-center gap-2 text-sm text-destructive">
+                <AlertCircle className="h-4 w-4 shrink-0" />
+                <span>{error}</span>
+              </div>
+            </SettingRow>
+          )}
+
+          {restartPhase === 'idle' && !cudaDownloading && (
+            <>
+              {!cudaAvailable && !isCurrentlyCuda && (
+                <SettingRow
+                  title={t('settings.gpu.download.title')}
+                  description={t('settings.gpu.download.description')}
+                  action={
+                    <Button onClick={handleDownload} size="sm">
+                      <Download className="h-3.5 w-3.5 mr-1.5" />
+                      {t('settings.gpu.download.button')}
+                    </Button>
+                  }
+                />
+              )}
+
+              {cudaAvailable && !isCurrentlyCuda && platform.metadata.isTauri && (
+                <SettingRow
+                  title={t('settings.gpu.switchToCuda.title')}
+                  description={t('settings.gpu.switchToCuda.description')}
+                  action={
+                    <Button onClick={handleRestart} size="sm">
+                      <RotateCw className="h-3.5 w-3.5 mr-1.5" />
+                      {t('settings.gpu.switchToCuda.button')}
+                    </Button>
+                  }
+                />
+              )}
+
+              {isCurrentlyCuda && platform.metadata.isTauri && (
+                <SettingRow
+                  title={t('settings.gpu.switchToCpu.title')}
+                  description={t('settings.gpu.switchToCpu.description')}
+                  action={
+                    <Button onClick={handleSwitchToCpu} variant="outline" size="sm">
+                      <RotateCw className="h-3.5 w-3.5 mr-1.5" />
+                      {t('settings.gpu.switchToCpu.button')}
+                    </Button>
+                  }
+                />
+              )}
+
+              {cudaAvailable && !isCurrentlyCuda && (
+                <SettingRow
+                  title={t('settings.gpu.remove.title')}
+                  description={t('settings.gpu.remove.description')}
+                  action={
+                    <Button
+                      onClick={handleDelete}
+                      variant="ghost"
+                      size="sm"
+                      className="text-muted-foreground hover:text-destructive"
+                    >
+                      <Trash2 className="h-3.5 w-3.5 mr-1.5" />
+                      {t('settings.gpu.remove.button')}
+                    </Button>
+                  }
+                />
+              )}
+            </>
+          )}
+        </SettingSection>
+      )}
+
+      <p className="text-xs text-muted-foreground/60 leading-relaxed">{t('settings.gpu.footer')}</p>
+    </div>
+  );
+}

app/src/components/ServerTab/LanguageSelect.tsx

@@ -0,0 +1,34 @@
+import { useTranslation } from 'react-i18next';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '@/components/ui/select';
+import { type LanguageCode, SUPPORTED_LANGUAGES } from '@/i18n';
+
+export function LanguageSelect() {
+  const { i18n } = useTranslation();
+  const current = SUPPORTED_LANGUAGES.find((l) => l.code === i18n.language)?.code ?? 'en';
+
+  return (
+    <Select
+      value={current}
+      onValueChange={(value) => {
+        void i18n.changeLanguage(value as LanguageCode);
+      }}
+    >
+      <SelectTrigger className="h-9 w-[180px]">
+        <SelectValue />
+      </SelectTrigger>
+      <SelectContent>
+        {SUPPORTED_LANGUAGES.map((lang) => (
+          <SelectItem key={lang.code} value={lang.code}>
+            {lang.label}
+          </SelectItem>
+        ))}
+      </SelectContent>
+    </Select>
+  );
+}

app/src/components/ServerTab/LogsPage.tsx

@@ -0,0 +1,101 @@
+import { useEffect, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import { Button } from '@/components/ui/button';
+import { cn } from '@/lib/utils/cn';
+import { type LogEntry, useLogStore } from '@/stores/logStore';
+
+function formatTime(timestamp: number): string {
+  const d = new Date(timestamp);
+  return d.toLocaleTimeString(undefined, {
+    hour: '2-digit',
+    minute: '2-digit',
+    second: '2-digit',
+    hour12: false,
+  });
+}
+
+function LogLine({ entry }: { entry: LogEntry }) {
+  return (
+    <div className="flex gap-3 font-mono text-xs leading-5 hover:bg-muted/30">
+      <span className="text-muted-foreground/50 select-none shrink-0">
+        {formatTime(entry.timestamp)}
+      </span>
+      <span
+        className={cn(
+          'whitespace-pre-wrap break-all',
+          entry.stream === 'stderr' ? 'text-orange-400/80' : 'text-muted-foreground',
+        )}
+      >
+        {entry.line}
+      </span>
+    </div>
+  );
+}
+
+export function LogsPage() {
+  const { t } = useTranslation();
+  const entries = useLogStore((s) => s.entries);
+  const clear = useLogStore((s) => s.clear);
+  const containerRef = useRef<HTMLDivElement>(null);
+  const [autoScroll, setAutoScroll] = useState(true);
+
+  // Auto-scroll to bottom when new entries arrive
+  useEffect(() => {
+    if (autoScroll && containerRef.current) {
+      containerRef.current.scrollTop = containerRef.current.scrollHeight;
+    }
+  }, [entries.length, autoScroll]);
+
+  // Detect manual scroll to disable auto-scroll
+  const handleScroll = () => {
+    const el = containerRef.current;
+    if (!el) return;
+    const atBottom = el.scrollHeight - el.scrollTop - el.clientHeight < 40;
+    setAutoScroll(atBottom);
+  };
+
+  return (
+    <div className="flex flex-col h-full min-h-0">
+      <div className="flex items-center justify-between mb-3">
+        <div>
+          <h3 className="text-sm font-medium">{t('settings.logs.title')}</h3>
+          <p className="text-sm text-muted-foreground">
+            {t('settings.logs.lineCount', { count: entries.length })}
+          </p>
+        </div>
+        <div className="flex items-center gap-2">
+          {!autoScroll && (
+            <Button
+              variant="outline"
+              size="sm"
+              onClick={() => {
+                setAutoScroll(true);
+                containerRef.current?.scrollTo({ top: containerRef.current.scrollHeight });
+              }}
+            >
+              {t('settings.logs.scrollToBottom')}
+            </Button>
+          )}
+          <Button variant="outline" size="sm" onClick={clear}>
+            {t('settings.logs.clear')}
+          </Button>
+        </div>
+      </div>
+
+      <div
+        ref={containerRef}
+        onScroll={handleScroll}
+        className="flex-1 min-h-0 overflow-y-auto rounded-md border bg-black/20 p-3"
+      >
+        {entries.length === 0 ? (
+          <div className="text-sm text-muted-foreground/50 font-mono space-y-1">
+            <p>{t('settings.logs.empty')}</p>
+            {!import.meta.env?.PROD && <p>{t('settings.logs.devHint')}</p>}
+          </div>
+        ) : (
+          entries.map((entry) => <LogLine key={entry.id} entry={entry} />)
+        )}
+      </div>
+    </div>
+  );
+}

app/src/components/ServerTab/ServerTab.tsx

@@ -1,35 +1,72 @@
-import { ConnectionForm } from '@/components/ServerSettings/ConnectionForm';
-import { GenerationSettings } from '@/components/ServerSettings/GenerationSettings';
-import { GpuAcceleration } from '@/components/ServerSettings/GpuAcceleration';
-import { UpdateStatus } from '@/components/ServerSettings/UpdateStatus';
+import { Link, Outlet, useMatchRoute } from '@tanstack/react-router';
+import { useTranslation } from 'react-i18next';
 import { BOTTOM_SAFE_AREA_PADDING } from '@/lib/constants/ui';
 import { cn } from '@/lib/utils/cn';
 import { usePlatform } from '@/platform/PlatformContext';
 import { usePlayerStore } from '@/stores/playerStore';
 
-export function ServerTab() {
+interface SettingsTab {
+  labelKey: string;
+  path:
+    | '/settings'
+    | '/settings/generation'
+    | '/settings/gpu'
+    | '/settings/logs'
+    | '/settings/changelog'
+    | '/settings/about';
+  tauriOnly?: boolean;
+}
+
+const tabs: SettingsTab[] = [
+  { labelKey: 'settings.tabs.general', path: '/settings' },
+  { labelKey: 'settings.tabs.generation', path: '/settings/generation' },
+  { labelKey: 'settings.tabs.gpu', path: '/settings/gpu', tauriOnly: true },
+  { labelKey: 'settings.tabs.logs', path: '/settings/logs', tauriOnly: true },
+  { labelKey: 'settings.tabs.changelog', path: '/settings/changelog' },
+  { labelKey: 'settings.tabs.about', path: '/settings/about' },
+];
+
+export function SettingsLayout() {
+  const { t } = useTranslation();
   const platform = usePlatform();
   const isPlayerVisible = !!usePlayerStore((state) => state.audioUrl);
+  const matchRoute = useMatchRoute();
+
   return (
-    <div
-      className={cn('overflow-y-auto flex flex-col', isPlayerVisible && BOTTOM_SAFE_AREA_PADDING)}
-    >
-      <div className="grid gap-4 md:grid-cols-2">
-        <ConnectionForm />
-        <GenerationSettings />
-        {platform.metadata.isTauri && <GpuAcceleration />}
-        {platform.metadata.isTauri && <UpdateStatus />}
-      </div>
-      <div className="py-8 text-center text-sm text-muted-foreground">
-        Created by{' '}
-        <a
-          href="https://github.com/jamiepine"
-          target="_blank"
-          rel="noopener noreferrer"
-          className="text-accent hover:underline"
-        >
-          Jamie Pine
-        </a>
+    <div className="flex flex-col h-full min-h-0">
+      <nav className="flex gap-1 border-b shrink-0">
+        {tabs.map((tab) => {
+          if (tab.tauriOnly && !platform.metadata.isTauri) return null;
+
+          const isActive =
+            tab.path === '/settings'
+              ? matchRoute({ to: tab.path, fuzzy: false })
+              : matchRoute({ to: tab.path });
+
+          return (
+            <Link
+              key={tab.path}
+              to={tab.path}
+              className={cn(
+                'px-4 py-2 text-sm font-medium transition-colors border-b-2 -mb-px',
+                isActive
+                  ? 'border-accent text-foreground'
+                  : 'border-transparent text-muted-foreground hover:text-foreground hover:border-muted-foreground/30',
+              )}
+            >
+              {t(tab.labelKey)}
+            </Link>
+          );
+        })}
+      </nav>
+
+      <div
+        className={cn(
+          'flex-1 overflow-y-auto pt-6 pb-6 px-2 -mx-2',
+          isPlayerVisible && BOTTOM_SAFE_AREA_PADDING,
+        )}
+      >
+        <Outlet />
       </div>
     </div>
   );

app/src/components/ServerTab/SettingRow.tsx

@@ -0,0 +1,62 @@
+import type { ReactNode } from 'react';
+
+/**
+ * A section header with title and optional description, separated by a border.
+ */
+export function SettingSection({
+  title,
+  description,
+  children,
+}: {
+  title?: string;
+  description?: string;
+  children: ReactNode;
+}) {
+  return (
+    <div className="space-y-1">
+      {title && <h3 className="text-sm font-medium">{title}</h3>}
+      {description && <p className="text-sm text-muted-foreground">{description}</p>}
+      <div className={`${title || description ? 'pt-3' : ''} space-y-0 divide-y divide-border/60`}>
+        {children}
+      </div>
+    </div>
+  );
+}
+
+/**
+ * A single settings row: label+description on the left, action on the right.
+ * Use for toggles, inputs, buttons, badges — any control type.
+ */
+export function SettingRow({
+  title,
+  description,
+  htmlFor,
+  action,
+  children,
+}: {
+  title: string;
+  description?: string;
+  htmlFor?: string;
+  /** Right-aligned control (checkbox, button, badge, etc.) */
+  action?: ReactNode;
+  /** Full-width content rendered below the label row (for sliders, inputs, etc.) */
+  children?: ReactNode;
+}) {
+  return (
+    <div className="py-3">
+      <div className="flex items-center justify-between gap-8">
+        <div className="min-w-0">
+          <label
+            htmlFor={htmlFor}
+            className={`text-sm font-medium leading-none select-none ${htmlFor ? 'cursor-pointer' : ''}`}
+          >
+            {title}
+          </label>
+          {description && <p className="text-sm text-muted-foreground mt-0.5">{description}</p>}
+        </div>
+        {action && <div className="shrink-0">{action}</div>}
+      </div>
+      {children && <div className="mt-3">{children}</div>}
+    </div>
+  );
+}

app/src/components/Sidebar.tsx

@@ -1,7 +1,11 @@
 import { Link, useMatchRoute } from '@tanstack/react-router';
-import { AudioLines, Box, Mic, Server, Speaker, Volume2, Wand2 } from 'lucide-react';
+import { AudioLines, Box, Mic, Settings, Speaker, Volume2, Wand2 } from 'lucide-react';
+import { useEffect, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import voiceboxLogo from '@/assets/voicebox-logo.png';
 import { cn } from '@/lib/utils/cn';
+import { usePlatform } from '@/platform/PlatformContext';
+import type { UpdateStatus } from '@/platform/types';
 import { usePlayerStore } from '@/stores/playerStore';
 import { version } from '../../package.json';
 
@@ -10,18 +14,23 @@ interface SidebarProps {
 }
 
 const tabs = [
-  { id: 'main', path: '/', icon: Volume2, label: 'Generate' },
-  { id: 'stories', path: '/stories', icon: AudioLines, label: 'Stories' },
-  { id: 'voices', path: '/voices', icon: Mic, label: 'Voices' },
-  { id: 'effects', path: '/effects', icon: Wand2, label: 'Effects' },
-  { id: 'audio', path: '/audio', icon: Speaker, label: 'Audio' },
-  { id: 'models', path: '/models', icon: Box, label: 'Models' },
-  { id: 'server', path: '/server', icon: Server, label: 'Server' },
+  { id: 'main', path: '/', icon: Volume2, labelKey: 'nav.generate' },
+  { id: 'stories', path: '/stories', icon: AudioLines, labelKey: 'nav.stories' },
+  { id: 'voices', path: '/voices', icon: Mic, labelKey: 'nav.voices' },
+  { id: 'effects', path: '/effects', icon: Wand2, labelKey: 'nav.effects' },
+  { id: 'audio', path: '/audio', icon: Speaker, labelKey: 'nav.audio' },
+  { id: 'models', path: '/models', icon: Box, labelKey: 'nav.models' },
+  { id: 'settings', path: '/settings', icon: Settings, labelKey: 'nav.settings' },
 ];
 
 export function Sidebar({ isMacOS }: SidebarProps) {
+  const { t } = useTranslation();
   const matchRoute = useMatchRoute();
   const isPlayerOpen = !!usePlayerStore((s) => s.audioUrl);
+  const platform = usePlatform();
+
+  const [updateStatus, setUpdateStatus] = useState<UpdateStatus>(platform.updater.getStatus());
+  useEffect(() => platform.updater.subscribe(setUpdateStatus), [platform.updater]);
 
   return (
     <div
@@ -45,11 +54,15 @@ export function Sidebar({ isMacOS }: SidebarProps) {
 
       {/* Navigation Buttons */}
       <div className="flex flex-col gap-3">
-        {tabs.map((tab) => {
+        {tabs.map((tab, index) => {
           const Icon = tab.icon;
-          // For index route, use exact match; for others, use default matching
           const isActive =
-            tab.path === '/' ? matchRoute({ to: '/', exact: true }) : matchRoute({ to: tab.path });
+            tab.path === '/'
+              ? matchRoute({ to: '/', fuzzy: false })
+              : matchRoute({ to: tab.path, fuzzy: true });
+
+          // Accent fades as buttons get further from the logo
+          const accentOpacity = Math.max(0.08, 0.5 - index * 0.07);
 
           return (
             <Link
@@ -61,8 +74,8 @@ export function Sidebar({ isMacOS }: SidebarProps) {
                   ? 'bg-white/[0.07] text-foreground shadow-lg backdrop-blur-sm border border-white/[0.08]'
                   : 'text-muted-foreground hover:bg-muted/50',
               )}
-              title={tab.label}
-              aria-label={tab.label}
+              title={t(tab.labelKey)}
+              aria-label={t(tab.labelKey)}
             >
               {isActive && (
                 <div
@@ -70,7 +83,7 @@ export function Sidebar({ isMacOS }: SidebarProps) {
                   style={{
                     maskImage: 'linear-gradient(to bottom, black, transparent 60%)',
                     WebkitMaskImage: 'linear-gradient(to bottom, black, transparent 60%)',
-                    border: '1px solid hsl(var(--accent) / 0.5)',
+                    border: `1px solid hsl(var(--accent) / ${accentOpacity})`,
                   }}
                 />
               )}
@@ -82,10 +95,18 @@ export function Sidebar({ isMacOS }: SidebarProps) {
 
       {/* Version */}
       <div
-        className="mt-auto text-[10px] text-muted-foreground/50 transition-all duration-300"
+        className="mt-auto flex flex-col items-center gap-1.5 transition-all duration-300"
         style={{ paddingBottom: isPlayerOpen ? '7rem' : undefined }}
       >
-        v{version}
+        <span className="text-[10px] text-muted-foreground/50">v{version}</span>
+        {updateStatus.available && (
+          <Link
+            to="/settings"
+            className="text-[9px] font-semibold tracking-wide uppercase px-2 py-0.5 rounded-full bg-accent/15 text-accent hover:bg-accent/25 transition-colors"
+          >
+            {t('nav.updateBadge')}
+          </Link>
+        )}
       </div>
     </div>
   );

app/src/components/StoriesTab/StoryChatItem.tsx

@@ -2,6 +2,7 @@ import { useSortable } from '@dnd-kit/sortable';
 import { CSS } from '@dnd-kit/utilities';
 import { GripVertical, Mic, MoreHorizontal, Play, Trash2 } from 'lucide-react';
 import { useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import {
   DropdownMenu,
@@ -34,6 +35,7 @@ export function StoryChatItem({
   dragHandleProps,
   isDragging,
 }: StoryChatItemProps) {
+  const { t } = useTranslation();
   const seek = useStoryStore((state) => state.seek);
   const serverUrl = useServerStore((state) => state.serverUrl);
   const [avatarError, setAvatarError] = useState(false);
@@ -87,7 +89,7 @@ export function StoryChatItem({
               alt={`${item.profile_name} avatar`}
               className={cn(
                 'h-full w-full object-cover transition-all duration-200',
-                !isCurrentlyPlaying && 'grayscale'
+                !isCurrentlyPlaying && 'grayscale',
               )}
               onError={() => setAvatarError(true)}
             />
@@ -118,18 +120,26 @@ export function StoryChatItem({
       <div className="shrink-0">
         <DropdownMenu>
           <DropdownMenuTrigger asChild>
-            <Button variant="ghost" size="icon" className="h-8 w-8" aria-label="Actions">
+            <Button
+              variant="ghost"
+              size="icon"
+              className="h-8 w-8"
+              aria-label={t('history.actions.menu')}
+            >
               <MoreHorizontal className="h-4 w-4" />
             </Button>
           </DropdownMenuTrigger>
           <DropdownMenuContent align="end">
             <DropdownMenuItem onClick={handlePlay}>
               <Play className="mr-2 h-4 w-4" />
-              Play from here
+              {t('storyContent.itemActions.playFromHere')}
             </DropdownMenuItem>
-            <DropdownMenuItem onClick={onRemove} className="text-destructive focus:text-destructive">
+            <DropdownMenuItem
+              onClick={onRemove}
+              className="text-destructive focus:text-destructive"
+            >
               <Trash2 className="mr-2 h-4 w-4" />
-              Remove from Story
+              {t('storyContent.itemActions.removeFromStory')}
             </DropdownMenuItem>
           </DropdownMenuContent>
         </DropdownMenu>
@@ -139,15 +149,12 @@ export function StoryChatItem({
 }
 
 // Sortable wrapper component
-export function SortableStoryChatItem(props: Omit<StoryChatItemProps, 'dragHandleProps' | 'isDragging'>) {
-  const {
-    attributes,
-    listeners,
-    setNodeRef,
-    transform,
-    transition,
-    isDragging,
-  } = useSortable({ id: props.item.generation_id });
+export function SortableStoryChatItem(
+  props: Omit<StoryChatItemProps, 'dragHandleProps' | 'isDragging'>,
+) {
+  const { attributes, listeners, setNodeRef, transform, transition, isDragging } = useSortable({
+    id: props.item.generation_id,
+  });
 
   const style = {
     transform: CSS.Transform.toString(transform),
@@ -156,11 +163,7 @@ export function SortableStoryChatItem(props: Omit<StoryChatItemProps, 'dragHandl
 
   return (
     <div ref={setNodeRef} style={style} {...attributes}>
-      <StoryChatItem
-        {...props}
-        dragHandleProps={listeners}
-        isDragging={isDragging}
-      />
+      <StoryChatItem {...props} dragHandleProps={listeners} isDragging={isDragging} />
     </div>
   );
 }

app/src/components/StoriesTab/StoryContent.tsx

@@ -17,6 +17,7 @@ import { Link } from '@tanstack/react-router';
 import { AnimatePresence, motion } from 'framer-motion';
 import { Download, Plus } from 'lucide-react';
 import { useEffect, useMemo, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import Loader from 'react-loaders';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
@@ -36,6 +37,7 @@ import { useStoryStore } from '@/stores/storyStore';
 import { SortableStoryChatItem } from './StoryChatItem';
 
 export function StoryContent() {
+  const { t } = useTranslation();
   const selectedStoryId = useStoryStore((state) => state.selectedStoryId);
   const { data: story, isLoading } = useStory(selectedStoryId);
   const removeItem = useRemoveStoryItem();
@@ -147,7 +149,7 @@ export function StoryContent() {
       {
         onError: (error) => {
           toast({
-            title: 'Failed to remove item',
+            title: t('storyContent.toast.removeFailed'),
             description: error.message,
             variant: 'destructive',
           });
@@ -179,7 +181,7 @@ export function StoryContent() {
       {
         onError: (error) => {
           toast({
-            title: 'Failed to reorder items',
+            title: t('storyContent.toast.reorderFailed'),
             description: error.message,
             variant: 'destructive',
           });
@@ -199,7 +201,7 @@ export function StoryContent() {
       {
         onError: (error) => {
           toast({
-            title: 'Failed to export audio',
+            title: t('storyContent.toast.exportFailed'),
             description: error.message,
             variant: 'destructive',
           });
@@ -223,7 +225,7 @@ export function StoryContent() {
         },
         onError: (error) => {
           toast({
-            title: 'Failed to add generation',
+            title: t('storyContent.toast.addFailed'),
             description: error.message,
             variant: 'destructive',
           });
@@ -236,8 +238,8 @@ export function StoryContent() {
     return (
       <div className="flex items-center justify-center h-full text-muted-foreground">
         <div className="text-center">
-          <p className="text-lg font-medium mb-2">Select a story</p>
-          <p className="text-sm">Choose a story from the list to view its content</p>
+          <p className="text-lg font-medium mb-2">{t('storyContent.selectStory.title')}</p>
+          <p className="text-sm">{t('storyContent.selectStory.hint')}</p>
         </div>
       </div>
     );
@@ -246,7 +248,7 @@ export function StoryContent() {
   if (isLoading) {
     return (
       <div className="flex items-center justify-center h-full">
-        <div className="text-muted-foreground">Loading story...</div>
+        <div className="text-muted-foreground">{t('storyContent.loading')}</div>
       </div>
     );
   }
@@ -255,8 +257,8 @@ export function StoryContent() {
     return (
       <div className="flex items-center justify-center h-full text-muted-foreground">
         <div className="text-center">
-          <p className="text-lg font-medium mb-2">Story not found</p>
-          <p className="text-sm">The selected story could not be loaded</p>
+          <p className="text-lg font-medium mb-2">{t('storyContent.notFound.title')}</p>
+          <p className="text-sm">{t('storyContent.notFound.hint')}</p>
         </div>
       </div>
     );
@@ -291,7 +293,7 @@ export function StoryContent() {
                     </div>
                   </div>
                   <span className="text-xs text-muted-foreground whitespace-nowrap">
-                    Generating {pendingCount} {pendingCount === 1 ? 'audio' : 'audios'}
+                    {t('storyContent.generatingCount', { count: pendingCount })}
                   </span>
                 </Link>
               </motion.div>
@@ -301,13 +303,13 @@ export function StoryContent() {
             <PopoverTrigger asChild>
               <Button variant="outline" size="sm">
                 <Plus className="mr-2 h-4 w-4" />
-                Add
+                {t('storyContent.add')}
               </Button>
             </PopoverTrigger>
             <PopoverContent className="w-80 p-0" align="end">
               <div className="p-2 border-b">
                 <Input
-                  placeholder="Search by name or transcript..."
+                  placeholder={t('storyContent.searchPlaceholder')}
                   value={searchQuery}
                   onChange={(e) => setSearchQuery(e.target.value)}
                   autoFocus
@@ -316,7 +318,9 @@ export function StoryContent() {
               <div className="max-h-60 overflow-y-auto">
                 {availableGenerations.length === 0 ? (
                   <div className="p-4 text-center text-sm text-muted-foreground">
-                    {searchQuery ? 'No matching generations found' : 'No available generations'}
+                    {searchQuery
+                      ? t('storyContent.searchNoMatches')
+                      : t('storyContent.searchNoAvailable')}
                   </div>
                 ) : (
                   availableGenerations.map((gen) => (
@@ -344,7 +348,7 @@ export function StoryContent() {
               disabled={exportAudio.isPending}
             >
               <Download className="mr-2 h-4 w-4" />
-              Export Audio
+              {t('storyContent.exportAudio')}
             </Button>
           )}
         </div>
@@ -358,8 +362,8 @@ export function StoryContent() {
       >
         {sortedItems.length === 0 ? (
           <div className="text-center py-12 px-5 border-2 border-dashed border-muted rounded-md text-muted-foreground">
-            <p className="text-sm">No items in this story</p>
-            <p className="text-xs mt-2">Generate speech using the box below to add items</p>
+            <p className="text-sm">{t('storyContent.empty.title')}</p>
+            <p className="text-xs mt-2">{t('storyContent.empty.hint')}</p>
           </div>
         ) : (
           <DndContext

app/src/components/StoriesTab/StoryList.tsx

@@ -1,5 +1,6 @@
 import { BookOpen, MoreHorizontal, Pencil, Plus, Trash2 } from 'lucide-react';
 import { useEffect, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import {
   AlertDialog,
   AlertDialogAction,
@@ -41,6 +42,7 @@ import { formatDate } from '@/lib/utils/format';
 import { useStoryStore } from '@/stores/storyStore';
 
 export function StoryList() {
+  const { t } = useTranslation();
   const { data: stories, isLoading } = useStories();
   const selectedStoryId = useStoryStore((state) => state.selectedStoryId);
   const setSelectedStoryId = useStoryStore((state) => state.setSelectedStoryId);
@@ -72,8 +74,8 @@ export function StoryList() {
   const handleCreateStory = () => {
     if (!newStoryName.trim()) {
       toast({
-        title: 'Name required',
-        description: 'Please enter a story name',
+        title: t('stories.toast.nameRequired'),
+        description: t('stories.toast.nameRequiredDescription'),
         variant: 'destructive',
       });
       return;
@@ -91,13 +93,13 @@ export function StoryList() {
           setNewStoryName('');
           setNewStoryDescription('');
           toast({
-            title: 'Story created',
-            description: `"${story.name}" has been created`,
+            title: t('stories.toast.created'),
+            description: t('stories.toast.createdDescription', { name: story.name }),
           });
         },
         onError: (error) => {
           toast({
-            title: 'Failed to create story',
+            title: t('stories.toast.createFailed'),
             description: error.message,
             variant: 'destructive',
           });
@@ -116,8 +118,8 @@ export function StoryList() {
   const handleUpdateStory = () => {
     if (!editingStory || !newStoryName.trim()) {
       toast({
-        title: 'Name required',
-        description: 'Please enter a story name',
+        title: t('stories.toast.nameRequired'),
+        description: t('stories.toast.nameRequiredDescription'),
         variant: 'destructive',
       });
       return;
@@ -140,7 +142,7 @@ export function StoryList() {
         },
         onError: (error) => {
           toast({
-            title: 'Failed to update story',
+            title: t('stories.toast.updateFailed'),
             description: error.message,
             variant: 'destructive',
           });
@@ -168,7 +170,7 @@ export function StoryList() {
       },
       onError: (error) => {
         toast({
-          title: 'Failed to delete story',
+          title: t('stories.toast.deleteFailed'),
           description: error.message,
           variant: 'destructive',
         });
@@ -179,7 +181,7 @@ export function StoryList() {
   if (isLoading) {
     return (
       <div className="flex items-center justify-center h-full">
-        <div className="text-muted-foreground">Loading stories...</div>
+        <div className="text-muted-foreground">{t('stories.loading')}</div>
       </div>
     );
   }
@@ -195,10 +197,10 @@ export function StoryList() {
       {/* Fixed Header */}
       <div className="absolute top-0 left-0 right-0 z-20">
         <div className="flex items-center justify-between mb-4 px-1">
-          <h2 className="text-2xl font-bold">Stories</h2>
+          <h2 className="text-2xl font-bold">{t('stories.title')}</h2>
           <Button onClick={() => setCreateDialogOpen(true)} size="sm">
             <Plus className="mr-2 h-4 w-4" />
-            New Story
+            {t('stories.newStory')}
           </Button>
         </div>
       </div>
@@ -211,8 +213,8 @@ export function StoryList() {
         {storyList.length === 0 ? (
           <div className="text-center py-12 px-5 border-2 border-dashed border-muted rounded-2xl text-muted-foreground">
             <BookOpen className="h-12 w-12 mx-auto mb-4 opacity-50" />
-            <p className="text-sm">No stories yet</p>
-            <p className="text-xs mt-2">Create your first story to get started</p>
+            <p className="text-sm">{t('stories.empty.title')}</p>
+            <p className="text-xs mt-2">{t('stories.empty.hint')}</p>
           </div>
         ) : (
           <div className="space-y-0.5">
@@ -225,7 +227,11 @@ export function StoryList() {
                   'px-5 py-3 rounded-lg transition-colors group flex items-center cursor-pointer',
                   selectedStoryId === story.id ? 'bg-muted' : 'hover:bg-muted/50',
                 )}
-                aria-label={`Story ${story.name}, ${story.item_count} ${story.item_count === 1 ? 'item' : 'items'}, ${formatDate(story.updated_at)}`}
+                aria-label={t('stories.row.ariaLabel', {
+                  name: story.name,
+                  count: story.item_count,
+                  updated: formatDate(story.updated_at),
+                })}
                 aria-pressed={selectedStoryId === story.id}
                 onClick={() => setSelectedStoryId(story.id)}
                 onKeyDown={(e) => {
@@ -240,9 +246,7 @@ export function StoryList() {
                   <div className="flex-1 min-w-0 text-left overflow-hidden">
                     <h3 className="text-sm font-medium truncate">{story.name}</h3>
                     <div className="flex items-center gap-2 mt-1 text-xs text-muted-foreground">
-                      <span>
-                        {story.item_count} {story.item_count === 1 ? 'item' : 'items'}
-                      </span>
+                      <span>{t('stories.row.itemCount', { count: story.item_count })}</span>
                       <span>·</span>
                       <span>{formatDate(story.updated_at)}</span>
                     </div>
@@ -254,7 +258,7 @@ export function StoryList() {
                         size="icon"
                         className="h-7 w-7 opacity-0 group-hover:opacity-100 transition-opacity"
                         onClick={(e) => e.stopPropagation()}
-                        aria-label={`Actions for ${story.name}`}
+                        aria-label={t('stories.row.actionsLabel', { name: story.name })}
                       >
                         <MoreHorizontal className="h-3.5 w-3.5" />
                       </Button>
@@ -262,14 +266,14 @@ export function StoryList() {
                     <DropdownMenuContent align="end">
                       <DropdownMenuItem onClick={() => handleEditClick(story)}>
                         <Pencil className="mr-2 h-4 w-4" />
-                        Edit
+                        {t('common.edit')}
                       </DropdownMenuItem>
                       <DropdownMenuItem
                         onClick={() => handleDeleteClick(story.id)}
                         className="text-destructive focus:text-destructive"
                       >
                         <Trash2 className="mr-2 h-4 w-4" />
-                        Delete
+                        {t('common.delete')}
                       </DropdownMenuItem>
                     </DropdownMenuContent>
                   </DropdownMenu>
@@ -284,17 +288,15 @@ export function StoryList() {
       <Dialog open={createDialogOpen} onOpenChange={setCreateDialogOpen}>
         <DialogContent>
           <DialogHeader>
-            <DialogTitle>Create New Story</DialogTitle>
-            <DialogDescription>
-              Create a new story to organize your voice generations into conversations.
-            </DialogDescription>
+            <DialogTitle>{t('stories.createDialog.title')}</DialogTitle>
+            <DialogDescription>{t('stories.createDialog.description')}</DialogDescription>
           </DialogHeader>
           <div className="space-y-4 py-4">
             <div className="space-y-2">
-              <Label htmlFor="story-name">Name</Label>
+              <Label htmlFor="story-name">{t('stories.fields.name')}</Label>
               <Input
                 id="story-name"
-                placeholder="My Story"
+                placeholder={t('stories.fields.namePlaceholder')}
                 value={newStoryName}
                 onChange={(e) => setNewStoryName(e.target.value)}
                 onKeyDown={(e) => {
@@ -305,10 +307,10 @@ export function StoryList() {
               />
             </div>
             <div className="space-y-2">
-              <Label htmlFor="story-description">Description (optional)</Label>
+              <Label htmlFor="story-description">{t('stories.fields.descriptionLabel')}</Label>
               <Textarea
                 id="story-description"
-                placeholder="A conversation between..."
+                placeholder={t('stories.fields.descriptionPlaceholder')}
                 value={newStoryDescription}
                 onChange={(e) => setNewStoryDescription(e.target.value)}
                 rows={3}
@@ -317,28 +319,29 @@ export function StoryList() {
           </div>
           <DialogFooter>
             <Button variant="outline" onClick={() => setCreateDialogOpen(false)}>
-              Cancel
+              {t('common.cancel')}
             </Button>
             <Button onClick={handleCreateStory} disabled={createStory.isPending}>
-              {createStory.isPending ? 'Creating...' : 'Create'}
+              {createStory.isPending
+                ? t('stories.createDialog.creating')
+                : t('stories.createDialog.action')}
             </Button>
           </DialogFooter>
         </DialogContent>
       </Dialog>
 
-      {/* Edit Story Dialog */}
       <Dialog open={editDialogOpen} onOpenChange={setEditDialogOpen}>
         <DialogContent>
           <DialogHeader>
-            <DialogTitle>Edit Story</DialogTitle>
-            <DialogDescription>Update the story name and description.</DialogDescription>
+            <DialogTitle>{t('stories.editDialog.title')}</DialogTitle>
+            <DialogDescription>{t('stories.editDialog.description')}</DialogDescription>
           </DialogHeader>
           <div className="space-y-4 py-4">
             <div className="space-y-2">
-              <Label htmlFor="edit-story-name">Name</Label>
+              <Label htmlFor="edit-story-name">{t('stories.fields.name')}</Label>
               <Input
                 id="edit-story-name"
-                placeholder="My Story"
+                placeholder={t('stories.fields.namePlaceholder')}
                 value={newStoryName}
                 onChange={(e) => setNewStoryName(e.target.value)}
                 onKeyDown={(e) => {
@@ -349,10 +352,10 @@ export function StoryList() {
               />
             </div>
             <div className="space-y-2">
-              <Label htmlFor="edit-story-description">Description (optional)</Label>
+              <Label htmlFor="edit-story-description">{t('stories.fields.descriptionLabel')}</Label>
               <Textarea
                 id="edit-story-description"
-                placeholder="A conversation between..."
+                placeholder={t('stories.fields.descriptionPlaceholder')}
                 value={newStoryDescription}
                 onChange={(e) => setNewStoryDescription(e.target.value)}
                 rows={3}
@@ -361,34 +364,30 @@ export function StoryList() {
           </div>
           <DialogFooter>
             <Button variant="outline" onClick={() => setEditDialogOpen(false)}>
-              Cancel
+              {t('common.cancel')}
             </Button>
             <Button onClick={handleUpdateStory} disabled={updateStory.isPending}>
-              {updateStory.isPending ? 'Saving...' : 'Save'}
+              {updateStory.isPending ? t('stories.editDialog.saving') : t('common.save')}
             </Button>
           </DialogFooter>
         </DialogContent>
       </Dialog>
 
-      {/* Delete Story Confirmation Dialog */}
       <AlertDialog open={deleteDialogOpen} onOpenChange={setDeleteDialogOpen}>
         <AlertDialogContent>
           <AlertDialogHeader>
-            <AlertDialogTitle>Are you sure?</AlertDialogTitle>
-            <AlertDialogDescription>
-              This will permanently delete the story and all its items. This action cannot be
-              undone.
-            </AlertDialogDescription>
+            <AlertDialogTitle>{t('stories.deleteDialog.title')}</AlertDialogTitle>
+            <AlertDialogDescription>{t('stories.deleteDialog.description')}</AlertDialogDescription>
           </AlertDialogHeader>
           <AlertDialogFooter>
-            <AlertDialogCancel>Cancel</AlertDialogCancel>
+            <AlertDialogCancel>{t('common.cancel')}</AlertDialogCancel>
             <AlertDialogAction asChild>
               <Button
                 onClick={handleDeleteConfirm}
                 disabled={deleteStory.isPending}
                 className="bg-destructive text-destructive-foreground hover:bg-destructive/90"
               >
-                {deleteStory.isPending ? 'Deleting...' : 'Delete'}
+                {deleteStory.isPending ? t('stories.deleteDialog.deleting') : t('common.delete')}
               </Button>
             </AlertDialogAction>
           </AlertDialogFooter>

app/src/components/StoriesTab/StoryTrackEditor.tsx

@@ -371,7 +371,7 @@ export function StoryTrackEditor({ storyId, items }: StoryTrackEditorProps) {
     }
   }, [isResizing, handleResizeMove, handleResizeEnd]);
 
-  const handleTimelineClick = (e: React.MouseEvent<HTMLDivElement>) => {
+  const handleTimelineClick = (e: React.MouseEvent<HTMLElement>) => {
     if (!tracksRef.current || draggingItem || trimmingItem) return;
     const rect = tracksRef.current.getBoundingClientRect();
     const x = e.clientX - rect.left + tracksRef.current.scrollLeft;
@@ -500,7 +500,7 @@ export function StoryTrackEditor({ storyId, items }: StoryTrackEditorProps) {
   }, [trimmingItem, trimSide, tempTrimValues, storyId, trimItem, toast]);
 
   const handleSplit = useCallback(() => {
-    if (!selectedClipId) return;
+    if (!selectedClipId || splitItem.isPending) return;
 
     const item = items.find((i) => i.id === selectedClipId);
     if (!item) return;

app/src/components/VoiceProfiles/AudioSampleRecording.tsx

@@ -1,5 +1,6 @@
 import { Mic, Pause, Play, Square } from 'lucide-react';
 import { memo, useEffect, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Visualizer } from 'react-sound-visualizer';
 import { Button } from '@/components/ui/button';
 import { FormControl, FormItem, FormMessage } from '@/components/ui/form';
@@ -14,12 +15,7 @@ const MemoizedWaveform = memo(function MemoizedWaveform({
     <div className="absolute inset-0 pointer-events-none flex items-center justify-center opacity-30">
       <Visualizer audio={audioStream} autoStart strokeColor="#b39a3d">
         {({ canvasRef }) => (
-          <canvas
-            ref={canvasRef}
-            width={500}
-            height={150}
-            className="w-full h-full"
-          />
+          <canvas ref={canvasRef} width={500} height={150} className="w-full h-full" />
         )}
       </Visualizer>
     </div>
@@ -53,6 +49,7 @@ export function AudioSampleRecording({
   isTranscribing = false,
   showWaveform = true,
 }: AudioSampleRecordingProps) {
+  const { t } = useTranslation();
   const [audioStream, setAudioStream] = useState<MediaStream | null>(null);
 
   // Request microphone access when component mounts
@@ -87,9 +84,7 @@ export function AudioSampleRecording({
         <div className="space-y-4">
           {!isRecording && !file && (
             <div className="relative flex flex-col items-center justify-center gap-4 p-4 border-2 border-dashed rounded-lg min-h-[180px] overflow-hidden">
-              {showWaveform && audioStream && (
-                <MemoizedWaveform audioStream={audioStream} />
-              )}
+              {showWaveform && audioStream && <MemoizedWaveform audioStream={audioStream} />}
               <Button
                 type="button"
                 onClick={onStart}
@@ -97,19 +92,17 @@ export function AudioSampleRecording({
                 className="relative z-10 flex items-center gap-2"
               >
                 <Mic className="h-5 w-5" />
-                Start Recording
+                {t('audioSample.startRecording')}
               </Button>
               <p className="relative z-10 text-sm text-muted-foreground text-center">
-                Click to start recording. Maximum duration: 30 seconds.
+                {t('audioSample.recordHint')}
               </p>
             </div>
           )}
 
           {isRecording && (
             <div className="relative flex flex-col items-center justify-center gap-4 p-4 border-2 border-accent rounded-lg bg-accent/5 min-h-[180px] overflow-hidden">
-              {showWaveform && audioStream && (
-                <MemoizedWaveform audioStream={audioStream} />
-              )}
+              {showWaveform && audioStream && <MemoizedWaveform audioStream={audioStream} />}
               <div className="relative z-10 flex items-center gap-4">
                 <div className="flex items-center gap-2">
                   <div className="h-3 w-3 rounded-full bg-accent animate-pulse" />
@@ -124,10 +117,10 @@ export function AudioSampleRecording({
                 className="relative z-10 flex items-center gap-2 bg-accent text-accent-foreground hover:bg-accent/90"
               >
                 <Square className="h-4 w-4" />
-                Stop Recording
+                {t('audioSample.stopRecording')}
               </Button>
               <p className="relative z-10 text-sm text-muted-foreground text-center">
-                {formatAudioDuration(30 - duration)} remaining
+                {t('audioSample.remaining', { time: formatAudioDuration(30 - duration) })}
               </p>
             </div>
           )}
@@ -136,16 +129,18 @@ export function AudioSampleRecording({
             <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-primary rounded-lg bg-primary/5 min-h-[180px]">
               <div className="flex items-center gap-2">
                 <Mic className="h-5 w-5 text-primary" />
-                <span className="font-medium">Recording complete</span>
+                <span className="font-medium">{t('audioSample.recordingComplete')}</span>
               </div>
-              <p className="text-sm text-muted-foreground text-center">File: {file.name}</p>
+              <p className="text-sm text-muted-foreground text-center">
+                {t('audioSample.fileLabel', { name: file.name })}
+              </p>
               <div className="flex gap-2">
                 <Button
                   type="button"
                   size="icon"
                   variant="outline"
                   onClick={onPlayPause}
-                  aria-label={isPlaying ? 'Pause' : 'Play'}
+                  aria-label={isPlaying ? t('audioSample.pause') : t('audioSample.play')}
                 >
                   {isPlaying ? <Pause className="h-4 w-4" /> : <Play className="h-4 w-4" />}
                 </Button>
@@ -157,7 +152,7 @@ export function AudioSampleRecording({
                   className="flex items-center gap-2"
                 >
                   <Mic className="h-4 w-4" />
-                  {isTranscribing ? 'Transcribing...' : 'Transcribe'}
+                  {isTranscribing ? t('audioSample.transcribing') : t('audioSample.transcribe')}
                 </Button>
                 <Button
                   type="button"
@@ -165,7 +160,7 @@ export function AudioSampleRecording({
                   onClick={onCancel}
                   className="flex items-center gap-2"
                 >
-                  Record Again
+                  {t('audioSample.recordAgain')}
                 </Button>
               </div>
             </div>

app/src/components/VoiceProfiles/AudioSampleSystem.tsx

@@ -1,4 +1,5 @@
 import { Mic, Monitor, Pause, Play, Square } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { FormControl, FormItem, FormMessage } from '@/components/ui/form';
 import { formatAudioDuration } from '@/lib/utils/audio';
@@ -28,6 +29,7 @@ export function AudioSampleSystem({
   isPlaying,
   isTranscribing = false,
 }: AudioSampleSystemProps) {
+  const { t } = useTranslation();
   return (
     <FormItem>
       <FormControl>
@@ -36,10 +38,10 @@ export function AudioSampleSystem({
             <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-dashed rounded-lg min-h-[180px]">
               <Button type="button" onClick={onStart} size="lg" className="flex items-center gap-2">
                 <Monitor className="h-5 w-5" />
-                Start Capture
+                {t('audioSample.startCapture')}
               </Button>
               <p className="text-sm text-muted-foreground text-center">
-                Capture audio from your system. Maximum duration: 30 seconds.
+                {t('audioSample.systemHint')}
               </p>
             </div>
           )}
@@ -61,10 +63,10 @@ export function AudioSampleSystem({
                 className="flex items-center gap-2"
               >
                 <Square className="h-4 w-4" />
-                Stop Capture
+                {t('audioSample.stopCapture')}
               </Button>
               <p className="text-sm text-muted-foreground text-center">
-                {formatAudioDuration(30 - duration)} remaining
+                {t('audioSample.remaining', { time: formatAudioDuration(30 - duration) })}
               </p>
             </div>
           )}
@@ -73,16 +75,18 @@ export function AudioSampleSystem({
             <div className="flex flex-col items-center justify-center gap-4 p-4 border-2 border-primary rounded-lg bg-primary/5 min-h-[180px]">
               <div className="flex items-center gap-2">
                 <Monitor className="h-5 w-5 text-primary" />
-                <span className="font-medium">Capture complete</span>
+                <span className="font-medium">{t('audioSample.captureComplete')}</span>
               </div>
-              <p className="text-sm text-muted-foreground text-center">File: {file.name}</p>
+              <p className="text-sm text-muted-foreground text-center">
+                {t('audioSample.fileLabel', { name: file.name })}
+              </p>
               <div className="flex gap-2">
                 <Button
                   type="button"
                   size="icon"
                   variant="outline"
                   onClick={onPlayPause}
-                  aria-label={isPlaying ? 'Pause' : 'Play'}
+                  aria-label={isPlaying ? t('audioSample.pause') : t('audioSample.play')}
                 >
                   {isPlaying ? <Pause className="h-4 w-4" /> : <Play className="h-4 w-4" />}
                 </Button>
@@ -94,7 +98,7 @@ export function AudioSampleSystem({
                   className="flex items-center gap-2"
                 >
                   <Mic className="h-4 w-4" />
-                  {isTranscribing ? 'Transcribing...' : 'Transcribe'}
+                  {isTranscribing ? t('audioSample.transcribing') : t('audioSample.transcribe')}
                 </Button>
                 <Button
                   type="button"
@@ -102,7 +106,7 @@ export function AudioSampleSystem({
                   onClick={onCancel}
                   className="flex items-center gap-2"
                 >
-                  Capture Again
+                  {t('audioSample.captureAgain')}
                 </Button>
               </div>
             </div>

app/src/components/VoiceProfiles/AudioSampleUpload.tsx

@@ -1,5 +1,6 @@
 import { Mic, Pause, Play, Upload } from 'lucide-react';
 import { useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { FormControl, FormItem, FormMessage } from '@/components/ui/form';
 
@@ -26,6 +27,7 @@ export function AudioSampleUpload({
   isDisabled = false,
   fieldName,
 }: AudioSampleUploadProps) {
+  const { t } = useTranslation();
   const [isDragging, setIsDragging] = useState(false);
   const fileInputRef = useRef<HTMLInputElement>(null);
 
@@ -90,19 +92,21 @@ export function AudioSampleUpload({
                   className="flex items-center gap-2"
                 >
                   <Upload className="h-5 w-5" />
-                  Choose File
+                  {t('audioSample.chooseFile')}
                 </Button>
                 <p className="text-sm text-muted-foreground text-center">
-                  Click to choose a file or drag and drop. Maximum duration: 30 seconds.
+                  {t('audioSample.uploadHint')}
                 </p>
               </>
             ) : (
               <>
                 <div className="flex items-center gap-2">
                   <Upload className="h-5 w-5 text-primary" />
-                  <span className="font-medium">File uploaded</span>
+                  <span className="font-medium">{t('audioSample.fileUploaded')}</span>
                 </div>
-                <p className="text-sm text-muted-foreground text-center">File: {file.name}</p>
+                <p className="text-sm text-muted-foreground text-center">
+                  {t('audioSample.fileLabel', { name: file.name })}
+                </p>
                 <div className="flex gap-2">
                   <Button
                     type="button"
@@ -110,7 +114,7 @@ export function AudioSampleUpload({
                     variant="outline"
                     onClick={onPlayPause}
                     disabled={isValidating}
-                    aria-label={isPlaying ? 'Pause' : 'Play'}
+                    aria-label={isPlaying ? t('audioSample.pause') : t('audioSample.play')}
                   >
                     {isPlaying ? <Pause className="h-4 w-4" /> : <Play className="h-4 w-4" />}
                   </Button>
@@ -122,7 +126,7 @@ export function AudioSampleUpload({
                     className="flex items-center gap-2"
                   >
                     <Mic className="h-4 w-4" />
-                    {isTranscribing ? 'Transcribing...' : 'Transcribe'}
+                    {isTranscribing ? t('audioSample.transcribing') : t('audioSample.transcribe')}
                   </Button>
                   <Button
                     type="button"
@@ -134,7 +138,7 @@ export function AudioSampleUpload({
                       }
                     }}
                   >
-                    Remove
+                    {t('audioSample.remove')}
                   </Button>
                 </div>
               </>

app/src/components/VoiceProfiles/ProfileCard.tsx

@@ -1,5 +1,6 @@
 import { Download, Edit, Sparkles, Trash2 } from 'lucide-react';
 import { useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
@@ -17,11 +18,19 @@ import { useDeleteProfile, useExportProfile } from '@/lib/hooks/useProfiles';
 import { cn } from '@/lib/utils/cn';
 import { useUIStore } from '@/stores/uiStore';
 
+/** Human-readable display names for preset engine badges. */
+const ENGINE_DISPLAY_NAMES: Record<string, string> = {
+  kokoro: 'Kokoro',
+  qwen_custom_voice: 'CustomVoice',
+};
+
 interface ProfileCardProps {
   profile: VoiceProfileResponse;
+  disabled?: boolean;
 }
 
-export function ProfileCard({ profile }: ProfileCardProps) {
+export function ProfileCard({ profile, disabled }: ProfileCardProps) {
+  const { t } = useTranslation();
   const [deleteDialogOpen, setDeleteDialogOpen] = useState(false);
 
   const deleteProfile = useDeleteProfile();
@@ -34,6 +43,11 @@ export function ProfileCard({ profile }: ProfileCardProps) {
   const isSelected = selectedProfileId === profile.id;
 
   const handleSelect = () => {
+    if (disabled && isSelected) {
+      setSelectedProfileId(null);
+      setTimeout(() => setSelectedProfileId(profile.id), 0);
+      return;
+    }
     setSelectedProfileId(isSelected ? null : profile.id);
   };
 
@@ -66,16 +80,18 @@ export function ProfileCard({ profile }: ProfileCardProps) {
     }
   };
 
-  const selectLabel = isSelected
-    ? `${profile.name}, ${profile.language}. Selected as voice for generation.`
-    : `${profile.name}, ${profile.language}. Select as voice for generation.`;
+  const selectLabel = t(
+    isSelected ? 'profiles.card.selectLabelSelected' : 'profiles.card.selectLabel',
+    { name: profile.name, language: profile.language },
+  );
 
   return (
     <>
       <Card
         className={cn(
-          'cursor-pointer hover:shadow-md transition-all flex flex-col h-[162px]',
-          isSelected && 'ring-2 ring-accent shadow-md',
+          'cursor-pointer transition-all flex flex-col h-[162px]',
+          disabled ? 'opacity-40 hover:opacity-60' : 'hover:shadow-md',
+          isSelected && !disabled && 'ring-2 ring-accent shadow-md',
         )}
         onClick={handleSelect}
         tabIndex={0}
@@ -91,12 +107,22 @@ export function ProfileCard({ profile }: ProfileCardProps) {
         </CardHeader>
         <CardContent className="p-3 pt-0 flex flex-col flex-1">
           <p className="text-xs text-muted-foreground mb-1.5 line-clamp-2 leading-relaxed">
-            {profile.description || 'No description'}
+            {profile.description || t('profiles.card.noDescription')}
           </p>
           <div className="mb-2 flex items-center gap-1.5">
             <Badge variant="outline" className="text-xs h-5 px-1.5 text-muted-foreground">
               {profile.language}
             </Badge>
+            {profile.voice_type === 'preset' && (
+              <Badge variant="secondary" className="text-xs h-5 px-1.5">
+                {ENGINE_DISPLAY_NAMES[profile.preset_engine ?? ''] ?? profile.preset_engine}
+              </Badge>
+            )}
+            {profile.voice_type === 'designed' && (
+              <Badge variant="secondary" className="text-xs h-5 px-1.5">
+                {t('profiles.card.designed')}
+              </Badge>
+            )}
             {profile.effects_chain && profile.effects_chain.length > 0 && (
               <Sparkles className="h-3.5 w-3.5 text-accent fill-accent" />
             )}
@@ -106,7 +132,7 @@ export function ProfileCard({ profile }: ProfileCardProps) {
               icon={Download}
               onClick={handleExport}
               disabled={exportProfile.isPending}
-              aria-label="Export profile"
+              aria-label={t('profiles.card.export')}
             />
             <CircleButton
               icon={Edit}
@@ -114,13 +140,13 @@ export function ProfileCard({ profile }: ProfileCardProps) {
                 e.stopPropagation();
                 handleEdit();
               }}
-              aria-label="Edit profile"
+              aria-label={t('profiles.card.edit')}
             />
             <CircleButton
               icon={Trash2}
               onClick={handleDeleteClick}
               disabled={deleteProfile.isPending}
-              aria-label="Delete profile"
+              aria-label={t('profiles.card.delete')}
             />
           </div>
         </CardContent>
@@ -129,21 +155,21 @@ export function ProfileCard({ profile }: ProfileCardProps) {
       <Dialog open={deleteDialogOpen} onOpenChange={setDeleteDialogOpen}>
         <DialogContent>
           <DialogHeader>
-            <DialogTitle>Delete Profile</DialogTitle>
+            <DialogTitle>{t('profiles.deleteDialog.title')}</DialogTitle>
             <DialogDescription>
-              Are you sure you want to delete "{profile.name}"? This action cannot be undone.
+              {t('profiles.deleteDialog.body', { name: profile.name })}
             </DialogDescription>
           </DialogHeader>
           <DialogFooter>
             <Button variant="outline" onClick={() => setDeleteDialogOpen(false)}>
-              Cancel
+              {t('common.cancel')}
             </Button>
             <Button
               variant="destructive"
               onClick={handleDeleteConfirm}
               disabled={deleteProfile.isPending}
             >
-              {deleteProfile.isPending ? 'Deleting...' : 'Delete'}
+              {deleteProfile.isPending ? t('profiles.deleteDialog.deleting') : t('common.delete')}
             </Button>
           </DialogFooter>
         </DialogContent>

app/src/components/VoiceProfiles/ProfileList.tsx

@@ -1,4 +1,6 @@
-import { Mic, Sparkles } from 'lucide-react';
+import { Info, Mic, Sparkles } from 'lucide-react';
+import { useEffect, useRef } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent } from '@/components/ui/card';
 import { useProfiles } from '@/lib/hooks/useProfiles';
@@ -6,9 +8,37 @@ import { useUIStore } from '@/stores/uiStore';
 import { ProfileCard } from './ProfileCard';
 import { ProfileForm } from './ProfileForm';
 
+/** Engines that use preset (built-in) voices instead of cloned profiles. */
+const PRESET_ENGINES = new Set(['kokoro', 'qwen_custom_voice']);
+
 export function ProfileList() {
+  const { t } = useTranslation();
   const { data: profiles, isLoading, error } = useProfiles();
   const setDialogOpen = useUIStore((state) => state.setProfileDialogOpen);
+  const selectedEngine = useUIStore((state) => state.selectedEngine);
+  const selectedProfileId = useUIStore((state) => state.selectedProfileId);
+  const cardRefs = useRef<Map<string, HTMLDivElement>>(new Map());
+
+  // Scroll to the selected profile after engine/sort changes
+  useEffect(() => {
+    if (!selectedProfileId) return;
+    let timeoutId: ReturnType<typeof setTimeout> | null = null;
+    const rafId = requestAnimationFrame(() => {
+      const el = cardRefs.current.get(selectedProfileId);
+      if (!el) return;
+
+      // Temporarily apply scroll-margin so it doesn't land flush at the top
+      el.style.scrollMarginTop = '180px';
+      el.scrollIntoView({ behavior: 'smooth', block: 'nearest', inline: 'nearest' });
+      timeoutId = setTimeout(() => {
+        el.style.scrollMarginTop = '';
+      }, 500);
+    });
+    return () => {
+      cancelAnimationFrame(rafId);
+      if (timeoutId) clearTimeout(timeoutId);
+    };
+  }, [selectedProfileId, selectedEngine]);
 
   if (isLoading) {
     return null;
@@ -17,12 +47,28 @@ export function ProfileList() {
   if (error) {
     return (
       <div className="flex items-center justify-center p-8">
-        <div className="text-destructive">Error loading profiles: {error.message}</div>
+        <div className="text-destructive">
+          {t('profiles.list.errorLoading', { message: error.message })}
+        </div>
       </div>
     );
   }
 
   const allProfiles = profiles || [];
+  const isPresetEngine = PRESET_ENGINES.has(selectedEngine);
+
+  /** Whether a profile is supported by the currently selected engine. */
+  const isSupported = (p: (typeof allProfiles)[number]) =>
+    isPresetEngine
+      ? p.voice_type === 'preset' && p.preset_engine === selectedEngine
+      : p.voice_type !== 'preset';
+
+  // Sort so supported profiles come first
+  const sortedProfiles = [...allProfiles].sort(
+    (a, b) => (isSupported(a) ? 0 : 1) - (isSupported(b) ? 0 : 1),
+  );
+
+  const hasUnsupported = sortedProfiles.some((p) => !isSupported(p));
 
   return (
     <div className="flex flex-col">
@@ -31,22 +77,33 @@ export function ProfileList() {
           <Card>
             <CardContent className="flex flex-col items-center justify-center py-12">
               <Mic className="h-12 w-12 text-muted-foreground mb-4" />
-              <p className="text-muted-foreground mb-4">
-                No voice profiles yet. Create your first profile to get started.
-              </p>
+              <p className="text-muted-foreground mb-4">{t('profiles.list.empty')}</p>
               <Button onClick={() => setDialogOpen(true)}>
                 <Sparkles className="mr-2 h-4 w-4" />
-                Create Voice
+                {t('profiles.list.createVoice')}
               </Button>
             </CardContent>
           </Card>
         ) : (
           <div className="flex gap-4 overflow-x-auto p-1 pb-1 lg:grid lg:grid-cols-3 lg:auto-rows-auto lg:overflow-x-visible lg:pb-[150px]">
-            {allProfiles.map((profile) => (
-              <div key={profile.id} className="shrink-0 w-[200px] lg:w-auto lg:shrink">
-                <ProfileCard profile={profile} />
+            {sortedProfiles.map((profile) => (
+              <div
+                key={profile.id}
+                className="shrink-0 w-[200px] lg:w-auto lg:shrink"
+                ref={(el) => {
+                  if (el) cardRefs.current.set(profile.id, el);
+                  else cardRefs.current.delete(profile.id);
+                }}
+              >
+                <ProfileCard profile={profile} disabled={!isSupported(profile)} />
               </div>
             ))}
+            {hasUnsupported && (
+              <div className="col-span-full flex items-center gap-2 text-xs text-muted-foreground py-2">
+                <Info className="h-3.5 w-3.5 shrink-0" />
+                <span>{t('profiles.list.unsupportedNote')}</span>
+              </div>
+            )}
           </div>
         )}
       </div>

app/src/components/VoiceProfiles/SampleList.tsx

@@ -1,5 +1,6 @@
 import { Check, Edit, Pause, Play, Plus, Trash2, Volume2, X } from 'lucide-react';
 import { useEffect, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { CircleButton } from '@/components/ui/circle-button';
 import {
@@ -24,6 +25,7 @@ interface MiniSamplePlayerProps {
 }
 
 function MiniSamplePlayer({ audioUrl }: MiniSamplePlayerProps) {
+  const { t } = useTranslation();
   const audioRef = useRef<HTMLAudioElement | null>(null);
   const [isPlaying, setIsPlaying] = useState(false);
   const [currentTime, setCurrentTime] = useState(0);
@@ -102,7 +104,7 @@ function MiniSamplePlayer({ audioUrl }: MiniSamplePlayerProps) {
           className="h-7 w-7 shrink-0"
           onClick={handlePlayPause}
           disabled={isLoading}
-          aria-label={isPlaying ? 'Pause sample' : 'Play sample'}
+          aria-label={isPlaying ? t('sampleList.player.pause') : t('sampleList.player.play')}
         >
           {isPlaying ? <Pause className="h-3.5 w-3.5" /> : <Play className="h-3.5 w-3.5 ml-0.5" />}
         </Button>
@@ -114,8 +116,11 @@ function MiniSamplePlayer({ audioUrl }: MiniSamplePlayerProps) {
             max={100}
             step={0.1}
             className="flex-1"
-            aria-label="Sample playback position"
-            aria-valuetext={`${formatAudioDuration(currentTime)} of ${formatAudioDuration(duration)}`}
+            aria-label={t('sampleList.player.position')}
+            aria-valuetext={t('sampleList.player.positionValue', {
+              current: formatAudioDuration(currentTime),
+              total: formatAudioDuration(duration),
+            })}
           />
           <div className="flex items-center gap-1 text-xs text-muted-foreground shrink-0 min-w-[70px]">
             <span className="font-mono">{formatAudioDuration(currentTime)}</span>
@@ -130,8 +135,8 @@ function MiniSamplePlayer({ audioUrl }: MiniSamplePlayerProps) {
           size="icon"
           className="h-7 w-7 shrink-0"
           onClick={handleStop}
-          title="Stop"
-          aria-label="Stop playback"
+          title={t('sampleList.player.stop')}
+          aria-label={t('sampleList.player.stopAria')}
         >
           <X className="h-3.5 w-3.5" />
         </Button>
@@ -145,6 +150,7 @@ interface SampleListProps {
 }
 
 export function SampleList({ profileId }: SampleListProps) {
+  const { t } = useTranslation();
   const { data: samples, isLoading } = useProfileSamples(profileId);
   const deleteSample = useDeleteSample();
   const updateSample = useUpdateSample();
@@ -181,8 +187,8 @@ export function SampleList({ profileId }: SampleListProps) {
   const handleSaveEdit = async (sampleId: string) => {
     if (!editedText.trim()) {
       toast({
-        title: 'Invalid text',
-        description: 'Reference text cannot be empty.',
+        title: t('sampleList.toast.invalidText'),
+        description: t('sampleList.toast.invalidTextDescription'),
         variant: 'destructive',
       });
       return;
@@ -191,22 +197,23 @@ export function SampleList({ profileId }: SampleListProps) {
     try {
       await updateSample.mutateAsync({ sampleId, referenceText: editedText.trim() });
       toast({
-        title: 'Sample updated',
-        description: 'Reference text has been updated successfully.',
+        title: t('sampleList.toast.updated'),
+        description: t('sampleList.toast.updatedDescription'),
       });
       setEditingSampleId(null);
       setEditedText('');
     } catch (error) {
       toast({
-        title: 'Update failed',
-        description: error instanceof Error ? error.message : 'Failed to update sample',
+        title: t('sampleList.toast.updateFailed'),
+        description:
+          error instanceof Error ? error.message : t('sampleList.toast.updateFailedFallback'),
         variant: 'destructive',
       });
     }
   };
 
   if (isLoading) {
-    return <div className="text-sm text-muted-foreground">Loading samples...</div>;
+    return <div className="text-sm text-muted-foreground">{t('sampleList.loading')}</div>;
   }
 
   return (
@@ -214,10 +221,8 @@ export function SampleList({ profileId }: SampleListProps) {
       {samples && samples.length === 0 ? (
         <div className="flex flex-col items-center justify-center py-8 text-center border border-dashed rounded-lg">
           <Volume2 className="h-8 w-8 text-muted-foreground/50 mb-2" />
-          <p className="text-sm text-muted-foreground">No samples yet</p>
-          <p className="text-xs text-muted-foreground/70 mt-1">
-            Add your first audio sample to get started
-          </p>
+          <p className="text-sm text-muted-foreground">{t('sampleList.empty.title')}</p>
+          <p className="text-xs text-muted-foreground/70 mt-1">{t('sampleList.empty.hint')}</p>
         </div>
       ) : (
         <div className="space-y-2">
@@ -237,13 +242,13 @@ export function SampleList({ profileId }: SampleListProps) {
                   <div className="p-4 space-y-3">
                     <div className="flex items-center gap-2 text-xs text-muted-foreground mb-2">
                       <Edit className="h-3 w-3" />
-                      <span>Editing transcription</span>
+                      <span>{t('sampleList.editing')}</span>
                     </div>
                     <Textarea
                       value={editedText}
                       onChange={(e) => setEditedText(e.target.value)}
                       className="min-h-[100px] text-sm resize-none"
-                      placeholder="Enter reference text..."
+                      placeholder={t('sampleList.placeholder')}
                       autoFocus
                     />
                     <div className="flex items-center justify-end gap-2 pt-1">
@@ -255,7 +260,7 @@ export function SampleList({ profileId }: SampleListProps) {
                         disabled={updateSample.isPending}
                       >
                         <X className="h-4 w-4 mr-1" />
-                        Cancel
+                        {t('common.cancel')}
                       </Button>
                       <Button
                         type="button"
@@ -264,7 +269,7 @@ export function SampleList({ profileId }: SampleListProps) {
                         disabled={updateSample.isPending}
                       >
                         <Check className="h-4 w-4 mr-1" />
-                        {updateSample.isPending ? 'Saving...' : 'Save'}
+                        {updateSample.isPending ? t('sampleList.saving') : t('common.save')}
                       </Button>
                     </div>
                   </div>
@@ -283,12 +288,12 @@ export function SampleList({ profileId }: SampleListProps) {
                       <div className="shrink-0 flex items-center gap-0.5 opacity-0 group-hover:opacity-100 transition-opacity">
                         <CircleButton
                           icon={Edit}
-                          title="Edit transcription"
+                          title={t('sampleList.editTranscription')}
                           onClick={() => handleStartEdit(sample.id, sample.reference_text)}
                         />
                         <CircleButton
                           icon={Trash2}
-                          title="Delete sample"
+                          title={t('sampleList.deleteSample')}
                           onClick={() => handleDeleteClick(sample.id)}
                           disabled={deleteSample.isPending}
                         />
@@ -317,24 +322,18 @@ export function SampleList({ profileId }: SampleListProps) {
         onClick={() => setUploadOpen(true)}
       >
         <Plus className="mr-2 h-4 w-4" />
-        Add Sample
+        {t('sampleList.addSample')}
       </Button>
 
-      <p className="text-xs text-muted-foreground text-center px-2">
-        Note: A single 30-second sample is the sweet spot. Quality may decrease with multiple
-        samples. In a future update samples might be interchangeable and tagged for varying styles
-        of the same voice.
-      </p>
+      <p className="text-xs text-muted-foreground text-center px-2">{t('sampleList.note')}</p>
 
       <SampleUpload profileId={profileId} open={uploadOpen} onOpenChange={setUploadOpen} />
 
       <Dialog open={deleteDialogOpen} onOpenChange={setDeleteDialogOpen}>
         <DialogContent>
           <DialogHeader>
-            <DialogTitle>Delete Sample</DialogTitle>
-            <DialogDescription>
-              Are you sure you want to delete this audio sample? This action cannot be undone.
-            </DialogDescription>
+            <DialogTitle>{t('sampleList.deleteDialog.title')}</DialogTitle>
+            <DialogDescription>{t('sampleList.deleteDialog.description')}</DialogDescription>
           </DialogHeader>
           <DialogFooter>
             <Button
@@ -344,14 +343,14 @@ export function SampleList({ profileId }: SampleListProps) {
                 setSampleToDelete(null);
               }}
             >
-              Cancel
+              {t('common.cancel')}
             </Button>
             <Button
               variant="destructive"
               onClick={handleDeleteConfirm}
               disabled={deleteSample.isPending}
             >
-              {deleteSample.isPending ? 'Deleting...' : 'Delete'}
+              {deleteSample.isPending ? t('sampleList.deleteDialog.deleting') : t('common.delete')}
             </Button>
           </DialogFooter>
         </DialogContent>

app/src/components/VoicesTab/VoiceInspector.tsx

@@ -2,6 +2,7 @@ import { zodResolver } from '@hookform/resolvers/zod';
 import { Edit2, Mic, X } from 'lucide-react';
 import { useEffect, useRef, useState } from 'react';
 import { useForm } from 'react-hook-form';
+import { useTranslation } from 'react-i18next';
 import * as z from 'zod';
 import { EffectsChainEditor } from '@/components/Effects/EffectsChainEditor';
 import { Button } from '@/components/ui/button';
@@ -38,19 +39,26 @@ import { cn } from '@/lib/utils/cn';
 import { usePlayerStore } from '@/stores/playerStore';
 import { useServerStore } from '@/stores/serverStore';
 
-const profileSchema = z.object({
-  name: z.string().min(1, 'Name is required').max(100),
-  description: z.string().max(500).optional(),
-  language: z.enum(LANGUAGE_CODES as [LanguageCode, ...LanguageCode[]]),
-});
+function makeProfileSchema(t: (key: string) => string) {
+  return z.object({
+    name: z.string().min(1, t('profileForm.validation.nameRequired')).max(100),
+    description: z.string().max(500).optional(),
+    language: z.enum(LANGUAGE_CODES as [LanguageCode, ...LanguageCode[]]),
+  });
+}
 
-type ProfileFormValues = z.infer<typeof profileSchema>;
+type ProfileFormValues = {
+  name: string;
+  description?: string;
+  language: LanguageCode;
+};
 
 interface VoiceInspectorProps {
   profileId: string;
 }
 
 export function VoiceInspector({ profileId }: VoiceInspectorProps) {
+  const { t } = useTranslation();
   const { data: profile } = useProfile(profileId);
   const audioUrl = usePlayerStore((state) => state.audioUrl);
   const isPlayerVisible = !!audioUrl;
@@ -68,7 +76,7 @@ export function VoiceInspector({ profileId }: VoiceInspectorProps) {
   const [effectsDirty, setEffectsDirty] = useState(false);
 
   const form = useForm<ProfileFormValues>({
-    resolver: zodResolver(profileSchema),
+    resolver: zodResolver(makeProfileSchema(t)),
     defaultValues: {
       name: '',
       description: '',
@@ -104,32 +112,31 @@ export function VoiceInspector({ profileId }: VoiceInspectorProps) {
     if (!file) return;
     if (!file.type.startsWith('image/')) {
       toast({
-        title: 'Invalid file type',
-        description: 'Please select PNG, JPG, or WebP',
+        title: t('profileForm.toast.invalidFile'),
+        description: t('voiceInspector.toast.invalidImageFormat'),
         variant: 'destructive',
       });
       return;
     }
     if (file.size > 5 * 1024 * 1024) {
       toast({
-        title: 'File too large',
-        description: 'Image must be less than 5MB',
+        title: t('profileForm.toast.fileTooLarge'),
+        description: t('profileForm.toast.imageTooLargeDescription'),
         variant: 'destructive',
       });
       return;
     }
-    // Upload immediately
     uploadAvatar.mutate(
       { profileId, file },
       {
         onSuccess: () => {
           setAvatarPreview(URL.createObjectURL(file));
-          toast({ title: 'Avatar updated' });
+          toast({ title: t('voiceInspector.toast.avatarUpdated') });
         },
         onError: (err) => {
           toast({
-            title: 'Avatar upload failed',
-            description: err instanceof Error ? err.message : 'Unknown error',
+            title: t('profileForm.toast.avatarUploadFailed'),
+            description: err instanceof Error ? err.message : t('common.unknownError'),
             variant: 'destructive',
           });
         },
@@ -141,11 +148,11 @@ export function VoiceInspector({ profileId }: VoiceInspectorProps) {
     if (profile?.avatar_path) {
       try {
         await deleteAvatar.mutateAsync(profileId);
-        toast({ title: 'Avatar removed' });
+        toast({ title: t('profileForm.toast.avatarRemoved') });
       } catch (err) {
         toast({
-          title: 'Failed to remove avatar',
-          description: err instanceof Error ? err.message : 'Unknown error',
+          title: t('profileForm.toast.avatarRemoveFailed'),
+          description: err instanceof Error ? err.message : t('common.unknownError'),
           variant: 'destructive',
         });
       }
@@ -174,19 +181,25 @@ export function VoiceInspector({ profileId }: VoiceInspectorProps) {
           setEffectsDirty(false);
         } catch (fxError) {
           toast({
-            title: 'Effects update failed',
-            description: fxError instanceof Error ? fxError.message : 'Failed to save effects',
+            title: t('profileForm.toast.effectsUpdateFailed'),
+            description:
+              fxError instanceof Error
+                ? fxError.message
+                : t('profileForm.toast.effectsUpdateFailedFallback'),
             variant: 'destructive',
           });
           return;
         }
       }
 
-      toast({ title: 'Voice updated', description: `"${data.name}" saved.` });
+      toast({
+        title: t('profileForm.toast.voiceUpdated'),
+        description: t('voiceInspector.toast.savedDescription', { name: data.name }),
+      });
     } catch (error) {
       toast({
-        title: 'Error',
-        description: error instanceof Error ? error.message : 'Failed to save profile',
+        title: t('common.error'),
+        description: error instanceof Error ? error.message : t('profileForm.toast.saveFailed'),
         variant: 'destructive',
       });
     }
@@ -195,7 +208,7 @@ export function VoiceInspector({ profileId }: VoiceInspectorProps) {
   if (!profile) {
     return (
       <div className="flex items-center justify-center h-full text-muted-foreground text-sm">
-        Loading...
+        {t('voiceInspector.loading')}
       </div>
     );
   }
@@ -256,9 +269,9 @@ export function VoiceInspector({ profileId }: VoiceInspectorProps) {
                 name="name"
                 render={({ field }) => (
                   <FormItem>
-                    <FormLabel>Name</FormLabel>
+                    <FormLabel>{t('profileForm.fields.name')}</FormLabel>
                     <FormControl>
-                      <Input placeholder="My Voice" {...field} />
+                      <Input placeholder={t('profileForm.fields.namePlaceholder')} {...field} />
                     </FormControl>
                     <FormMessage />
                   </FormItem>
@@ -270,9 +283,13 @@ export function VoiceInspector({ profileId }: VoiceInspectorProps) {
                 name="description"
                 render={({ field }) => (
                   <FormItem>
-                    <FormLabel>Description</FormLabel>
+                    <FormLabel>{t('voiceInspector.fields.description')}</FormLabel>
                     <FormControl>
-                      <Textarea placeholder="Describe this voice..." rows={2} {...field} />
+                      <Textarea
+                        placeholder={t('profileForm.fields.descriptionPlaceholder')}
+                        rows={2}
+                        {...field}
+                      />
                     </FormControl>
                     <FormMessage />
                   </FormItem>
@@ -284,7 +301,7 @@ export function VoiceInspector({ profileId }: VoiceInspectorProps) {
                 name="language"
                 render={({ field }) => (
                   <FormItem>
-                    <FormLabel>Language</FormLabel>
+                    <FormLabel>{t('profileForm.fields.language')}</FormLabel>
                     <Select onValueChange={field.onChange} value={field.value}>
                       <FormControl>
                         <SelectTrigger>
@@ -306,9 +323,9 @@ export function VoiceInspector({ profileId }: VoiceInspectorProps) {
 
               {/* Effects */}
               <div className="space-y-2">
-                <FormLabel>Default Effects</FormLabel>
+                <FormLabel>{t('profileForm.fields.defaultEffects')}</FormLabel>
                 <p className="text-xs text-muted-foreground">
-                  Applied automatically to new generations with this voice.
+                  {t('voiceInspector.defaultEffectsHint')}
                 </p>
                 <EffectsChainEditor
                   value={effectsChain}
@@ -323,7 +340,9 @@ export function VoiceInspector({ profileId }: VoiceInspectorProps) {
               {/* Save */}
               {isDirty && (
                 <Button type="submit" className="w-full" disabled={updateProfile.isPending}>
-                  {updateProfile.isPending ? 'Saving...' : 'Save Changes'}
+                  {updateProfile.isPending
+                    ? t('profileForm.actions.saving')
+                    : t('profileForm.actions.saveChanges')}
                 </Button>
               )}
             </div>

app/src/components/VoicesTab/VoicesTab.tsx

@@ -1,6 +1,7 @@
 import { useQuery, useQueryClient } from '@tanstack/react-query';
 import { Mic, Plus, Search, Sparkles } from 'lucide-react';
 import { useEffect, useMemo, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 
@@ -25,6 +26,7 @@ import { useUIStore } from '@/stores/uiStore';
 import { VoiceInspector } from './VoiceInspector';
 
 export function VoicesTab() {
+  const { t } = useTranslation();
   const { data: profiles, isLoading } = useProfiles();
   const queryClient = useQueryClient();
   const setDialogOpen = useUIStore((state) => state.setProfileDialogOpen);
@@ -95,7 +97,7 @@ export function VoicesTab() {
   if (isLoading) {
     return (
       <div className="flex items-center justify-center h-full">
-        <div className="text-muted-foreground">Loading voices...</div>
+        <div className="text-muted-foreground">{t('voicesTab.loading')}</div>
       </div>
     );
   }
@@ -110,12 +112,12 @@ export function VoicesTab() {
         {/* Fixed Header */}
         <div className="absolute top-0 left-0 right-0 z-20 pl-8 pr-8">
           <div className="flex items-center gap-3 mb-6">
-            <h1 className="text-2xl font-bold">Voices</h1>
+            <h1 className="text-2xl font-bold">{t('voicesTab.title')}</h1>
             <div className="flex-1" />
             <div className="relative w-[240px]">
               <Search className="absolute left-2.5 top-1/2 -translate-y-1/2 h-3.5 w-3.5 text-muted-foreground" />
               <Input
-                placeholder="Search voices..."
+                placeholder={t('voicesTab.searchPlaceholder')}
                 value={search}
                 onChange={(e) => setSearch(e.target.value)}
                 className="h-10 pl-8 text-sm rounded-full focus-visible:ring-0 focus-visible:ring-offset-0"
@@ -123,7 +125,7 @@ export function VoicesTab() {
             </div>
             <Button onClick={() => setDialogOpen(true)}>
               <Plus className="h-4 w-4 mr-2" />
-              New Voice
+              {t('voicesTab.newVoice')}
             </Button>
           </div>
         </div>
@@ -139,12 +141,12 @@ export function VoicesTab() {
           <Table className="table-fixed [&_td:first-child]:pl-8 [&_th:first-child]:pl-8">
             <TableHeader>
               <TableRow>
-                <TableHead className="w-[30%]">Name</TableHead>
-                <TableHead className="w-[10%]">Language</TableHead>
-                <TableHead className="w-[10%]">Generations</TableHead>
-                <TableHead className="w-[8%]">Samples</TableHead>
-                <TableHead className="w-[8%]">Effects</TableHead>
-                <TableHead className="w-[24%]">Channels</TableHead>
+                <TableHead className="w-[30%]">{t('voicesTab.columns.name')}</TableHead>
+                <TableHead className="w-[10%]">{t('voicesTab.columns.language')}</TableHead>
+                <TableHead className="w-[10%]">{t('voicesTab.columns.generations')}</TableHead>
+                <TableHead className="w-[8%]">{t('voicesTab.columns.samples')}</TableHead>
+                <TableHead className="w-[8%]">{t('voicesTab.columns.effects')}</TableHead>
+                <TableHead className="w-[24%]">{t('voicesTab.columns.channels')}</TableHead>
                 <TableHead className="w-6"></TableHead>
               </TableRow>
             </TableHeader>
@@ -194,6 +196,7 @@ function VoiceRow({
   channels,
   onChannelChange,
 }: VoiceRowProps) {
+  const { t } = useTranslation();
   const serverUrl = useServerStore((state) => state.serverUrl);
   const [avatarError, setAvatarError] = useState(false);
   const avatarUrl = profile.avatar_path ? `${serverUrl}/profiles/${profile.id}/avatar` : null;
@@ -212,7 +215,7 @@ function VoiceRow({
             {avatarUrl && !avatarError ? (
               <img
                 src={avatarUrl}
-                alt={`${profile.name} avatar`}
+                alt={t('voicesTab.avatarAlt', { name: profile.name })}
                 className="h-full w-full object-cover"
                 onError={() => setAvatarError(true)}
               />
@@ -248,11 +251,11 @@ function VoiceRow({
         <MultiSelect
           options={channels.map((ch) => ({
             value: ch.id,
-            label: `${ch.name}${ch.is_default ? ' (Default)' : ''}`,
+            label: ch.is_default ? t('voicesTab.channelDefaultLabel', { name: ch.name }) : ch.name,
           }))}
           value={channelIds}
           onChange={onChannelChange}
-          placeholder="Select channels..."
+          placeholder={t('voicesTab.selectChannels')}
           className="w-full"
         />
       </TableCell>

app/src/components/ui/alert-dialog.tsx

@@ -111,4 +111,4 @@ export {
   AlertDialogDescription,
   AlertDialogAction,
   AlertDialogCancel,
-};
+};

app/src/components/ui/select.tsx

@@ -16,7 +16,7 @@ const SelectTrigger = React.forwardRef<
   <SelectPrimitive.Trigger
     ref={ref}
     className={cn(
-      'flex h-10 w-full items-center justify-between rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background placeholder:text-muted-foreground focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1',
+      'flex h-10 w-full items-center justify-between rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background placeholder:text-muted-foreground focus:outline-none focus:bg-muted/50 disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1',
       className,
     )}
     {...props}

app/src/components/ui/slider.tsx

@@ -1,5 +1,5 @@
-import * as React from 'react';
 import * as SliderPrimitive from '@radix-ui/react-slider';
+import * as React from 'react';
 import { cn } from '@/lib/utils/cn';
 
 const Slider = React.forwardRef<
@@ -14,7 +14,7 @@ const Slider = React.forwardRef<
     <SliderPrimitive.Track className="relative h-2 w-full grow overflow-hidden rounded-full bg-secondary">
       <SliderPrimitive.Range className="absolute h-full bg-primary" />
     </SliderPrimitive.Track>
-    <SliderPrimitive.Thumb className="block h-5 w-5 rounded-full border-2 border-primary bg-background ring-offset-background transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 translate-x-0.5" />
+    <SliderPrimitive.Thumb className="block h-0 w-0 outline-none disabled:pointer-events-none disabled:opacity-50 after:block after:h-5 after:w-5 after:rounded-full after:border-2 after:border-primary after:bg-background after:ring-offset-background after:transition-colors after:absolute after:top-1/2 after:left-1/2 after:-translate-x-1/2 after:-translate-y-1/2 focus-visible:after:ring-2 focus-visible:after:ring-ring focus-visible:after:ring-offset-2" />
   </SliderPrimitive.Root>
 ));
 Slider.displayName = SliderPrimitive.Root.displayName;

app/src/components/ui/toaster.tsx

@@ -1,3 +1,4 @@
+import { usePlayerStore } from '@/stores/playerStore';
 import {
   Toast,
   ToastClose,
@@ -10,6 +11,7 @@ import { useToast } from './use-toast';
 
 export function Toaster() {
   const { toasts } = useToast();
+  const isPlayerOpen = !!usePlayerStore((s) => s.audioUrl);
 
   return (
     <ToastProvider>
@@ -23,7 +25,7 @@ export function Toaster() {
           <ToastClose />
         </Toast>
       ))}
-      <ToastViewport />
+      <ToastViewport className={isPlayerOpen ? 'sm:bottom-44' : ''} />
     </ToastProvider>
   );
 }

app/src/components/ui/toggle.tsx

@@ -0,0 +1,48 @@
+import * as React from 'react';
+import { cn } from '@/lib/utils/cn';
+
+export interface ToggleProps {
+  checked?: boolean;
+  onCheckedChange?: (checked: boolean) => void;
+  disabled?: boolean;
+  className?: string;
+  id?: string;
+}
+
+const Toggle = React.forwardRef<HTMLButtonElement, ToggleProps>(
+  ({ checked = false, onCheckedChange, disabled = false, className, id, ...props }, ref) => {
+    return (
+      <button
+        type="button"
+        ref={ref}
+        id={id}
+        role="switch"
+        aria-checked={checked}
+        disabled={disabled}
+        onClick={() => {
+          if (!disabled && onCheckedChange) {
+            onCheckedChange(!checked);
+          }
+        }}
+        className={cn(
+          'relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors',
+          'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2',
+          checked ? 'bg-accent' : 'bg-muted-foreground/25',
+          disabled ? 'opacity-50 cursor-not-allowed' : 'cursor-pointer',
+          className,
+        )}
+        {...props}
+      >
+        <span
+          className={cn(
+            'pointer-events-none block h-4 w-4 rounded-full bg-white shadow-sm transition-transform',
+            checked ? 'translate-x-[18px]' : 'translate-x-[2px]',
+          )}
+        />
+      </button>
+    );
+  },
+);
+Toggle.displayName = 'Toggle';
+
+export { Toggle };

app/src/global.d.ts

@@ -1,3 +1,8 @@
 interface Window {
   __voiceboxServerStartedByApp?: boolean;
 }
+
+declare module 'virtual:changelog' {
+  const raw: string;
+  export default raw;
+}

app/src/hooks/useAutoUpdater.ts

@@ -5,7 +5,15 @@ import type { UpdateStatus } from '@/platform/types';
 // Re-export UpdateStatus for backwards compatibility
 export type { UpdateStatus };
 
-export function useAutoUpdater(checkOnMount = false) {
+interface UseAutoUpdaterOptions {
+  checkOnMount?: boolean;
+  showToast?: boolean;
+}
+
+export function useAutoUpdater(options: boolean | UseAutoUpdaterOptions = false) {
+  const { checkOnMount } =
+    typeof options === 'boolean' ? { checkOnMount: options } : { checkOnMount: options.checkOnMount ?? false };
+
   const platform = usePlatform();
   const [status, setStatus] = useState<UpdateStatus>(platform.updater.getStatus());
   const hasCheckedRef = useRef(false);
@@ -38,10 +46,11 @@ export function useAutoUpdater(checkOnMount = false) {
   useEffect(() => {
     if (checkOnMount && platform.metadata.isTauri && !hasCheckedRef.current) {
       hasCheckedRef.current = true;
-      checkForUpdates();
+      checkForUpdates().catch((error) => {
+        console.error('Auto update check failed:', error);
+      });
     }
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [platform.metadata.isTauricheckOnMountcheckForUpdates]);
+  }, [checkOnMount, checkForUpdates, platform.metadata.isTauri]);
 
   return {
     status,

app/src/hooks/useAutoUpdater.tsx

@@ -73,7 +73,7 @@ export function useAutoUpdater(options: boolean | UseAutoUpdaterOptions = false)
     }
     // Empty dependency array - only run once on mount
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [platform.metadata.isTauricheckOnMountcheckForUpdates]);
+  }, [checkOnMount, checkForUpdates, platform.metadata.isTauri]);
 
   // Show toast when update is available
   useEffect(() => {

app/src/i18n/index.ts

@@ -0,0 +1,40 @@
+import i18n from 'i18next';
+import LanguageDetector from 'i18next-browser-languagedetector';
+import { initReactI18next } from 'react-i18next';
+import en from './locales/en/translation.json';
+import ja from './locales/ja/translation.json';
+import zhCN from './locales/zh-CN/translation.json';
+import zhTW from './locales/zh-TW/translation.json';
+
+export const SUPPORTED_LANGUAGES = [
+  { code: 'en', label: 'English' },
+  { code: 'ja', label: '日本語' },
+  { code: 'zh-CN', label: '简体中文' },
+  { code: 'zh-TW', label: '繁體中文' },
+] as const;
+
+export type LanguageCode = (typeof SUPPORTED_LANGUAGES)[number]['code'];
+
+i18n
+  .use(LanguageDetector)
+  .use(initReactI18next)
+  .init({
+    resources: {
+      en: { translation: en },
+      ja: { translation: ja },
+      'zh-CN': { translation: zhCN },
+      'zh-TW': { translation: zhTW },
+    },
+    fallbackLng: 'en',
+    supportedLngs: SUPPORTED_LANGUAGES.map((l) => l.code),
+    load: 'currentOnly',
+    interpolation: { escapeValue: false },
+    react: { useSuspense: false },
+    detection: {
+      order: ['localStorage', 'navigator'],
+      lookupLocalStorage: 'voicebox:lang',
+      caches: ['localStorage'],
+    },
+  });
+
+export default i18n;

app/src/i18n/locales/en/translation.json

@@ -0,0 +1,834 @@
+{
+  "common": {
+    "cancel": "Cancel",
+    "save": "Save",
+    "delete": "Delete",
+    "edit": "Edit",
+    "close": "Close",
+    "confirm": "Confirm",
+    "loading": "Loading…",
+    "error": "Error",
+    "unknown": "Unknown",
+    "unknownError": "Unknown error"
+  },
+  "nav": {
+    "generate": "Generate",
+    "stories": "Stories",
+    "voices": "Voices",
+    "effects": "Effects",
+    "audio": "Audio",
+    "models": "Models",
+    "settings": "Settings",
+    "updateBadge": "Update"
+  },
+  "voicesTab": {
+    "title": "Voices",
+    "loading": "Loading voices…",
+    "searchPlaceholder": "Search voices…",
+    "newVoice": "New Voice",
+    "avatarAlt": "{{name}} avatar",
+    "selectChannels": "Select channels…",
+    "channelDefaultLabel": "{{name}} (Default)",
+    "columns": {
+      "name": "Name",
+      "language": "Language",
+      "generations": "Generations",
+      "samples": "Samples",
+      "effects": "Effects",
+      "channels": "Channels"
+    }
+  },
+  "voiceInspector": {
+    "loading": "Loading…",
+    "defaultEffectsHint": "Applied automatically to new generations with this voice.",
+    "fields": {
+      "description": "Description"
+    },
+    "toast": {
+      "invalidImageFormat": "Please select PNG, JPG, or WebP",
+      "avatarUpdated": "Avatar updated",
+      "savedDescription": "\"{{name}}\" saved."
+    }
+  },
+  "audioChannels": {
+    "title": "Audio Channels",
+    "newChannel": "New Channel",
+    "loading": "Loading…",
+    "confirmDelete": "Delete this channel?",
+    "noVoicesAssigned": "No voices assigned",
+    "selectDevice": "Select device",
+    "addDevice": "Add device",
+    "addVoice": "Add voice",
+    "defaultSuffix": "default",
+    "empty": {
+      "message": "No audio channels yet. Create your first channel to route voices to specific devices.",
+      "action": "Create Channel"
+    },
+    "labels": {
+      "outputDevices": "Output Devices",
+      "assignedVoices": "Assigned Voices"
+    },
+    "devices": {
+      "title": "Available Devices",
+      "defaultNote": "Default channel uses system default device",
+      "toggleHint": "Click devices to add or remove them from the selected channel",
+      "selectHint": "Select a channel to assign devices",
+      "empty": "No audio devices found",
+      "requiresTauri": "Audio device selection requires Tauri"
+    },
+    "fields": {
+      "name": "Channel Name",
+      "namePlaceholder": "e.g., Virtual Cable, Broadcast"
+    },
+    "createDialog": {
+      "title": "Create Audio Channel",
+      "description": "Create a new audio channel (bus) to route voices to specific output devices.",
+      "action": "Create"
+    },
+    "editDialog": {
+      "title": "Edit Channel",
+      "description": "Update channel settings and voice assignments."
+    }
+  },
+  "profileForm": {
+    "createTitle": "Create Voice",
+    "editTitle": "Edit Voice",
+    "createDescription": "Create a new voice profile from an audio sample or a built-in voice.",
+    "editDescription": "Update your voice profile details and manage samples.",
+    "draftRestored": "Draft restored",
+    "discard": "Discard",
+    "source": {
+      "clone": "Clone from audio",
+      "builtin": "Built-in voice"
+    },
+    "builtin": {
+      "hint": "Choose a pre-built voice. These don't require an audio sample.",
+      "badge": "Built-in Voice",
+      "note": "This profile uses a built-in voice. The voice cannot be changed after creation."
+    },
+    "sampleTabs": {
+      "upload": "Upload",
+      "record": "Record",
+      "system": "System Audio"
+    },
+    "fields": {
+      "engine": "Engine",
+      "voice": "Voice",
+      "name": "Name",
+      "namePlaceholder": "My Voice",
+      "descriptionLabel": "Description (Optional)",
+      "descriptionPlaceholder": "Describe this voice…",
+      "language": "Language",
+      "referenceText": "Reference Text",
+      "referenceTextPlaceholder": "Enter the exact text spoken in the audio…",
+      "defaultEngine": "Default Engine",
+      "noPreference": "No preference",
+      "defaultEngineHint": "Auto-selects this engine when the profile is chosen.",
+      "defaultEffects": "Default Effects",
+      "defaultEffectsHint": "Effects applied automatically to all new generations with this voice."
+    },
+    "avatar": {
+      "alt": "Avatar preview"
+    },
+    "actions": {
+      "saving": "Saving…",
+      "saveChanges": "Save Changes",
+      "createProfile": "Create Profile"
+    },
+    "validation": {
+      "nameRequired": "Name is required",
+      "referenceRequired": "Reference text is required when adding a sample",
+      "sampleRequired": "Audio sample is required",
+      "referenceTextRequired": "Reference text is required",
+      "audioTooLong": "Audio is too long ({{duration}}). Maximum duration is {{max}}.",
+      "audioFailed": "Failed to validate audio file. Please try a different file."
+    },
+    "toast": {
+      "recordingComplete": "Recording complete",
+      "recordingCompleteDescription": "Audio has been recorded successfully.",
+      "recordingError": "Recording error",
+      "systemAudioCaptured": "System audio captured",
+      "systemAudioCapturedDescription": "Audio has been captured successfully.",
+      "systemAudioError": "System audio capture error",
+      "transcribeFailed": "Transcription failed",
+      "transcribeFailedFallback": "Failed to transcribe audio",
+      "noFile": "No file selected",
+      "noFileDescription": "Please select an audio file first.",
+      "invalidFile": "Invalid file type",
+      "invalidImageFormat": "Please select an image file (PNG, JPG, or WebP)",
+      "fileTooLarge": "File too large",
+      "imageTooLargeDescription": "Image must be less than 5MB",
+      "avatarRemoved": "Avatar removed",
+      "avatarRemovedDescription": "Avatar image has been removed successfully.",
+      "avatarRemoveFailed": "Failed to remove avatar",
+      "avatarUploadFailed": "Avatar upload failed",
+      "avatarUploadFailedFallback": "Failed to upload avatar",
+      "effectsUpdateFailed": "Effects update failed",
+      "effectsUpdateFailedFallback": "Failed to save effects chain",
+      "voiceUpdated": "Voice updated",
+      "voiceUpdatedDescription": "\"{{name}}\" has been updated successfully.",
+      "noVoiceSelected": "No voice selected",
+      "noVoiceSelectedDescription": "Please select a built-in voice.",
+      "profileCreated": "Profile created",
+      "profileCreatedBuiltin": "\"{{name}}\" has been created with a built-in voice.",
+      "profileCreatedSample": "\"{{name}}\" has been created with a sample.",
+      "sampleRequired": "Audio sample required",
+      "sampleRequiredDescription": "Please provide an audio sample to create the voice profile.",
+      "referenceTextRequired": "Reference text required",
+      "referenceTextRequiredDescription": "Please provide the reference text for the audio sample.",
+      "invalidAudio": "Invalid audio file",
+      "invalidAudioDescription": "Audio duration is {{duration}}, but maximum is {{max}}.",
+      "validationError": "Validation error",
+      "rollbackFailed": "Rollback failed",
+      "rollbackFailedDescription": "Created profile could not be removed after sample upload failure.",
+      "profileRolledBack": "The profile was rolled back.",
+      "sampleFailed": "Failed to add sample",
+      "sampleFailedDescription": "Failed to add sample.",
+      "sampleFailedRolledBack": "Failed to add sample. The profile was rolled back.",
+      "saveFailed": "Failed to save profile"
+    }
+  },
+  "audioSample": {
+    "chooseFile": "Choose File",
+    "uploadHint": "Click to choose a file or drag and drop. Maximum duration: 30 seconds.",
+    "fileUploaded": "File uploaded",
+    "fileLabel": "File: {{name}}",
+    "play": "Play",
+    "pause": "Pause",
+    "transcribe": "Transcribe",
+    "transcribing": "Transcribing…",
+    "remove": "Remove",
+    "startRecording": "Start Recording",
+    "recordHint": "Click to start recording. Maximum duration: 30 seconds.",
+    "stopRecording": "Stop Recording",
+    "remaining": "{{time}} remaining",
+    "recordingComplete": "Recording complete",
+    "recordAgain": "Record Again",
+    "startCapture": "Start Capture",
+    "systemHint": "Capture audio from your system. Maximum duration: 30 seconds.",
+    "stopCapture": "Stop Capture",
+    "captureComplete": "Capture complete",
+    "captureAgain": "Capture Again"
+  },
+  "sampleList": {
+    "loading": "Loading samples…",
+    "empty": {
+      "title": "No samples yet",
+      "hint": "Add your first audio sample to get started"
+    },
+    "editing": "Editing transcription",
+    "placeholder": "Enter reference text…",
+    "saving": "Saving…",
+    "editTranscription": "Edit transcription",
+    "deleteSample": "Delete sample",
+    "addSample": "Add Sample",
+    "note": "Note: A single 30-second sample is the sweet spot. Quality may decrease with multiple samples. In a future update samples might be interchangeable and tagged for varying styles of the same voice.",
+    "deleteDialog": {
+      "title": "Delete Sample",
+      "description": "Are you sure you want to delete this audio sample? This action cannot be undone.",
+      "deleting": "Deleting…"
+    },
+    "player": {
+      "play": "Play sample",
+      "pause": "Pause sample",
+      "stop": "Stop",
+      "stopAria": "Stop playback",
+      "position": "Sample playback position",
+      "positionValue": "{{current}} of {{total}}"
+    },
+    "toast": {
+      "invalidText": "Invalid text",
+      "invalidTextDescription": "Reference text cannot be empty.",
+      "updated": "Sample updated",
+      "updatedDescription": "Reference text has been updated successfully.",
+      "updateFailed": "Update failed",
+      "updateFailedFallback": "Failed to update sample"
+    }
+  },
+  "profiles": {
+    "card": {
+      "noDescription": "No description",
+      "designed": "designed",
+      "export": "Export profile",
+      "edit": "Edit profile",
+      "delete": "Delete profile",
+      "selectLabel": "{{name}}, {{language}}. Select as voice for generation.",
+      "selectLabelSelected": "{{name}}, {{language}}. Selected as voice for generation."
+    },
+    "list": {
+      "errorLoading": "Error loading profiles: {{message}}",
+      "empty": "No voice profiles yet. Create your first profile to get started.",
+      "createVoice": "Create Voice",
+      "unsupportedNote": "Only supported voice profiles can be selected for the current model."
+    },
+    "deleteDialog": {
+      "title": "Delete Profile",
+      "body": "Are you sure you want to delete \"{{name}}\"? This action cannot be undone.",
+      "deleting": "Deleting…"
+    }
+  },
+  "effects": {
+    "title": "Effects",
+    "newPreset": "New Preset",
+    "noDescription": "No description",
+    "placeholder": "Select a preset or create a new one",
+    "effectCount_one": "{{count}} effect",
+    "effectCount_other": "{{count}} effects",
+    "sections": {
+      "builtin": "Built-in",
+      "custom": "Custom",
+      "new": "New"
+    },
+    "badge": {
+      "builtin": "built-in"
+    },
+    "unsaved": {
+      "title": "Unsaved Preset",
+      "hint": "Configure effects in the panel on the right."
+    },
+    "detail": {
+      "newTitle": "New Preset",
+      "editTitle": "Edit Preset",
+      "savePreset": "Save Preset",
+      "saveAsCustom": "Save as Custom",
+      "saving": "Saving…",
+      "deleting": "Deleting…"
+    },
+    "fields": {
+      "name": "Name",
+      "namePlaceholder": "My preset…",
+      "description": "Description",
+      "descriptionPlaceholder": "Describe what this preset does…"
+    },
+    "preview": {
+      "label": "Preview",
+      "button": "Preview",
+      "processing": "Processing…",
+      "hint": "Preview applies effects to the clean version without saving."
+    },
+    "saveAs": {
+      "title": "Save as Custom Preset",
+      "description": "Create a new custom preset based on the current effects chain.",
+      "suggestedName": "{{name}} (Copy)"
+    },
+    "toast": {
+      "saved": "Preset saved",
+      "createdDescription": "\"{{name}}\" has been created.",
+      "updated": "Preset updated",
+      "deleted": "Preset deleted",
+      "saveFailed": "Failed to save",
+      "deleteFailed": "Failed to delete",
+      "previewFailed": "Preview failed",
+      "nameRequired": "Name required"
+    },
+    "chain": {
+      "loadPreset": "Load preset…",
+      "addEffect": "Add effect…",
+      "clear": "Clear",
+      "enable": "Enable",
+      "disable": "Disable",
+      "remove": "Remove"
+    },
+    "types": {
+      "chorus": {
+        "label": "Chorus / Flanger",
+        "params": {
+          "rate_hz": "LFO speed (Hz)",
+          "depth": "Modulation depth",
+          "feedback": "Feedback amount",
+          "centre_delay_ms": "Centre delay (ms)",
+          "mix": "Wet/dry mix"
+        }
+      },
+      "reverb": {
+        "label": "Reverb",
+        "params": {
+          "room_size": "Room size",
+          "damping": "High frequency damping",
+          "wet_level": "Wet level",
+          "dry_level": "Dry level",
+          "width": "Stereo width"
+        }
+      },
+      "delay": {
+        "label": "Delay",
+        "params": {
+          "delay_seconds": "Delay time (seconds)",
+          "feedback": "Feedback amount",
+          "mix": "Wet/dry mix"
+        }
+      },
+      "compressor": {
+        "label": "Compressor",
+        "params": {
+          "threshold_db": "Threshold (dB)",
+          "ratio": "Compression ratio",
+          "attack_ms": "Attack time (ms)",
+          "release_ms": "Release time (ms)"
+        }
+      },
+      "gain": {
+        "label": "Gain",
+        "params": {
+          "gain_db": "Gain (dB)"
+        }
+      },
+      "highpass": {
+        "label": "High-Pass Filter",
+        "params": {
+          "cutoff_frequency_hz": "Cutoff frequency (Hz)"
+        }
+      },
+      "lowpass": {
+        "label": "Low-Pass Filter",
+        "params": {
+          "cutoff_frequency_hz": "Cutoff frequency (Hz)"
+        }
+      },
+      "pitch_shift": {
+        "label": "Pitch Shift",
+        "params": {
+          "semitones": "Semitones to shift"
+        }
+      }
+    },
+    "builtinPresets": {
+      "Robotic": {
+        "name": "Robotic",
+        "description": "Metallic robotic voice (flanger with slow LFO and high feedback)"
+      },
+      "Radio": {
+        "name": "Radio",
+        "description": "Thin AM-radio voice with band-pass filtering and light compression"
+      },
+      "Echo Chamber": {
+        "name": "Echo Chamber",
+        "description": "Spacious reverb with trailing echo"
+      },
+      "Deep Voice": {
+        "name": "Deep Voice",
+        "description": "Lower pitch with added warmth"
+      }
+    }
+  },
+  "stories": {
+    "title": "Stories",
+    "newStory": "New Story",
+    "loading": "Loading stories…",
+    "empty": {
+      "title": "No stories yet",
+      "hint": "Create your first story to get started"
+    },
+    "row": {
+      "itemCount_one": "{{count}} item",
+      "itemCount_other": "{{count}} items",
+      "ariaLabel": "Story {{name}}, {{count}} items, {{updated}}",
+      "actionsLabel": "Actions for {{name}}"
+    },
+    "createDialog": {
+      "title": "Create New Story",
+      "description": "Create a new story to organize your voice generations into conversations.",
+      "action": "Create",
+      "creating": "Creating…"
+    },
+    "editDialog": {
+      "title": "Edit Story",
+      "description": "Update the story name and description.",
+      "saving": "Saving…"
+    },
+    "deleteDialog": {
+      "title": "Are you sure?",
+      "description": "This will permanently delete the story and all its items. This action cannot be undone.",
+      "deleting": "Deleting…"
+    },
+    "fields": {
+      "name": "Name",
+      "namePlaceholder": "My Story",
+      "descriptionLabel": "Description (optional)",
+      "descriptionPlaceholder": "A conversation between…"
+    },
+    "toast": {
+      "nameRequired": "Name required",
+      "nameRequiredDescription": "Please enter a story name",
+      "created": "Story created",
+      "createdDescription": "\"{{name}}\" has been created",
+      "createFailed": "Failed to create story",
+      "updateFailed": "Failed to update story",
+      "deleteFailed": "Failed to delete story"
+    }
+  },
+  "storyContent": {
+    "selectStory": {
+      "title": "Select a story",
+      "hint": "Choose a story from the list to view its content"
+    },
+    "loading": "Loading story…",
+    "notFound": {
+      "title": "Story not found",
+      "hint": "The selected story could not be loaded"
+    },
+    "generatingCount_one": "Generating {{count}} audio",
+    "generatingCount_other": "Generating {{count}} audios",
+    "add": "Add",
+    "searchPlaceholder": "Search by name or transcript…",
+    "searchNoMatches": "No matching generations found",
+    "searchNoAvailable": "No available generations",
+    "exportAudio": "Export Audio",
+    "empty": {
+      "title": "No items in this story",
+      "hint": "Generate speech using the box below to add items"
+    },
+    "itemActions": {
+      "playFromHere": "Play from here",
+      "removeFromStory": "Remove from Story"
+    },
+    "toast": {
+      "removeFailed": "Failed to remove item",
+      "reorderFailed": "Failed to reorder items",
+      "exportFailed": "Failed to export audio",
+      "addFailed": "Failed to add generation"
+    }
+  },
+  "history": {
+    "actions": {
+      "menu": "Actions",
+      "play": "Play",
+      "exportAudio": "Export Audio",
+      "exportPackage": "Export Package",
+      "applyEffects": "Apply Effects",
+      "regenerate": "Regenerate"
+    },
+    "deleteDialog": {
+      "title": "Delete Generation",
+      "body": "Are you sure you want to delete this generation from \"{{name}}\"? This action cannot be undone.",
+      "deleting": "Deleting…"
+    },
+    "clearFailedDialog": {
+      "title": "Clear failed generations",
+      "body_one": "This will permanently delete {{count}} failed generation from your history. This cannot be undone.",
+      "body_other": "This will permanently delete {{count}} failed generations from your history. This cannot be undone.",
+      "clearing": "Clearing…",
+      "clearAll": "Clear all"
+    },
+    "importDialog": {
+      "title": "Import Generation",
+      "body": "Import the generation from \"{{name}}\". This will add it to your history.",
+      "importing": "Importing…",
+      "action": "Import"
+    },
+    "effectsDialog": {
+      "title": "Apply Effects",
+      "body": "Configure post-processing effects to apply to this generation. A new version will be created.",
+      "sourceLabel": "Source",
+      "sourcePlaceholder": "Select source version",
+      "apply": "Apply",
+      "applying": "Applying…"
+    }
+  },
+  "generation": {
+    "placeholder": {
+      "storyWithEffects": "Generate speech for \"{{name}}\"… (type / for effects)",
+      "story": "Generate speech for \"{{name}}\"…",
+      "profile": "Generate speech using {{name}}…",
+      "effectsHint": "Type / for effects like [laugh], [sigh]…",
+      "selectVoice": "Select a voice profile above…"
+    },
+    "button": {
+      "generate": "Generate speech",
+      "generating": "Generating…",
+      "selectFirst": "Select a voice profile first"
+    },
+    "instruct": {
+      "show": "Show delivery instructions",
+      "hide": "Hide delivery instructions",
+      "tooltip": "Delivery instructions (tone, emotion, pace)",
+      "placeholder": "Delivery instructions — e.g. Speak slowly with warmth, Authoritative and clear…"
+    },
+    "voiceSelector": {
+      "placeholder": "Select a voice…"
+    },
+    "effects": {
+      "none": "No effects",
+      "profileDefault": "Profile default"
+    }
+  },
+  "main": {
+    "importVoice": "Import Voice",
+    "createVoice": "Create Voice",
+    "import": {
+      "invalidTitle": "Invalid file type",
+      "invalidDescription": "Please select a valid .voicebox.zip file",
+      "successTitle": "Profile imported",
+      "successDescription": "Voice profile imported successfully",
+      "failedTitle": "Failed to import profile",
+      "dialogTitle": "Import Profile",
+      "dialogDescription": "Import the profile from \"{{name}}\". This will create a new profile with all samples.",
+      "importing": "Importing…",
+      "action": "Import"
+    }
+  },
+  "settings": {
+    "tabs": {
+      "general": "General",
+      "generation": "Generation",
+      "gpu": "GPU",
+      "logs": "Logs",
+      "changelog": "Changelog",
+      "about": "About"
+    },
+    "language": {
+      "label": "Language",
+      "description": "Choose the display language for Voicebox."
+    },
+    "general": {
+      "docs": { "title": "Read the Docs" },
+      "discord": { "title": "Join the Discord", "subtitle": "Get help & share voices" },
+      "serverUrl": {
+        "title": "Server URL",
+        "description": "The address of your voicebox backend server.",
+        "invalidUrl": "Please enter a valid URL",
+        "updatedTitle": "Server URL updated",
+        "updatedDescription": "Connected to {{url}}"
+      },
+      "keepServerRunning": {
+        "title": "Keep server running when app closes",
+        "description": "The server will continue running in the background after closing the app.",
+        "failedTitle": "Failed to update setting",
+        "failedDescription": "Could not sync setting to backend.",
+        "updatedTitle": "Setting updated",
+        "runningDescription": "Server will continue running when app closes",
+        "stoppedDescription": "Server will stop when app closes"
+      },
+      "networkAccess": {
+        "title": "Allow network access",
+        "description": "Makes the server accessible from other devices on your network. Restart the app after changing.",
+        "updatedTitle": "Setting updated",
+        "enabled": "Network access enabled. Restart the app to apply.",
+        "disabled": "Network access disabled. Restart the app to apply."
+      },
+      "connection": {
+        "connecting": "Connecting",
+        "offline": "Offline",
+        "online": "Online"
+      },
+      "updates": {
+        "title": "App Updates",
+        "devSuffix": " (dev)",
+        "devMode": {
+          "title": "Development mode",
+          "description": "Auto-updates are disabled in development mode."
+        },
+        "check": {
+          "title": "Check for updates",
+          "available": "Version {{version}} available",
+          "checking": "Checking…",
+          "upToDate": "You're up to date",
+          "button": "Check"
+        },
+        "error": "Update error",
+        "download": {
+          "title": "Update to {{version}}",
+          "description": "Download and install the latest version.",
+          "button": "Download"
+        },
+        "downloading": "Downloading update…",
+        "ready": {
+          "title": "Update ready to install",
+          "description": "Version {{version}} has been downloaded. Restart to complete.",
+          "button": "Restart Now"
+        }
+      },
+      "api": {
+        "title": "API Access",
+        "description": "Integrate Voicebox into your workflow via the REST API at <code>{{url}}</code>",
+        "viewReference": "View the full API reference",
+        "endpoints": {
+          "generate": "Generate speech",
+          "health": "Server status",
+          "profiles": "List voices",
+          "history": "Past generations"
+        }
+      }
+    },
+    "generation": {
+      "title": "Generation",
+      "description": "Controls for long text generation. These settings apply to all engines.",
+      "chunkLimit": {
+        "title": "Auto-chunking limit",
+        "description": "Long text is split into chunks at sentence boundaries. Lower values can improve quality for long outputs.",
+        "value": "{{chars}} chars"
+      },
+      "crossfade": {
+        "title": "Chunk crossfade",
+        "description": "Blends audio between chunks to smooth transitions. Set to 0 for a hard cut.",
+        "cut": "Cut",
+        "ms": "{{ms}}ms"
+      },
+      "normalize": {
+        "title": "Normalize audio",
+        "description": "Adjusts output volume to a consistent level across generations."
+      },
+      "autoplay": {
+        "title": "Autoplay on generate",
+        "description": "Automatically play audio when a generation completes."
+      },
+      "folder": {
+        "title": "Generations folder",
+        "description": "Where generated audio files are stored on disk.",
+        "open": "Open"
+      }
+    },
+    "gpu": {
+      "cpuOnly": "CPU Only",
+      "vramUsed": "{{mb}} MB VRAM",
+      "noAcceleration": "No GPU acceleration detected",
+      "active": "Active",
+      "cuda": {
+        "title": "CUDA Backend",
+        "description": "NVIDIA GPU acceleration via a downloadable CUDA backend.",
+        "downloading": "Downloading CUDA backend…",
+        "downloadingShort": "Downloading…",
+        "updating": "Updating…"
+      },
+      "restart": {
+        "ready": "Server restarted successfully",
+        "waiting": "Restarting server…",
+        "stopping": "Stopping server…"
+      },
+      "download": {
+        "title": "Download CUDA backend",
+        "description": "~2.4 GB download. Requires an NVIDIA GPU with CUDA support.",
+        "button": "Download"
+      },
+      "switchToCuda": {
+        "title": "Switch to CUDA backend",
+        "description": "CUDA backend is downloaded and ready. Restart to enable.",
+        "button": "Restart"
+      },
+      "switchToCpu": {
+        "title": "Switch to CPU backend",
+        "description": "Disable GPU acceleration. You can re-download CUDA later.",
+        "button": "Switch"
+      },
+      "remove": {
+        "title": "Remove CUDA backend",
+        "description": "Delete the downloaded CUDA binary to free disk space.",
+        "button": "Remove"
+      },
+      "errors": {
+        "downloadFailed": "Download failed",
+        "downloadStart": "Failed to start download",
+        "restartFailed": "Restart failed",
+        "switchCpu": "Failed to switch to CPU",
+        "deleteCuda": "Failed to delete CUDA backend"
+      },
+      "footer": "Voicebox automatically detects and uses the best available GPU on your system. On Apple Silicon Macs, the MLX backend runs natively on the Neural Engine and GPU via Metal Performance Shaders (MPS), with no additional setup required. On Windows and Linux with NVIDIA GPUs, you can download an optional CUDA backend for hardware-accelerated inference. AMD ROCm, Intel XPU, and DirectML are also supported where available through PyTorch. When no GPU is detected, Voicebox falls back to CPU — all engines still work, just slower."
+    },
+    "logs": {
+      "title": "Server Logs",
+      "lineCount_one": "{{count}} line",
+      "lineCount_other": "{{count}} lines",
+      "scrollToBottom": "Scroll to bottom",
+      "clear": "Clear",
+      "empty": "No log output yet.",
+      "devHint": "Server logs are only captured when the app manages the server process (production builds)."
+    },
+    "changelog": {
+      "devBadge": "dev",
+      "showLess": "Show less",
+      "showMore": "Show more"
+    },
+    "about": {
+      "tagline": "The open-source voice synthesis studio. Clone voices, generate speech, apply effects, and build voice-powered apps — all running locally on your machine.",
+      "createdBy": "Created by",
+      "buyCoffee": "Buy me a coffee",
+      "license": "Licensed under <link>MIT</link>"
+    }
+  },
+  "models": {
+    "title": "Models",
+    "subtitle": "Download and manage AI models for voice generation and transcription",
+    "defaultName": "Model",
+    "unknownSize": "Unknown size",
+    "sections": {
+      "voiceGeneration": "Voice Generation",
+      "transcription": "Transcription"
+    },
+    "status": {
+      "loaded": "Loaded"
+    },
+    "storage": {
+      "location": "Storage location",
+      "open": "Open",
+      "change": "Change",
+      "migrating": "Migrating…",
+      "reset": "Reset",
+      "pickerTitle": "Choose model storage folder"
+    },
+    "progress": {
+      "connecting": "Connecting…",
+      "connectingHf": "Connecting to HuggingFace…"
+    },
+    "problems": {
+      "title": "Problems",
+      "clearAll": "Clear All",
+      "noDetails": "No error details available. Try downloading again.",
+      "startedAt": "started at {{time}}"
+    },
+    "detail": {
+      "loadingInfo": "Loading model info…",
+      "byAuthor": "by {{author}}",
+      "downloads": "Downloads",
+      "likes": "Likes",
+      "license": "License",
+      "languagesCount": "{{count}} languages supported",
+      "languagesList": "Languages: {{list}}",
+      "onDisk": "{{size}} on disk"
+    },
+    "actions": {
+      "download": "Download",
+      "retry": "Retry Download",
+      "unload": "Unload",
+      "unloading": "Unloading…",
+      "unloadFirst": "Unload model before deleting",
+      "deleteModel": "Delete Model"
+    },
+    "deleteDialog": {
+      "title": "Delete Model",
+      "body": "Are you sure you want to delete <strong>{{name}}</strong>?",
+      "sizeNote": "This will free up {{size}} of disk space. The model will need to be re-downloaded if you want to use it again.",
+      "deleting": "Deleting…"
+    },
+    "migrateDialog": {
+      "title": "Move models to new location?",
+      "description": "The server will shut down while models are being moved to the new folder. It will restart automatically once the migration is complete.",
+      "action": "Move Models",
+      "preparing": "Preparing…",
+      "restartingServer": "Restarting server…"
+    },
+    "migrate": {
+      "title": "Moving models",
+      "offline": "The server is offline while models are being moved."
+    },
+    "toast": {
+      "downloadFailed": "Download failed",
+      "cancelFailed": "Cancel failed",
+      "cancelFailedDescription": "Could not cancel the download task.",
+      "deleted": "Model deleted",
+      "deletedDescription": "{{name}} has been deleted successfully.",
+      "deleteFailed": "Delete failed",
+      "unloaded": "Model unloaded",
+      "unloadedDescription": "{{name}} has been unloaded from memory.",
+      "unloadFailed": "Unload failed",
+      "openFolderFailed": "Failed to open model folder",
+      "pickerFailed": "Failed to open folder picker",
+      "resetToDefault": "Reset to default location. Restarting server…",
+      "noModelsToMigrate": "No models to migrate",
+      "noModelsToMigrateDescription": "Download at least one model before changing the storage location.",
+      "migrated": "Models moved successfully",
+      "migrationFailed": "Migration failed",
+      "migrationFailedGeneric": "Failed to migrate models",
+      "migrationConnectionLost": "Lost connection during migration"
+    }
+  }
+}

app/src/i18n/locales/ja/translation.json

@@ -0,0 +1,834 @@
+{
+  "common": {
+    "cancel": "キャンセル",
+    "save": "保存",
+    "delete": "削除",
+    "edit": "編集",
+    "close": "閉じる",
+    "confirm": "確認",
+    "loading": "読み込み中…",
+    "error": "エラー",
+    "unknown": "不明",
+    "unknownError": "不明なエラー"
+  },
+  "nav": {
+    "generate": "生成",
+    "stories": "ストーリー",
+    "voices": "ボイス",
+    "effects": "エフェクト",
+    "audio": "オーディオ",
+    "models": "モデル",
+    "settings": "設定",
+    "updateBadge": "更新"
+  },
+  "voicesTab": {
+    "title": "ボイス",
+    "loading": "ボイスを読み込み中…",
+    "searchPlaceholder": "ボイスを検索…",
+    "newVoice": "新しいボイス",
+    "avatarAlt": "{{name}} のアバター",
+    "selectChannels": "チャンネルを選択…",
+    "channelDefaultLabel": "{{name}}(デフォルト)",
+    "columns": {
+      "name": "名前",
+      "language": "言語",
+      "generations": "生成",
+      "samples": "サンプル",
+      "effects": "エフェクト",
+      "channels": "チャンネル"
+    }
+  },
+  "voiceInspector": {
+    "loading": "読み込み中…",
+    "defaultEffectsHint": "このボイスで新しく生成する際に自動的に適用されます。",
+    "fields": {
+      "description": "説明"
+    },
+    "toast": {
+      "invalidImageFormat": "PNG、JPG、または WebP を選択してください",
+      "avatarUpdated": "アバターを更新しました",
+      "savedDescription": "「{{name}}」を保存しました。"
+    }
+  },
+  "audioChannels": {
+    "title": "オーディオチャンネル",
+    "newChannel": "新しいチャンネル",
+    "loading": "読み込み中…",
+    "confirmDelete": "このチャンネルを削除しますか?",
+    "noVoicesAssigned": "割り当てられたボイスはありません",
+    "selectDevice": "デバイスを選択",
+    "addDevice": "デバイスを追加",
+    "addVoice": "ボイスを追加",
+    "defaultSuffix": "デフォルト",
+    "empty": {
+      "message": "オーディオチャンネルがまだありません。最初のチャンネルを作成して、ボイスを特定のデバイスにルーティングしましょう。",
+      "action": "チャンネルを作成"
+    },
+    "labels": {
+      "outputDevices": "出力デバイス",
+      "assignedVoices": "割り当てられたボイス"
+    },
+    "devices": {
+      "title": "利用可能なデバイス",
+      "defaultNote": "デフォルトチャンネルはシステムのデフォルトデバイスを使用します",
+      "toggleHint": "デバイスをクリックして、選択中のチャンネルに追加または削除します",
+      "selectHint": "デバイスを割り当てるチャンネルを選択してください",
+      "empty": "オーディオデバイスが見つかりません",
+      "requiresTauri": "オーディオデバイスの選択には Tauri が必要です"
+    },
+    "fields": {
+      "name": "チャンネル名",
+      "namePlaceholder": "例:仮想ケーブル、放送"
+    },
+    "createDialog": {
+      "title": "オーディオチャンネルを作成",
+      "description": "新しいオーディオチャンネル(バス)を作成して、ボイスを特定の出力デバイスにルーティングします。",
+      "action": "作成"
+    },
+    "editDialog": {
+      "title": "チャンネルを編集",
+      "description": "チャンネルの設定とボイスの割り当てを更新します。"
+    }
+  },
+  "profileForm": {
+    "createTitle": "ボイスを作成",
+    "editTitle": "ボイスを編集",
+    "createDescription": "オーディオサンプルまたはビルトインボイスから新しいボイスプロファイルを作成します。",
+    "editDescription": "ボイスプロファイルの詳細を更新し、サンプルを管理します。",
+    "draftRestored": "下書きを復元しました",
+    "discard": "破棄",
+    "source": {
+      "clone": "オーディオから複製",
+      "builtin": "ビルトインボイス"
+    },
+    "builtin": {
+      "hint": "あらかじめ用意されたボイスを選択してください。オーディオサンプルは不要です。",
+      "badge": "ビルトインボイス",
+      "note": "このプロファイルはビルトインボイスを使用しています。作成後はボイスを変更できません。"
+    },
+    "sampleTabs": {
+      "upload": "アップロード",
+      "record": "録音",
+      "system": "システムオーディオ"
+    },
+    "fields": {
+      "engine": "エンジン",
+      "voice": "ボイス",
+      "name": "名前",
+      "namePlaceholder": "マイボイス",
+      "descriptionLabel": "説明(任意)",
+      "descriptionPlaceholder": "このボイスを説明してください…",
+      "language": "言語",
+      "referenceText": "リファレンステキスト",
+      "referenceTextPlaceholder": "オーディオで話されている正確なテキストを入力してください…",
+      "defaultEngine": "デフォルトエンジン",
+      "noPreference": "指定なし",
+      "defaultEngineHint": "このプロファイルが選ばれたとき、このエンジンを自動で選択します。",
+      "defaultEffects": "デフォルトエフェクト",
+      "defaultEffectsHint": "このボイスで新しく生成するすべてのものに自動適用されるエフェクトです。"
+    },
+    "avatar": {
+      "alt": "アバタープレビュー"
+    },
+    "actions": {
+      "saving": "保存中…",
+      "saveChanges": "変更を保存",
+      "createProfile": "プロファイルを作成"
+    },
+    "validation": {
+      "nameRequired": "名前は必須です",
+      "referenceRequired": "サンプルを追加する際はリファレンステキストが必須です",
+      "sampleRequired": "オーディオサンプルが必要です",
+      "referenceTextRequired": "リファレンステキストは必須です",
+      "audioTooLong": "オーディオが長すぎます({{duration}})。最大時間は {{max}} です。",
+      "audioFailed": "オーディオファイルを検証できませんでした。別のファイルをお試しください。"
+    },
+    "toast": {
+      "recordingComplete": "録音完了",
+      "recordingCompleteDescription": "オーディオを正常に録音しました。",
+      "recordingError": "録音エラー",
+      "systemAudioCaptured": "システムオーディオをキャプチャしました",
+      "systemAudioCapturedDescription": "オーディオを正常にキャプチャしました。",
+      "systemAudioError": "システムオーディオのキャプチャエラー",
+      "transcribeFailed": "文字起こしに失敗しました",
+      "transcribeFailedFallback": "オーディオの文字起こしに失敗しました",
+      "noFile": "ファイルが選択されていません",
+      "noFileDescription": "まずオーディオファイルを選択してください。",
+      "invalidFile": "無効なファイル形式",
+      "invalidImageFormat": "画像ファイル(PNG、JPG、または WebP)を選択してください",
+      "fileTooLarge": "ファイルが大きすぎます",
+      "imageTooLargeDescription": "画像は 5MB 未満である必要があります",
+      "avatarRemoved": "アバターを削除しました",
+      "avatarRemovedDescription": "アバター画像を正常に削除しました。",
+      "avatarRemoveFailed": "アバターの削除に失敗しました",
+      "avatarUploadFailed": "アバターのアップロードに失敗しました",
+      "avatarUploadFailedFallback": "アバターのアップロードに失敗しました",
+      "effectsUpdateFailed": "エフェクトの更新に失敗しました",
+      "effectsUpdateFailedFallback": "エフェクトチェーンの保存に失敗しました",
+      "voiceUpdated": "ボイスを更新しました",
+      "voiceUpdatedDescription": "「{{name}}」を正常に更新しました。",
+      "noVoiceSelected": "ボイスが選択されていません",
+      "noVoiceSelectedDescription": "ビルトインボイスを選択してください。",
+      "profileCreated": "プロファイルを作成しました",
+      "profileCreatedBuiltin": "「{{name}}」をビルトインボイスで作成しました。",
+      "profileCreatedSample": "「{{name}}」をサンプルで作成しました。",
+      "sampleRequired": "オーディオサンプルが必要です",
+      "sampleRequiredDescription": "ボイスプロファイルを作成するには、オーディオサンプルを用意してください。",
+      "referenceTextRequired": "リファレンステキストが必要です",
+      "referenceTextRequiredDescription": "オーディオサンプルのリファレンステキストを入力してください。",
+      "invalidAudio": "無効なオーディオファイル",
+      "invalidAudioDescription": "オーディオの長さは {{duration}} ですが、最大は {{max}} です。",
+      "validationError": "検証エラー",
+      "rollbackFailed": "ロールバックに失敗しました",
+      "rollbackFailedDescription": "サンプルのアップロード失敗後、作成されたプロファイルを削除できませんでした。",
+      "profileRolledBack": "プロファイルはロールバックされました。",
+      "sampleFailed": "サンプルの追加に失敗しました",
+      "sampleFailedDescription": "サンプルの追加に失敗しました。",
+      "sampleFailedRolledBack": "サンプルの追加に失敗しました。プロファイルはロールバックされました。",
+      "saveFailed": "プロファイルの保存に失敗しました"
+    }
+  },
+  "audioSample": {
+    "chooseFile": "ファイルを選択",
+    "uploadHint": "クリックしてファイルを選択するか、ドラッグ&ドロップしてください。最大時間:30 秒。",
+    "fileUploaded": "ファイルをアップロードしました",
+    "fileLabel": "ファイル:{{name}}",
+    "play": "再生",
+    "pause": "一時停止",
+    "transcribe": "文字起こし",
+    "transcribing": "文字起こし中…",
+    "remove": "削除",
+    "startRecording": "録音開始",
+    "recordHint": "クリックして録音を開始します。最大時間:30 秒。",
+    "stopRecording": "録音停止",
+    "remaining": "残り {{time}}",
+    "recordingComplete": "録音完了",
+    "recordAgain": "もう一度録音",
+    "startCapture": "キャプチャ開始",
+    "systemHint": "システムからオーディオをキャプチャします。最大時間:30 秒。",
+    "stopCapture": "キャプチャ停止",
+    "captureComplete": "キャプチャ完了",
+    "captureAgain": "もう一度キャプチャ"
+  },
+  "sampleList": {
+    "loading": "サンプルを読み込み中…",
+    "empty": {
+      "title": "サンプルがまだありません",
+      "hint": "最初のオーディオサンプルを追加して始めましょう"
+    },
+    "editing": "文字起こしを編集中",
+    "placeholder": "リファレンステキストを入力…",
+    "saving": "保存中…",
+    "editTranscription": "文字起こしを編集",
+    "deleteSample": "サンプルを削除",
+    "addSample": "サンプルを追加",
+    "note": "メモ:30 秒のサンプル 1 本が最適です。サンプルを複数追加すると品質が低下することがあります。今後のアップデートで、同じボイスの異なるスタイル向けにサンプルを切り替え可能にし、タグ付けできるようにするかもしれません。",
+    "deleteDialog": {
+      "title": "サンプルを削除",
+      "description": "このオーディオサンプルを本当に削除しますか? この操作は元に戻せません。",
+      "deleting": "削除中…"
+    },
+    "player": {
+      "play": "サンプルを再生",
+      "pause": "サンプルを一時停止",
+      "stop": "停止",
+      "stopAria": "再生を停止",
+      "position": "サンプルの再生位置",
+      "positionValue": "{{current}} / {{total}}"
+    },
+    "toast": {
+      "invalidText": "無効なテキスト",
+      "invalidTextDescription": "リファレンステキストは空にできません。",
+      "updated": "サンプルを更新しました",
+      "updatedDescription": "リファレンステキストを正常に更新しました。",
+      "updateFailed": "更新に失敗しました",
+      "updateFailedFallback": "サンプルの更新に失敗しました"
+    }
+  },
+  "profiles": {
+    "card": {
+      "noDescription": "説明なし",
+      "designed": "designed",
+      "export": "プロファイルをエクスポート",
+      "edit": "プロファイルを編集",
+      "delete": "プロファイルを削除",
+      "selectLabel": "{{name}}、{{language}}。生成のボイスとして選択。",
+      "selectLabelSelected": "{{name}}、{{language}}。生成のボイスとして選択済み。"
+    },
+    "list": {
+      "errorLoading": "プロファイルの読み込みエラー:{{message}}",
+      "empty": "ボイスプロファイルがまだありません。最初のプロファイルを作成して始めましょう。",
+      "createVoice": "ボイスを作成",
+      "unsupportedNote": "現在のモデルでは、対応しているボイスプロファイルのみ選択できます。"
+    },
+    "deleteDialog": {
+      "title": "プロファイルを削除",
+      "body": "「{{name}}」を本当に削除しますか? この操作は元に戻せません。",
+      "deleting": "削除中…"
+    }
+  },
+  "effects": {
+    "title": "エフェクト",
+    "newPreset": "新しいプリセット",
+    "noDescription": "説明なし",
+    "placeholder": "プリセットを選択するか、新しく作成します",
+    "effectCount_one": "エフェクト {{count}} 件",
+    "effectCount_other": "エフェクト {{count}} 件",
+    "sections": {
+      "builtin": "ビルトイン",
+      "custom": "カスタム",
+      "new": "新規"
+    },
+    "badge": {
+      "builtin": "ビルトイン"
+    },
+    "unsaved": {
+      "title": "未保存のプリセット",
+      "hint": "右側のパネルでエフェクトを設定します。"
+    },
+    "detail": {
+      "newTitle": "新しいプリセット",
+      "editTitle": "プリセットを編集",
+      "savePreset": "プリセットを保存",
+      "saveAsCustom": "カスタムとして保存",
+      "saving": "保存中…",
+      "deleting": "削除中…"
+    },
+    "fields": {
+      "name": "名前",
+      "namePlaceholder": "マイプリセット…",
+      "description": "説明",
+      "descriptionPlaceholder": "このプリセットの内容を説明…"
+    },
+    "preview": {
+      "label": "プレビュー",
+      "button": "プレビュー",
+      "processing": "処理中…",
+      "hint": "プレビューでは保存せずにクリーン版へエフェクトを適用します。"
+    },
+    "saveAs": {
+      "title": "カスタムプリセットとして保存",
+      "description": "現在のエフェクトチェーンをもとに新しいカスタムプリセットを作成します。",
+      "suggestedName": "{{name}}(コピー)"
+    },
+    "toast": {
+      "saved": "プリセットを保存しました",
+      "createdDescription": "「{{name}}」を作成しました。",
+      "updated": "プリセットを更新しました",
+      "deleted": "プリセットを削除しました",
+      "saveFailed": "保存に失敗しました",
+      "deleteFailed": "削除に失敗しました",
+      "previewFailed": "プレビューに失敗しました",
+      "nameRequired": "名前が必要です"
+    },
+    "chain": {
+      "loadPreset": "プリセットを読み込む…",
+      "addEffect": "エフェクトを追加…",
+      "clear": "クリア",
+      "enable": "有効化",
+      "disable": "無効化",
+      "remove": "削除"
+    },
+    "types": {
+      "chorus": {
+        "label": "コーラス / フランジャー",
+        "params": {
+          "rate_hz": "LFO 速度(Hz)",
+          "depth": "モジュレーション深度",
+          "feedback": "フィードバック量",
+          "centre_delay_ms": "センターディレイ(ms)",
+          "mix": "ウェット/ドライミックス"
+        }
+      },
+      "reverb": {
+        "label": "リバーブ",
+        "params": {
+          "room_size": "ルームサイズ",
+          "damping": "高域ダンピング",
+          "wet_level": "ウェットレベル",
+          "dry_level": "ドライレベル",
+          "width": "ステレオ幅"
+        }
+      },
+      "delay": {
+        "label": "ディレイ",
+        "params": {
+          "delay_seconds": "ディレイタイム(秒)",
+          "feedback": "フィードバック量",
+          "mix": "ウェット/ドライミックス"
+        }
+      },
+      "compressor": {
+        "label": "コンプレッサー",
+        "params": {
+          "threshold_db": "スレッショルド(dB)",
+          "ratio": "コンプレッションレシオ",
+          "attack_ms": "アタックタイム(ms)",
+          "release_ms": "リリースタイム(ms)"
+        }
+      },
+      "gain": {
+        "label": "ゲイン",
+        "params": {
+          "gain_db": "ゲイン(dB)"
+        }
+      },
+      "highpass": {
+        "label": "ハイパスフィルター",
+        "params": {
+          "cutoff_frequency_hz": "カットオフ周波数(Hz)"
+        }
+      },
+      "lowpass": {
+        "label": "ローパスフィルター",
+        "params": {
+          "cutoff_frequency_hz": "カットオフ周波数(Hz)"
+        }
+      },
+      "pitch_shift": {
+        "label": "ピッチシフト",
+        "params": {
+          "semitones": "シフトする半音数"
+        }
+      }
+    },
+    "builtinPresets": {
+      "Robotic": {
+        "name": "ロボット",
+        "description": "メタリックなロボット音声(遅い LFO と高フィードバックのフランジャー)"
+      },
+      "Radio": {
+        "name": "ラジオ",
+        "description": "バンドパスフィルタリングと軽いコンプレッションによる AM ラジオ風の細い音声"
+      },
+      "Echo Chamber": {
+        "name": "エコーチェンバー",
+        "description": "広がりのあるリバーブと尾を引くエコー"
+      },
+      "Deep Voice": {
+        "name": "ディープボイス",
+        "description": "低いピッチに暖かみを加えた音声"
+      }
+    }
+  },
+  "stories": {
+    "title": "ストーリー",
+    "newStory": "新しいストーリー",
+    "loading": "ストーリーを読み込み中…",
+    "empty": {
+      "title": "ストーリーがまだありません",
+      "hint": "最初のストーリーを作成して始めましょう"
+    },
+    "row": {
+      "itemCount_one": "{{count}} 項目",
+      "itemCount_other": "{{count}} 項目",
+      "ariaLabel": "ストーリー {{name}}、{{count}} 項目、{{updated}}",
+      "actionsLabel": "{{name}} の操作"
+    },
+    "createDialog": {
+      "title": "新しいストーリーを作成",
+      "description": "新しいストーリーを作成して、ボイス生成を会話としてまとめます。",
+      "action": "作成",
+      "creating": "作成中…"
+    },
+    "editDialog": {
+      "title": "ストーリーを編集",
+      "description": "ストーリーの名前と説明を更新します。",
+      "saving": "保存中…"
+    },
+    "deleteDialog": {
+      "title": "本当に削除しますか?",
+      "description": "このストーリーとすべての項目が完全に削除されます。この操作は元に戻せません。",
+      "deleting": "削除中…"
+    },
+    "fields": {
+      "name": "名前",
+      "namePlaceholder": "マイストーリー",
+      "descriptionLabel": "説明(任意)",
+      "descriptionPlaceholder": "例:○○と△△の会話…"
+    },
+    "toast": {
+      "nameRequired": "名前が必要です",
+      "nameRequiredDescription": "ストーリー名を入力してください",
+      "created": "ストーリーを作成しました",
+      "createdDescription": "「{{name}}」を作成しました",
+      "createFailed": "ストーリーの作成に失敗しました",
+      "updateFailed": "ストーリーの更新に失敗しました",
+      "deleteFailed": "ストーリーの削除に失敗しました"
+    }
+  },
+  "storyContent": {
+    "selectStory": {
+      "title": "ストーリーを選択",
+      "hint": "リストからストーリーを選んで内容を表示します"
+    },
+    "loading": "ストーリーを読み込み中…",
+    "notFound": {
+      "title": "ストーリーが見つかりません",
+      "hint": "選択したストーリーを読み込めませんでした"
+    },
+    "generatingCount_one": "オーディオ {{count}} 件を生成中",
+    "generatingCount_other": "オーディオ {{count}} 件を生成中",
+    "add": "追加",
+    "searchPlaceholder": "名前または文字起こしで検索…",
+    "searchNoMatches": "一致する生成が見つかりません",
+    "searchNoAvailable": "利用可能な生成がありません",
+    "exportAudio": "オーディオをエクスポート",
+    "empty": {
+      "title": "このストーリーには項目がありません",
+      "hint": "下のボックスで音声を生成して項目を追加します"
+    },
+    "itemActions": {
+      "playFromHere": "ここから再生",
+      "removeFromStory": "ストーリーから削除"
+    },
+    "toast": {
+      "removeFailed": "項目の削除に失敗しました",
+      "reorderFailed": "項目の並び替えに失敗しました",
+      "exportFailed": "オーディオのエクスポートに失敗しました",
+      "addFailed": "生成の追加に失敗しました"
+    }
+  },
+  "history": {
+    "actions": {
+      "menu": "操作",
+      "play": "再生",
+      "exportAudio": "オーディオをエクスポート",
+      "exportPackage": "パッケージをエクスポート",
+      "applyEffects": "エフェクトを適用",
+      "regenerate": "再生成"
+    },
+    "deleteDialog": {
+      "title": "生成を削除",
+      "body": "「{{name}}」のこの生成を本当に削除しますか? この操作は元に戻せません。",
+      "deleting": "削除中…"
+    },
+    "clearFailedDialog": {
+      "title": "失敗した生成をクリア",
+      "body_one": "失敗した生成 {{count}} 件を履歴から完全に削除します。この操作は元に戻せません。",
+      "body_other": "失敗した生成 {{count}} 件を履歴から完全に削除します。この操作は元に戻せません。",
+      "clearing": "クリア中…",
+      "clearAll": "すべてクリア"
+    },
+    "importDialog": {
+      "title": "生成をインポート",
+      "body": "「{{name}}」から生成をインポートします。履歴に追加されます。",
+      "importing": "インポート中…",
+      "action": "インポート"
+    },
+    "effectsDialog": {
+      "title": "エフェクトを適用",
+      "body": "この生成に適用するポストプロセッシングのエフェクトを設定します。新しいバージョンが作成されます。",
+      "sourceLabel": "ソース",
+      "sourcePlaceholder": "ソースバージョンを選択",
+      "apply": "適用",
+      "applying": "適用中…"
+    }
+  },
+  "generation": {
+    "placeholder": {
+      "storyWithEffects": "「{{name}}」用の音声を生成…(エフェクトは / を入力)",
+      "story": "「{{name}}」用の音声を生成…",
+      "profile": "{{name}} を使って音声を生成…",
+      "effectsHint": "/ を入力して [laugh]、[sigh] などのエフェクトを使う",
+      "selectVoice": "上でボイスプロファイルを選択してください…"
+    },
+    "button": {
+      "generate": "音声を生成",
+      "generating": "生成中…",
+      "selectFirst": "まずボイスプロファイルを選択してください"
+    },
+    "instruct": {
+      "show": "デリバリー指示を表示",
+      "hide": "デリバリー指示を非表示",
+      "tooltip": "デリバリー指示(トーン、感情、ペース)",
+      "placeholder": "デリバリー指示 — 例:暖かくゆっくり話す、はっきりと威厳をもって…"
+    },
+    "voiceSelector": {
+      "placeholder": "ボイスを選択…"
+    },
+    "effects": {
+      "none": "エフェクトなし",
+      "profileDefault": "プロファイルのデフォルト"
+    }
+  },
+  "main": {
+    "importVoice": "ボイスをインポート",
+    "createVoice": "ボイスを作成",
+    "import": {
+      "invalidTitle": "無効なファイル形式",
+      "invalidDescription": "有効な .voicebox.zip ファイルを選択してください",
+      "successTitle": "プロファイルをインポートしました",
+      "successDescription": "ボイスプロファイルを正常にインポートしました",
+      "failedTitle": "プロファイルのインポートに失敗しました",
+      "dialogTitle": "プロファイルをインポート",
+      "dialogDescription": "「{{name}}」からプロファイルをインポートします。すべてのサンプルを含む新しいプロファイルが作成されます。",
+      "importing": "インポート中…",
+      "action": "インポート"
+    }
+  },
+  "settings": {
+    "tabs": {
+      "general": "一般",
+      "generation": "生成",
+      "gpu": "GPU",
+      "logs": "ログ",
+      "changelog": "変更履歴",
+      "about": "このアプリについて"
+    },
+    "language": {
+      "label": "言語",
+      "description": "Voicebox の表示言語を選択します。"
+    },
+    "general": {
+      "docs": { "title": "ドキュメントを読む" },
+      "discord": { "title": "Discord に参加", "subtitle": "ヘルプやボイスの共有" },
+      "serverUrl": {
+        "title": "サーバー URL",
+        "description": "Voicebox バックエンドサーバーのアドレス。",
+        "invalidUrl": "有効な URL を入力してください",
+        "updatedTitle": "サーバー URL を更新しました",
+        "updatedDescription": "{{url}} に接続しました"
+      },
+      "keepServerRunning": {
+        "title": "アプリ終了後もサーバーを起動したままにする",
+        "description": "アプリを閉じた後もサーバーがバックグラウンドで動作し続けます。",
+        "failedTitle": "設定の更新に失敗しました",
+        "failedDescription": "バックエンドに設定を同期できませんでした。",
+        "updatedTitle": "設定を更新しました",
+        "runningDescription": "アプリ終了後もサーバーは動作し続けます",
+        "stoppedDescription": "アプリ終了時にサーバーは停止します"
+      },
+      "networkAccess": {
+        "title": "ネットワークアクセスを許可",
+        "description": "ネットワーク上の他のデバイスからサーバーにアクセスできるようにします。変更後はアプリを再起動してください。",
+        "updatedTitle": "設定を更新しました",
+        "enabled": "ネットワークアクセスが有効になりました。適用するにはアプリを再起動してください。",
+        "disabled": "ネットワークアクセスが無効になりました。適用するにはアプリを再起動してください。"
+      },
+      "connection": {
+        "connecting": "接続中",
+        "offline": "オフライン",
+        "online": "オンライン"
+      },
+      "updates": {
+        "title": "アプリの更新",
+        "devSuffix": " (開発版)",
+        "devMode": {
+          "title": "開発モード",
+          "description": "開発モードでは自動更新が無効になっています。"
+        },
+        "check": {
+          "title": "更新を確認",
+          "available": "バージョン {{version}} が利用可能",
+          "checking": "確認中…",
+          "upToDate": "最新の状態です",
+          "button": "確認"
+        },
+        "error": "更新エラー",
+        "download": {
+          "title": "バージョン {{version}} に更新",
+          "description": "最新バージョンをダウンロードしてインストールします。",
+          "button": "ダウンロード"
+        },
+        "downloading": "更新をダウンロード中…",
+        "ready": {
+          "title": "更新をインストールする準備ができました",
+          "description": "バージョン {{version}} をダウンロードしました。再起動して完了します。",
+          "button": "今すぐ再起動"
+        }
+      },
+      "api": {
+        "title": "API アクセス",
+        "description": "<code>{{url}}</code> の REST API を通じて Voicebox をワークフローに統合できます",
+        "viewReference": "API リファレンス全文を表示",
+        "endpoints": {
+          "generate": "音声を生成",
+          "health": "サーバーステータス",
+          "profiles": "ボイス一覧",
+          "history": "過去の生成"
+        }
+      }
+    },
+    "generation": {
+      "title": "生成",
+      "description": "長文生成の制御。これらの設定はすべてのエンジンに適用されます。",
+      "chunkLimit": {
+        "title": "自動チャンク分割の上限",
+        "description": "長文は文境界でチャンクに分割されます。値を小さくすると長い出力の品質が向上することがあります。",
+        "value": "{{chars}} 文字"
+      },
+      "crossfade": {
+        "title": "チャンク間のクロスフェード",
+        "description": "チャンク間のオーディオをブレンドして遷移を滑らかにします。0 にするとハードカットになります。",
+        "cut": "カット",
+        "ms": "{{ms}}ms"
+      },
+      "normalize": {
+        "title": "オーディオを正規化",
+        "description": "生成間で一貫した音量になるよう出力を調整します。"
+      },
+      "autoplay": {
+        "title": "生成時に自動再生",
+        "description": "生成が完了したら自動的にオーディオを再生します。"
+      },
+      "folder": {
+        "title": "生成物の保存先フォルダ",
+        "description": "生成されたオーディオファイルをディスク上に保存する場所。",
+        "open": "開く"
+      }
+    },
+    "gpu": {
+      "cpuOnly": "CPU のみ",
+      "vramUsed": "VRAM 使用量 {{mb}} MB",
+      "noAcceleration": "GPU アクセラレーションは検出されていません",
+      "active": "有効",
+      "cuda": {
+        "title": "CUDA バックエンド",
+        "description": "ダウンロード可能な CUDA バックエンドによる NVIDIA GPU アクセラレーション。",
+        "downloading": "CUDA バックエンドをダウンロード中…",
+        "downloadingShort": "ダウンロード中…",
+        "updating": "更新中…"
+      },
+      "restart": {
+        "ready": "サーバーを正常に再起動しました",
+        "waiting": "サーバーを再起動中…",
+        "stopping": "サーバーを停止中…"
+      },
+      "download": {
+        "title": "CUDA バックエンドをダウンロード",
+        "description": "約 2.4 GB のダウンロード。CUDA 対応の NVIDIA GPU が必要です。",
+        "button": "ダウンロード"
+      },
+      "switchToCuda": {
+        "title": "CUDA バックエンドに切り替え",
+        "description": "CUDA バックエンドはダウンロード済みです。再起動して有効にします。",
+        "button": "再起動"
+      },
+      "switchToCpu": {
+        "title": "CPU バックエンドに切り替え",
+        "description": "GPU アクセラレーションを無効にします。CUDA は後で再ダウンロードできます。",
+        "button": "切り替え"
+      },
+      "remove": {
+        "title": "CUDA バックエンドを削除",
+        "description": "ダウンロードした CUDA バイナリを削除してディスク容量を空けます。",
+        "button": "削除"
+      },
+      "errors": {
+        "downloadFailed": "ダウンロードに失敗しました",
+        "downloadStart": "ダウンロードを開始できませんでした",
+        "restartFailed": "再起動に失敗しました",
+        "switchCpu": "CPU への切り替えに失敗しました",
+        "deleteCuda": "CUDA バックエンドの削除に失敗しました"
+      },
+      "footer": "Voicebox はシステムで利用可能な最適な GPU を自動で検出し使用します。Apple Silicon Mac では、MLX バックエンドが Metal Performance Shaders(MPS)を介して Neural Engine と GPU 上でネイティブに動作し、追加のセットアップは不要です。NVIDIA GPU 搭載の Windows および Linux では、オプションの CUDA バックエンドをダウンロードしてハードウェアアクセラレーションによる推論が可能です。AMD ROCm、Intel XPU、DirectML も PyTorch を通じて利用可能な環境でサポートされます。GPU が検出されない場合、Voicebox は CPU にフォールバックし、すべてのエンジンはそのまま動作しますが速度は低下します。"
+    },
+    "logs": {
+      "title": "サーバーログ",
+      "lineCount_one": "{{count}} 行",
+      "lineCount_other": "{{count}} 行",
+      "scrollToBottom": "一番下までスクロール",
+      "clear": "クリア",
+      "empty": "まだログ出力はありません。",
+      "devHint": "サーバーログはアプリがサーバープロセスを管理している場合(本番ビルド)にのみ記録されます。"
+    },
+    "changelog": {
+      "devBadge": "開発版",
+      "showLess": "折りたたむ",
+      "showMore": "もっと見る"
+    },
+    "about": {
+      "tagline": "オープンソースの音声合成スタジオ。ボイスのクローン、音声生成、エフェクトの適用、音声対応アプリの構築まで、すべてローカル環境で実行できます。",
+      "createdBy": "作者",
+      "buyCoffee": "コーヒーをおごる",
+      "license": "<link>MIT</link> ライセンス"
+    }
+  },
+  "models": {
+    "title": "モデル",
+    "subtitle": "音声生成および文字起こし用の AI モデルをダウンロードして管理します",
+    "defaultName": "モデル",
+    "unknownSize": "サイズ不明",
+    "sections": {
+      "voiceGeneration": "音声生成",
+      "transcription": "文字起こし"
+    },
+    "status": {
+      "loaded": "読み込み済み"
+    },
+    "storage": {
+      "location": "保存場所",
+      "open": "開く",
+      "change": "変更",
+      "migrating": "移行中…",
+      "reset": "リセット",
+      "pickerTitle": "モデル保存フォルダを選択"
+    },
+    "progress": {
+      "connecting": "接続中…",
+      "connectingHf": "HuggingFace に接続中…"
+    },
+    "problems": {
+      "title": "問題",
+      "clearAll": "すべてクリア",
+      "noDetails": "エラーの詳細はありません。もう一度ダウンロードしてください。",
+      "startedAt": "{{time}} に開始"
+    },
+    "detail": {
+      "loadingInfo": "モデル情報を読み込み中…",
+      "byAuthor": "{{author}} 作",
+      "downloads": "ダウンロード数",
+      "likes": "いいね",
+      "license": "ライセンス",
+      "languagesCount": "{{count}} 言語に対応",
+      "languagesList": "対応言語:{{list}}",
+      "onDisk": "ディスク使用量 {{size}}"
+    },
+    "actions": {
+      "download": "ダウンロード",
+      "retry": "ダウンロードを再試行",
+      "unload": "アンロード",
+      "unloading": "アンロード中…",
+      "unloadFirst": "削除する前にモデルをアンロードしてください",
+      "deleteModel": "モデルを削除"
+    },
+    "deleteDialog": {
+      "title": "モデルを削除",
+      "body": "<strong>{{name}}</strong> を本当に削除しますか?",
+      "sizeNote": "これにより {{size}} のディスク容量が解放されます。再度使用する場合は再ダウンロードが必要です。",
+      "deleting": "削除中…"
+    },
+    "migrateDialog": {
+      "title": "モデルを新しい場所に移動しますか?",
+      "description": "モデルを新しいフォルダに移動する間、サーバーは停止します。移行が完了すると自動的に再起動します。",
+      "action": "モデルを移動",
+      "preparing": "準備中…",
+      "restartingServer": "サーバーを再起動中…"
+    },
+    "migrate": {
+      "title": "モデルを移動中",
+      "offline": "モデルの移動中はサーバーがオフラインになります。"
+    },
+    "toast": {
+      "downloadFailed": "ダウンロードに失敗しました",
+      "cancelFailed": "キャンセルに失敗しました",
+      "cancelFailedDescription": "ダウンロードタスクをキャンセルできませんでした。",
+      "deleted": "モデルを削除しました",
+      "deletedDescription": "{{name}} を正常に削除しました。",
+      "deleteFailed": "削除に失敗しました",
+      "unloaded": "モデルをアンロードしました",
+      "unloadedDescription": "{{name}} をメモリからアンロードしました。",
+      "unloadFailed": "アンロードに失敗しました",
+      "openFolderFailed": "モデルフォルダを開けませんでした",
+      "pickerFailed": "フォルダ選択ダイアログを開けませんでした",
+      "resetToDefault": "デフォルトの場所にリセットしました。サーバーを再起動中…",
+      "noModelsToMigrate": "移行するモデルがありません",
+      "noModelsToMigrateDescription": "保存場所を変更する前に、少なくとも 1 つのモデルをダウンロードしてください。",
+      "migrated": "モデルを正常に移動しました",
+      "migrationFailed": "移行に失敗しました",
+      "migrationFailedGeneric": "モデルの移行に失敗しました",
+      "migrationConnectionLost": "移行中に接続が切断されました"
+    }
+  }
+}

app/src/i18n/locales/zh-CN/translation.json

@@ -0,0 +1,834 @@
+{
+  "common": {
+    "cancel": "取消",
+    "save": "保存",
+    "delete": "删除",
+    "edit": "编辑",
+    "close": "关闭",
+    "confirm": "确认",
+    "loading": "加载中…",
+    "error": "错误",
+    "unknown": "未知",
+    "unknownError": "未知错误"
+  },
+  "nav": {
+    "generate": "生成",
+    "stories": "故事",
+    "voices": "声音",
+    "effects": "效果",
+    "audio": "音频",
+    "models": "模型",
+    "settings": "设置",
+    "updateBadge": "更新"
+  },
+  "voicesTab": {
+    "title": "声音",
+    "loading": "加载声音中…",
+    "searchPlaceholder": "搜索声音……",
+    "newVoice": "新建声音",
+    "avatarAlt": "{{name}} 的头像",
+    "selectChannels": "选择通道……",
+    "channelDefaultLabel": "{{name}}(默认)",
+    "columns": {
+      "name": "名称",
+      "language": "语言",
+      "generations": "生成次数",
+      "samples": "样本",
+      "effects": "效果",
+      "channels": "通道"
+    }
+  },
+  "voiceInspector": {
+    "loading": "加载中…",
+    "defaultEffectsHint": "自动应用于使用此声音的新生成。",
+    "fields": {
+      "description": "描述"
+    },
+    "toast": {
+      "invalidImageFormat": "请选择 PNG、JPG 或 WebP 格式",
+      "avatarUpdated": "头像已更新",
+      "savedDescription": "\"{{name}}\" 已保存。"
+    }
+  },
+  "audioChannels": {
+    "title": "音频通道",
+    "newChannel": "新建通道",
+    "loading": "加载中…",
+    "confirmDelete": "删除此通道?",
+    "noVoicesAssigned": "未分配声音",
+    "selectDevice": "选择设备",
+    "addDevice": "添加设备",
+    "addVoice": "添加声音",
+    "defaultSuffix": "默认",
+    "empty": {
+      "message": "暂无音频通道。创建您的第一个通道,将声音路由到特定设备。",
+      "action": "创建通道"
+    },
+    "labels": {
+      "outputDevices": "输出设备",
+      "assignedVoices": "已分配声音"
+    },
+    "devices": {
+      "title": "可用设备",
+      "defaultNote": "默认通道使用系统默认设备",
+      "toggleHint": "点击设备以将其添加到或从选定通道中移除",
+      "selectHint": "选择通道以分配设备",
+      "empty": "未找到音频设备",
+      "requiresTauri": "音频设备选择需要 Tauri"
+    },
+    "fields": {
+      "name": "通道名称",
+      "namePlaceholder": "例如:虚拟线缆、广播"
+    },
+    "createDialog": {
+      "title": "创建音频通道",
+      "description": "创建新的音频通道(总线),将声音路由到特定的输出设备。",
+      "action": "创建"
+    },
+    "editDialog": {
+      "title": "编辑通道",
+      "description": "更新通道设置和声音分配。"
+    }
+  },
+  "profileForm": {
+    "createTitle": "创建声音",
+    "editTitle": "编辑声音",
+    "createDescription": "从音频样本或内置声音创建新的声音档案。",
+    "editDescription": "更新您的声音档案详情并管理样本。",
+    "draftRestored": "已恢复草稿",
+    "discard": "丢弃",
+    "source": {
+      "clone": "从音频克隆",
+      "builtin": "内置声音"
+    },
+    "builtin": {
+      "hint": "选择一个预建的声音。这些不需要音频样本。",
+      "badge": "内置声音",
+      "note": "此档案使用内置声音。创建后声音无法更改。"
+    },
+    "sampleTabs": {
+      "upload": "上传",
+      "record": "录制",
+      "system": "系统音频"
+    },
+    "fields": {
+      "engine": "引擎",
+      "voice": "声音",
+      "name": "名称",
+      "namePlaceholder": "我的声音",
+      "descriptionLabel": "描述(可选)",
+      "descriptionPlaceholder": "描述此声音……",
+      "language": "语言",
+      "referenceText": "参考文本",
+      "referenceTextPlaceholder": "输入音频中所说的准确文字……",
+      "defaultEngine": "默认引擎",
+      "noPreference": "无偏好",
+      "defaultEngineHint": "选择该档案时自动使用此引擎。",
+      "defaultEffects": "默认效果",
+      "defaultEffectsHint": "自动应用于使用此声音的所有新生成的效果。"
+    },
+    "avatar": {
+      "alt": "头像预览"
+    },
+    "actions": {
+      "saving": "保存中…",
+      "saveChanges": "保存更改",
+      "createProfile": "创建档案"
+    },
+    "validation": {
+      "nameRequired": "请输入名称",
+      "referenceRequired": "添加样本时需要参考文本",
+      "sampleRequired": "需要音频样本",
+      "referenceTextRequired": "需要参考文本",
+      "audioTooLong": "音频过长({{duration}})。最大时长为 {{max}}。",
+      "audioFailed": "音频文件验证失败。请尝试其他文件。"
+    },
+    "toast": {
+      "recordingComplete": "录制完成",
+      "recordingCompleteDescription": "音频已成功录制。",
+      "recordingError": "录制错误",
+      "systemAudioCaptured": "系统音频已捕获",
+      "systemAudioCapturedDescription": "音频已成功捕获。",
+      "systemAudioError": "系统音频捕获错误",
+      "transcribeFailed": "转录失败",
+      "transcribeFailedFallback": "无法转录音频",
+      "noFile": "未选择文件",
+      "noFileDescription": "请先选择一个音频文件。",
+      "invalidFile": "文件类型无效",
+      "invalidImageFormat": "请选择图片文件(PNG、JPG 或 WebP)",
+      "fileTooLarge": "文件过大",
+      "imageTooLargeDescription": "图片必须小于 5MB",
+      "avatarRemoved": "头像已移除",
+      "avatarRemovedDescription": "头像图片已成功移除。",
+      "avatarRemoveFailed": "移除头像失败",
+      "avatarUploadFailed": "头像上传失败",
+      "avatarUploadFailedFallback": "无法上传头像",
+      "effectsUpdateFailed": "效果更新失败",
+      "effectsUpdateFailedFallback": "无法保存效果链",
+      "voiceUpdated": "声音已更新",
+      "voiceUpdatedDescription": "\"{{name}}\" 已成功更新。",
+      "noVoiceSelected": "未选择声音",
+      "noVoiceSelectedDescription": "请选择内置声音。",
+      "profileCreated": "档案已创建",
+      "profileCreatedBuiltin": "\"{{name}}\" 已使用内置声音创建。",
+      "profileCreatedSample": "\"{{name}}\" 已使用样本创建。",
+      "sampleRequired": "需要音频样本",
+      "sampleRequiredDescription": "请提供音频样本以创建声音档案。",
+      "referenceTextRequired": "需要参考文本",
+      "referenceTextRequiredDescription": "请提供音频样本的参考文本。",
+      "invalidAudio": "音频文件无效",
+      "invalidAudioDescription": "音频时长为 {{duration}},但最大为 {{max}}。",
+      "validationError": "验证错误",
+      "rollbackFailed": "回滚失败",
+      "rollbackFailedDescription": "样本上传失败后无法移除已创建的档案。",
+      "profileRolledBack": "档案已回滚。",
+      "sampleFailed": "添加样本失败",
+      "sampleFailedDescription": "添加样本失败。",
+      "sampleFailedRolledBack": "添加样本失败。档案已回滚。",
+      "saveFailed": "保存档案失败"
+    }
+  },
+  "audioSample": {
+    "chooseFile": "选择文件",
+    "uploadHint": "点击选择文件或拖放。最大时长:30 秒。",
+    "fileUploaded": "文件已上传",
+    "fileLabel": "文件:{{name}}",
+    "play": "播放",
+    "pause": "暂停",
+    "transcribe": "转录",
+    "transcribing": "转录中…",
+    "remove": "移除",
+    "startRecording": "开始录制",
+    "recordHint": "点击开始录制。最大时长:30 秒。",
+    "stopRecording": "停止录制",
+    "remaining": "剩余 {{time}}",
+    "recordingComplete": "录制完成",
+    "recordAgain": "重新录制",
+    "startCapture": "开始捕获",
+    "systemHint": "从您的系统捕获音频。最大时长:30 秒。",
+    "stopCapture": "停止捕获",
+    "captureComplete": "捕获完成",
+    "captureAgain": "重新捕获"
+  },
+  "sampleList": {
+    "loading": "加载样本中…",
+    "empty": {
+      "title": "暂无样本",
+      "hint": "添加第一个音频样本以开始"
+    },
+    "editing": "正在编辑转录",
+    "placeholder": "输入参考文本……",
+    "saving": "保存中…",
+    "editTranscription": "编辑转录",
+    "deleteSample": "删除样本",
+    "addSample": "添加样本",
+    "note": "注意:单个 30 秒的样本效果最佳。多个样本可能会降低质量。未来版本中样本可能会变得可互换,并为同一声音的不同风格打标签。",
+    "deleteDialog": {
+      "title": "删除样本",
+      "description": "确定要删除此音频样本吗?此操作不可撤销。",
+      "deleting": "删除中…"
+    },
+    "player": {
+      "play": "播放样本",
+      "pause": "暂停样本",
+      "stop": "停止",
+      "stopAria": "停止播放",
+      "position": "样本播放位置",
+      "positionValue": "{{current}} / {{total}}"
+    },
+    "toast": {
+      "invalidText": "文本无效",
+      "invalidTextDescription": "参考文本不能为空。",
+      "updated": "样本已更新",
+      "updatedDescription": "参考文本已成功更新。",
+      "updateFailed": "更新失败",
+      "updateFailedFallback": "更新样本失败"
+    }
+  },
+  "profiles": {
+    "card": {
+      "noDescription": "无描述",
+      "designed": "设计",
+      "export": "导出声音档案",
+      "edit": "编辑声音档案",
+      "delete": "删除声音档案",
+      "selectLabel": "{{name}},{{language}}。选择用于生成的声音。",
+      "selectLabelSelected": "{{name}},{{language}}。已选为用于生成的声音。"
+    },
+    "list": {
+      "errorLoading": "加载声音档案时出错:{{message}}",
+      "empty": "还没有声音档案。创建您的第一个档案以开始使用。",
+      "createVoice": "创建声音",
+      "unsupportedNote": "当前模型仅可选择支持的声音档案。"
+    },
+    "deleteDialog": {
+      "title": "删除声音档案",
+      "body": "确定要删除 \"{{name}}\" 吗?此操作不可撤销。",
+      "deleting": "删除中…"
+    }
+  },
+  "effects": {
+    "title": "效果",
+    "newPreset": "新建预设",
+    "noDescription": "无描述",
+    "placeholder": "选择一个预设或创建新的",
+    "effectCount_one": "{{count}} 个效果",
+    "effectCount_other": "{{count}} 个效果",
+    "sections": {
+      "builtin": "内置",
+      "custom": "自定义",
+      "new": "新建"
+    },
+    "badge": {
+      "builtin": "内置"
+    },
+    "unsaved": {
+      "title": "未保存的预设",
+      "hint": "在右侧面板配置效果。"
+    },
+    "detail": {
+      "newTitle": "新建预设",
+      "editTitle": "编辑预设",
+      "savePreset": "保存预设",
+      "saveAsCustom": "另存为自定义",
+      "saving": "保存中…",
+      "deleting": "删除中…"
+    },
+    "fields": {
+      "name": "名称",
+      "namePlaceholder": "我的预设……",
+      "description": "描述",
+      "descriptionPlaceholder": "描述此预设的作用……"
+    },
+    "preview": {
+      "label": "预览",
+      "button": "预览",
+      "processing": "处理中…",
+      "hint": "预览仅将效果应用于干净版本,不会保存。"
+    },
+    "saveAs": {
+      "title": "另存为自定义预设",
+      "description": "基于当前效果链创建一个新的自定义预设。",
+      "suggestedName": "{{name}}(副本)"
+    },
+    "toast": {
+      "saved": "预设已保存",
+      "createdDescription": "\"{{name}}\" 已创建。",
+      "updated": "预设已更新",
+      "deleted": "预设已删除",
+      "saveFailed": "保存失败",
+      "deleteFailed": "删除失败",
+      "previewFailed": "预览失败",
+      "nameRequired": "请输入名称"
+    },
+    "chain": {
+      "loadPreset": "加载预设……",
+      "addEffect": "添加效果……",
+      "clear": "清空",
+      "enable": "启用",
+      "disable": "禁用",
+      "remove": "移除"
+    },
+    "types": {
+      "chorus": {
+        "label": "合唱 / 镶边",
+        "params": {
+          "rate_hz": "LFO 速度(Hz)",
+          "depth": "调制深度",
+          "feedback": "反馈量",
+          "centre_delay_ms": "中心延迟(毫秒)",
+          "mix": "干湿混合"
+        }
+      },
+      "reverb": {
+        "label": "混响",
+        "params": {
+          "room_size": "房间大小",
+          "damping": "高频阻尼",
+          "wet_level": "湿声电平",
+          "dry_level": "干声电平",
+          "width": "立体声宽度"
+        }
+      },
+      "delay": {
+        "label": "延迟",
+        "params": {
+          "delay_seconds": "延迟时间(秒)",
+          "feedback": "反馈量",
+          "mix": "干湿混合"
+        }
+      },
+      "compressor": {
+        "label": "压缩器",
+        "params": {
+          "threshold_db": "阈值(dB)",
+          "ratio": "压缩比",
+          "attack_ms": "起音时间(毫秒)",
+          "release_ms": "释放时间(毫秒)"
+        }
+      },
+      "gain": {
+        "label": "增益",
+        "params": {
+          "gain_db": "增益(dB)"
+        }
+      },
+      "highpass": {
+        "label": "高通滤波器",
+        "params": {
+          "cutoff_frequency_hz": "截止频率(Hz)"
+        }
+      },
+      "lowpass": {
+        "label": "低通滤波器",
+        "params": {
+          "cutoff_frequency_hz": "截止频率(Hz)"
+        }
+      },
+      "pitch_shift": {
+        "label": "音高变换",
+        "params": {
+          "semitones": "半音移动"
+        }
+      }
+    },
+    "builtinPresets": {
+      "Robotic": {
+        "name": "机器人",
+        "description": "金属机器人嗓音(慢速 LFO 加高反馈的镶边效果)"
+      },
+      "Radio": {
+        "name": "收音机",
+        "description": "带通滤波加轻度压缩的 AM 收音机薄嗓音"
+      },
+      "Echo Chamber": {
+        "name": "回声室",
+        "description": "宽广的混响加尾随回声"
+      },
+      "Deep Voice": {
+        "name": "低沉嗓音",
+        "description": "降低音高并增添温暖"
+      }
+    }
+  },
+  "stories": {
+    "title": "故事",
+    "newStory": "新建故事",
+    "loading": "加载故事中…",
+    "empty": {
+      "title": "暂无故事",
+      "hint": "创建您的第一个故事以开始"
+    },
+    "row": {
+      "itemCount_one": "{{count}} 项",
+      "itemCount_other": "{{count}} 项",
+      "ariaLabel": "故事 {{name}},{{count}} 项,{{updated}}",
+      "actionsLabel": "{{name}} 的操作"
+    },
+    "createDialog": {
+      "title": "新建故事",
+      "description": "创建新故事以将您的语音生成整理成对话。",
+      "action": "创建",
+      "creating": "创建中…"
+    },
+    "editDialog": {
+      "title": "编辑故事",
+      "description": "更新故事名称和描述。",
+      "saving": "保存中…"
+    },
+    "deleteDialog": {
+      "title": "确定吗?",
+      "description": "这将永久删除该故事及其所有项目。此操作不可撤销。",
+      "deleting": "删除中…"
+    },
+    "fields": {
+      "name": "名称",
+      "namePlaceholder": "我的故事",
+      "descriptionLabel": "描述(可选)",
+      "descriptionPlaceholder": "一段对话……"
+    },
+    "toast": {
+      "nameRequired": "请输入名称",
+      "nameRequiredDescription": "请输入故事名称",
+      "created": "故事已创建",
+      "createdDescription": "\"{{name}}\" 已创建",
+      "createFailed": "创建故事失败",
+      "updateFailed": "更新故事失败",
+      "deleteFailed": "删除故事失败"
+    }
+  },
+  "storyContent": {
+    "selectStory": {
+      "title": "选择一个故事",
+      "hint": "从列表中选择一个故事以查看其内容"
+    },
+    "loading": "加载故事中…",
+    "notFound": {
+      "title": "未找到故事",
+      "hint": "无法加载所选故事"
+    },
+    "generatingCount_one": "生成 {{count}} 个音频中",
+    "generatingCount_other": "生成 {{count}} 个音频中",
+    "add": "添加",
+    "searchPlaceholder": "按名称或文字内容搜索……",
+    "searchNoMatches": "未找到匹配的生成",
+    "searchNoAvailable": "暂无可用的生成",
+    "exportAudio": "导出音频",
+    "empty": {
+      "title": "此故事暂无项目",
+      "hint": "使用下方输入框生成语音以添加项目"
+    },
+    "itemActions": {
+      "playFromHere": "从此处播放",
+      "removeFromStory": "从故事中移除"
+    },
+    "toast": {
+      "removeFailed": "移除项目失败",
+      "reorderFailed": "重新排序项目失败",
+      "exportFailed": "导出音频失败",
+      "addFailed": "添加生成失败"
+    }
+  },
+  "history": {
+    "actions": {
+      "menu": "操作",
+      "play": "播放",
+      "exportAudio": "导出音频",
+      "exportPackage": "导出包",
+      "applyEffects": "应用效果",
+      "regenerate": "重新生成"
+    },
+    "deleteDialog": {
+      "title": "删除生成",
+      "body": "确定要删除来自 \"{{name}}\" 的这次生成吗?此操作不可撤销。",
+      "deleting": "删除中…"
+    },
+    "clearFailedDialog": {
+      "title": "清除失败的生成",
+      "body_one": "这将从历史记录中永久删除 {{count}} 条失败的生成。此操作不可撤销。",
+      "body_other": "这将从历史记录中永久删除 {{count}} 条失败的生成。此操作不可撤销。",
+      "clearing": "清除中…",
+      "clearAll": "全部清除"
+    },
+    "importDialog": {
+      "title": "导入生成",
+      "body": "从 \"{{name}}\" 导入生成。这将添加到您的历史记录中。",
+      "importing": "导入中…",
+      "action": "导入"
+    },
+    "effectsDialog": {
+      "title": "应用效果",
+      "body": "配置应用于此次生成的后处理效果。将会创建一个新版本。",
+      "sourceLabel": "来源",
+      "sourcePlaceholder": "选择来源版本",
+      "apply": "应用",
+      "applying": "应用中…"
+    }
+  },
+  "generation": {
+    "placeholder": {
+      "storyWithEffects": "为 \"{{name}}\" 生成语音… (输入 / 使用效果)",
+      "story": "为 \"{{name}}\" 生成语音…",
+      "profile": "使用 {{name}} 生成语音…",
+      "effectsHint": "输入 / 使用效果,如 [笑声]、[叹息]…",
+      "selectVoice": "请在上方选择一个声音档案…"
+    },
+    "button": {
+      "generate": "生成语音",
+      "generating": "生成中…",
+      "selectFirst": "请先选择声音档案"
+    },
+    "instruct": {
+      "show": "显示传达说明",
+      "hide": "隐藏传达说明",
+      "tooltip": "传达说明 (语气、情感、节奏)",
+      "placeholder": "传达说明——例如:温柔缓慢地说、威严清晰…"
+    },
+    "voiceSelector": {
+      "placeholder": "选择声音…"
+    },
+    "effects": {
+      "none": "无效果",
+      "profileDefault": "档案默认"
+    }
+  },
+  "main": {
+    "importVoice": "导入声音",
+    "createVoice": "创建声音",
+    "import": {
+      "invalidTitle": "文件类型无效",
+      "invalidDescription": "请选择有效的 .voicebox.zip 文件",
+      "successTitle": "声音已导入",
+      "successDescription": "成功导入声音档案",
+      "failedTitle": "导入声音档案失败",
+      "dialogTitle": "导入声音档案",
+      "dialogDescription": "从 \"{{name}}\" 导入声音档案。这将创建一个新的声音档案,包含所有样本。",
+      "importing": "导入中…",
+      "action": "导入"
+    }
+  },
+  "settings": {
+    "tabs": {
+      "general": "常规",
+      "generation": "生成",
+      "gpu": "GPU",
+      "logs": "日志",
+      "changelog": "更新日志",
+      "about": "关于"
+    },
+    "language": {
+      "label": "语言",
+      "description": "选择 Voicebox 的显示语言。"
+    },
+    "general": {
+      "docs": { "title": "阅读文档" },
+      "discord": { "title": "加入 Discord", "subtitle": "获取帮助 & 分享声音" },
+      "serverUrl": {
+        "title": "服务器 URL",
+        "description": "Voicebox 后端服务器的地址。",
+        "invalidUrl": "请输入有效的 URL",
+        "updatedTitle": "服务器 URL 已更新",
+        "updatedDescription": "已连接到 {{url}}"
+      },
+      "keepServerRunning": {
+        "title": "关闭应用时保持服务器运行",
+        "description": "关闭应用后,服务器将继续在后台运行。",
+        "failedTitle": "更新设置失败",
+        "failedDescription": "无法将设置同步到后端。",
+        "updatedTitle": "设置已更新",
+        "runningDescription": "关闭应用时服务器将继续运行",
+        "stoppedDescription": "关闭应用时服务器将停止"
+      },
+      "networkAccess": {
+        "title": "允许网络访问",
+        "description": "使网络上的其他设备可以访问服务器。更改后请重启应用。",
+        "updatedTitle": "设置已更新",
+        "enabled": "已启用网络访问。重启应用以应用更改。",
+        "disabled": "已禁用网络访问。重启应用以应用更改。"
+      },
+      "connection": {
+        "connecting": "连接中",
+        "offline": "离线",
+        "online": "在线"
+      },
+      "updates": {
+        "title": "应用更新",
+        "devSuffix": " (开发版)",
+        "devMode": {
+          "title": "开发模式",
+          "description": "开发模式下已禁用自动更新。"
+        },
+        "check": {
+          "title": "检查更新",
+          "available": "版本 {{version}} 可用",
+          "checking": "检查中…",
+          "upToDate": "已是最新版本",
+          "button": "检查"
+        },
+        "error": "更新错误",
+        "download": {
+          "title": "更新到 {{version}}",
+          "description": "下载并安装最新版本。",
+          "button": "下载"
+        },
+        "downloading": "下载更新中…",
+        "ready": {
+          "title": "更新已准备就绪",
+          "description": "版本 {{version}} 已下载。重启以完成。",
+          "button": "立即重启"
+        }
+      },
+      "api": {
+        "title": "API 访问",
+        "description": "通过 <code>{{url}}</code> 的 REST API 将 Voicebox 集成到您的工作流程中",
+        "viewReference": "查看完整的 API 参考",
+        "endpoints": {
+          "generate": "生成语音",
+          "health": "服务器状态",
+          "profiles": "声音列表",
+          "history": "历史生成"
+        }
+      }
+    },
+    "generation": {
+      "title": "生成",
+      "description": "长文本生成的控件。这些设置适用于所有引擎。",
+      "chunkLimit": {
+        "title": "自动分块上限",
+        "description": "长文本在句子边界处分块。较低的值可以提高长输出的质量。",
+        "value": "{{chars}} 字符"
+      },
+      "crossfade": {
+        "title": "块间淡入淡出",
+        "description": "在块之间混合音频以平滑过渡。设为 0 表示硬切换。",
+        "cut": "切换",
+        "ms": "{{ms}}毫秒"
+      },
+      "normalize": {
+        "title": "音频归一化",
+        "description": "将输出音量调整到所有生成结果一致的水平。"
+      },
+      "autoplay": {
+        "title": "生成后自动播放",
+        "description": "生成完成后自动播放音频。"
+      },
+      "folder": {
+        "title": "生成文件夹",
+        "description": "生成的音频文件在磁盘上的存储位置。",
+        "open": "打开"
+      }
+    },
+    "gpu": {
+      "cpuOnly": "仅 CPU",
+      "vramUsed": "{{mb}} MB 显存",
+      "noAcceleration": "未检测到 GPU 加速",
+      "active": "活动",
+      "cuda": {
+        "title": "CUDA 后端",
+        "description": "通过可下载的 CUDA 后端实现 NVIDIA GPU 加速。",
+        "downloading": "下载 CUDA 后端中…",
+        "downloadingShort": "下载中…",
+        "updating": "更新中…"
+      },
+      "restart": {
+        "ready": "服务器重启成功",
+        "waiting": "重启服务器中…",
+        "stopping": "停止服务器中…"
+      },
+      "download": {
+        "title": "下载 CUDA 后端",
+        "description": "约 2.4 GB 下载。需要支持 CUDA 的 NVIDIA GPU。",
+        "button": "下载"
+      },
+      "switchToCuda": {
+        "title": "切换到 CUDA 后端",
+        "description": "CUDA 后端已下载完成。重启以启用。",
+        "button": "重启"
+      },
+      "switchToCpu": {
+        "title": "切换到 CPU 后端",
+        "description": "禁用 GPU 加速。您之后可以重新下载 CUDA。",
+        "button": "切换"
+      },
+      "remove": {
+        "title": "移除 CUDA 后端",
+        "description": "删除已下载的 CUDA 二进制文件以释放磁盘空间。",
+        "button": "移除"
+      },
+      "errors": {
+        "downloadFailed": "下载失败",
+        "downloadStart": "启动下载失败",
+        "restartFailed": "重启失败",
+        "switchCpu": "切换到 CPU 失败",
+        "deleteCuda": "删除 CUDA 后端失败"
+      },
+      "footer": "Voicebox 会自动检测并使用系统上可用的最佳 GPU。在 Apple Silicon Mac 上,MLX 后端通过 Metal Performance Shaders (MPS) 在神经引擎和 GPU 上原生运行,无需额外设置。在配备 NVIDIA GPU 的 Windows 和 Linux 上,您可以下载可选的 CUDA 后端以获得硬件加速推理。AMD ROCm、Intel XPU 和 DirectML 也通过 PyTorch 获得支持。未检测到 GPU 时,Voicebox 会退回到 CPU——所有引擎仍可工作,只是速度较慢。"
+    },
+    "logs": {
+      "title": "服务器日志",
+      "lineCount_one": "{{count}} 行",
+      "lineCount_other": "{{count}} 行",
+      "scrollToBottom": "滚动到底部",
+      "clear": "清除",
+      "empty": "暂无日志输出。",
+      "devHint": "仅当应用管理服务器进程(生产构建)时才会捕获服务器日志。"
+    },
+    "changelog": {
+      "devBadge": "开发版",
+      "showLess": "收起",
+      "showMore": "展开"
+    },
+    "about": {
+      "tagline": "开源语音合成工作室。克隆声音、生成语音、应用效果、构建语音驱动的应用——全部在您的本地机器上运行。",
+      "createdBy": "创建者",
+      "buyCoffee": "请我喝杯咖啡",
+      "license": "采用 <link>MIT</link> 协议"
+    }
+  },
+  "models": {
+    "title": "模型",
+    "subtitle": "下载和管理用于语音生成和转录的 AI 模型",
+    "defaultName": "模型",
+    "unknownSize": "未知大小",
+    "sections": {
+      "voiceGeneration": "语音生成",
+      "transcription": "语音转录"
+    },
+    "status": {
+      "loaded": "已加载"
+    },
+    "storage": {
+      "location": "存储位置",
+      "open": "打开",
+      "change": "更改",
+      "migrating": "迁移中…",
+      "reset": "重置",
+      "pickerTitle": "选择模型存储文件夹"
+    },
+    "progress": {
+      "connecting": "连接中…",
+      "connectingHf": "连接到 HuggingFace 中…"
+    },
+    "problems": {
+      "title": "问题",
+      "clearAll": "全部清除",
+      "noDetails": "没有可用的错误详情。请重试下载。",
+      "startedAt": "开始于 {{time}}"
+    },
+    "detail": {
+      "loadingInfo": "加载模型信息中…",
+      "byAuthor": "由 {{author}}",
+      "downloads": "下载量",
+      "likes": "点赞数",
+      "license": "许可",
+      "languagesCount": "支持 {{count}} 种语言",
+      "languagesList": "语言:{{list}}",
+      "onDisk": "磁盘占用 {{size}}"
+    },
+    "actions": {
+      "download": "下载",
+      "retry": "重试下载",
+      "unload": "卸载",
+      "unloading": "卸载中…",
+      "unloadFirst": "删除前请先卸载模型",
+      "deleteModel": "删除模型"
+    },
+    "deleteDialog": {
+      "title": "删除模型",
+      "body": "确定要删除 <strong>{{name}}</strong> 吗?",
+      "sizeNote": "这将释放 {{size}} 磁盘空间。如果您想再次使用该模型,需要重新下载。",
+      "deleting": "删除中…"
+    },
+    "migrateDialog": {
+      "title": "移动模型到新位置?",
+      "description": "在模型迁移到新文件夹期间,服务器将关闭。迁移完成后会自动重启。",
+      "action": "移动模型",
+      "preparing": "准备中…",
+      "restartingServer": "重启服务器中…"
+    },
+    "migrate": {
+      "title": "移动模型中",
+      "offline": "模型迁移期间服务器处于离线状态。"
+    },
+    "toast": {
+      "downloadFailed": "下载失败",
+      "cancelFailed": "取消失败",
+      "cancelFailedDescription": "无法取消下载任务。",
+      "deleted": "模型已删除",
+      "deletedDescription": "{{name}} 已成功删除。",
+      "deleteFailed": "删除失败",
+      "unloaded": "模型已卸载",
+      "unloadedDescription": "{{name}} 已从内存中卸载。",
+      "unloadFailed": "卸载失败",
+      "openFolderFailed": "打开模型文件夹失败",
+      "pickerFailed": "打开文件夹选择器失败",
+      "resetToDefault": "已重置到默认位置。重启服务器中…",
+      "noModelsToMigrate": "没有可迁移的模型",
+      "noModelsToMigrateDescription": "更改存储位置前请先下载至少一个模型。",
+      "migrated": "模型已成功移动",
+      "migrationFailed": "迁移失败",
+      "migrationFailedGeneric": "迁移模型失败",
+      "migrationConnectionLost": "迁移期间丢失连接"
+    }
+  }
+}

app/src/i18n/locales/zh-TW/translation.json

@@ -0,0 +1,834 @@
+{
+  "common": {
+    "cancel": "取消",
+    "save": "儲存",
+    "delete": "刪除",
+    "edit": "編輯",
+    "close": "關閉",
+    "confirm": "確認",
+    "loading": "載入中…",
+    "error": "錯誤",
+    "unknown": "未知",
+    "unknownError": "未知錯誤"
+  },
+  "nav": {
+    "generate": "生成",
+    "stories": "故事",
+    "voices": "聲音",
+    "effects": "效果",
+    "audio": "音訊",
+    "models": "模型",
+    "settings": "設定",
+    "updateBadge": "更新"
+  },
+  "voicesTab": {
+    "title": "聲音",
+    "loading": "載入聲音中…",
+    "searchPlaceholder": "搜尋聲音……",
+    "newVoice": "新增聲音",
+    "avatarAlt": "{{name}} 的頭像",
+    "selectChannels": "選擇通道……",
+    "channelDefaultLabel": "{{name}}(預設)",
+    "columns": {
+      "name": "名稱",
+      "language": "語言",
+      "generations": "生成次數",
+      "samples": "樣本",
+      "effects": "效果",
+      "channels": "通道"
+    }
+  },
+  "voiceInspector": {
+    "loading": "載入中…",
+    "defaultEffectsHint": "自動套用於使用此聲音的新生成。",
+    "fields": {
+      "description": "描述"
+    },
+    "toast": {
+      "invalidImageFormat": "請選擇 PNG、JPG 或 WebP 格式",
+      "avatarUpdated": "頭像已更新",
+      "savedDescription": "\"{{name}}\" 已儲存。"
+    }
+  },
+  "audioChannels": {
+    "title": "音訊通道",
+    "newChannel": "新增通道",
+    "loading": "載入中…",
+    "confirmDelete": "刪除此通道?",
+    "noVoicesAssigned": "未指派聲音",
+    "selectDevice": "選擇裝置",
+    "addDevice": "新增裝置",
+    "addVoice": "新增聲音",
+    "defaultSuffix": "預設",
+    "empty": {
+      "message": "尚無音訊通道。建立您的第一個通道,將聲音路由到特定裝置。",
+      "action": "建立通道"
+    },
+    "labels": {
+      "outputDevices": "輸出裝置",
+      "assignedVoices": "已指派聲音"
+    },
+    "devices": {
+      "title": "可用裝置",
+      "defaultNote": "預設通道使用系統預設裝置",
+      "toggleHint": "點選裝置以將其加入或從所選通道中移除",
+      "selectHint": "選擇通道以指派裝置",
+      "empty": "找不到音訊裝置",
+      "requiresTauri": "音訊裝置選擇需要 Tauri"
+    },
+    "fields": {
+      "name": "通道名稱",
+      "namePlaceholder": "例如:虛擬纜線、廣播"
+    },
+    "createDialog": {
+      "title": "建立音訊通道",
+      "description": "建立新的音訊通道(匯流排),將聲音路由到特定的輸出裝置。",
+      "action": "建立"
+    },
+    "editDialog": {
+      "title": "編輯通道",
+      "description": "更新通道設定與聲音指派。"
+    }
+  },
+  "profileForm": {
+    "createTitle": "建立聲音",
+    "editTitle": "編輯聲音",
+    "createDescription": "從音訊樣本或內建聲音建立新的聲音檔案。",
+    "editDescription": "更新您的聲音檔案細節並管理樣本。",
+    "draftRestored": "已還原草稿",
+    "discard": "捨棄",
+    "source": {
+      "clone": "從音訊複製",
+      "builtin": "內建聲音"
+    },
+    "builtin": {
+      "hint": "選擇預建的聲音。這些不需要音訊樣本。",
+      "badge": "內建聲音",
+      "note": "此檔案使用內建聲音。建立後聲音無法變更。"
+    },
+    "sampleTabs": {
+      "upload": "上傳",
+      "record": "錄製",
+      "system": "系統音訊"
+    },
+    "fields": {
+      "engine": "引擎",
+      "voice": "聲音",
+      "name": "名稱",
+      "namePlaceholder": "我的聲音",
+      "descriptionLabel": "描述(選填)",
+      "descriptionPlaceholder": "描述此聲音……",
+      "language": "語言",
+      "referenceText": "參考文字",
+      "referenceTextPlaceholder": "輸入音訊中所說的確切文字……",
+      "defaultEngine": "預設引擎",
+      "noPreference": "無偏好",
+      "defaultEngineHint": "選擇此檔案時自動使用此引擎。",
+      "defaultEffects": "預設效果",
+      "defaultEffectsHint": "自動套用於使用此聲音所有新生成的效果。"
+    },
+    "avatar": {
+      "alt": "頭像預覽"
+    },
+    "actions": {
+      "saving": "儲存中…",
+      "saveChanges": "儲存變更",
+      "createProfile": "建立檔案"
+    },
+    "validation": {
+      "nameRequired": "請輸入名稱",
+      "referenceRequired": "新增樣本時需要參考文字",
+      "sampleRequired": "需要音訊樣本",
+      "referenceTextRequired": "需要參考文字",
+      "audioTooLong": "音訊過長({{duration}})。最大時長為 {{max}}。",
+      "audioFailed": "音訊檔案驗證失敗。請嘗試其他檔案。"
+    },
+    "toast": {
+      "recordingComplete": "錄製完成",
+      "recordingCompleteDescription": "音訊已成功錄製。",
+      "recordingError": "錄製錯誤",
+      "systemAudioCaptured": "已擷取系統音訊",
+      "systemAudioCapturedDescription": "音訊已成功擷取。",
+      "systemAudioError": "系統音訊擷取錯誤",
+      "transcribeFailed": "轉錄失敗",
+      "transcribeFailedFallback": "無法轉錄音訊",
+      "noFile": "未選擇檔案",
+      "noFileDescription": "請先選擇音訊檔案。",
+      "invalidFile": "檔案類型無效",
+      "invalidImageFormat": "請選擇圖片檔案(PNG、JPG 或 WebP)",
+      "fileTooLarge": "檔案過大",
+      "imageTooLargeDescription": "圖片必須小於 5MB",
+      "avatarRemoved": "頭像已移除",
+      "avatarRemovedDescription": "頭像圖片已成功移除。",
+      "avatarRemoveFailed": "移除頭像失敗",
+      "avatarUploadFailed": "頭像上傳失敗",
+      "avatarUploadFailedFallback": "無法上傳頭像",
+      "effectsUpdateFailed": "效果更新失敗",
+      "effectsUpdateFailedFallback": "無法儲存效果鏈",
+      "voiceUpdated": "聲音已更新",
+      "voiceUpdatedDescription": "\"{{name}}\" 已成功更新。",
+      "noVoiceSelected": "未選擇聲音",
+      "noVoiceSelectedDescription": "請選擇內建聲音。",
+      "profileCreated": "已建立檔案",
+      "profileCreatedBuiltin": "\"{{name}}\" 已使用內建聲音建立。",
+      "profileCreatedSample": "\"{{name}}\" 已使用樣本建立。",
+      "sampleRequired": "需要音訊樣本",
+      "sampleRequiredDescription": "請提供音訊樣本以建立聲音檔案。",
+      "referenceTextRequired": "需要參考文字",
+      "referenceTextRequiredDescription": "請提供音訊樣本的參考文字。",
+      "invalidAudio": "音訊檔案無效",
+      "invalidAudioDescription": "音訊時長為 {{duration}},但最大為 {{max}}。",
+      "validationError": "驗證錯誤",
+      "rollbackFailed": "復原失敗",
+      "rollbackFailedDescription": "樣本上傳失敗後無法移除已建立的檔案。",
+      "profileRolledBack": "檔案已復原。",
+      "sampleFailed": "新增樣本失敗",
+      "sampleFailedDescription": "新增樣本失敗。",
+      "sampleFailedRolledBack": "新增樣本失敗。檔案已復原。",
+      "saveFailed": "儲存檔案失敗"
+    }
+  },
+  "audioSample": {
+    "chooseFile": "選擇檔案",
+    "uploadHint": "點選以選擇檔案或拖放。最大時長:30 秒。",
+    "fileUploaded": "檔案已上傳",
+    "fileLabel": "檔案:{{name}}",
+    "play": "播放",
+    "pause": "暫停",
+    "transcribe": "轉錄",
+    "transcribing": "轉錄中…",
+    "remove": "移除",
+    "startRecording": "開始錄製",
+    "recordHint": "點選以開始錄製。最大時長:30 秒。",
+    "stopRecording": "停止錄製",
+    "remaining": "剩餘 {{time}}",
+    "recordingComplete": "錄製完成",
+    "recordAgain": "重新錄製",
+    "startCapture": "開始擷取",
+    "systemHint": "從您的系統擷取音訊。最大時長:30 秒。",
+    "stopCapture": "停止擷取",
+    "captureComplete": "擷取完成",
+    "captureAgain": "重新擷取"
+  },
+  "sampleList": {
+    "loading": "載入樣本中…",
+    "empty": {
+      "title": "尚無樣本",
+      "hint": "新增第一個音訊樣本以開始"
+    },
+    "editing": "正在編輯轉錄",
+    "placeholder": "輸入參考文字……",
+    "saving": "儲存中…",
+    "editTranscription": "編輯轉錄",
+    "deleteSample": "刪除樣本",
+    "addSample": "新增樣本",
+    "note": "注意:單一 30 秒的樣本效果最佳。多個樣本可能會降低品質。未來版本中樣本可能可互換,並為同一聲音的不同風格加上標籤。",
+    "deleteDialog": {
+      "title": "刪除樣本",
+      "description": "確定要刪除此音訊樣本嗎?此操作無法復原。",
+      "deleting": "刪除中…"
+    },
+    "player": {
+      "play": "播放樣本",
+      "pause": "暫停樣本",
+      "stop": "停止",
+      "stopAria": "停止播放",
+      "position": "樣本播放位置",
+      "positionValue": "{{current}} / {{total}}"
+    },
+    "toast": {
+      "invalidText": "文字無效",
+      "invalidTextDescription": "參考文字不能為空。",
+      "updated": "樣本已更新",
+      "updatedDescription": "參考文字已成功更新。",
+      "updateFailed": "更新失敗",
+      "updateFailedFallback": "更新樣本失敗"
+    }
+  },
+  "profiles": {
+    "card": {
+      "noDescription": "無描述",
+      "designed": "設計",
+      "export": "匯出聲音檔案",
+      "edit": "編輯聲音檔案",
+      "delete": "刪除聲音檔案",
+      "selectLabel": "{{name}},{{language}}。選擇用於生成的聲音。",
+      "selectLabelSelected": "{{name}},{{language}}。已選為用於生成的聲音。"
+    },
+    "list": {
+      "errorLoading": "載入聲音檔案時出錯:{{message}}",
+      "empty": "尚無聲音檔案。建立您的第一個檔案以開始使用。",
+      "createVoice": "建立聲音",
+      "unsupportedNote": "目前模型僅可選擇支援的聲音檔案。"
+    },
+    "deleteDialog": {
+      "title": "刪除聲音檔案",
+      "body": "確定要刪除 \"{{name}}\" 嗎?此操作無法復原。",
+      "deleting": "刪除中…"
+    }
+  },
+  "effects": {
+    "title": "效果",
+    "newPreset": "新增預設集",
+    "noDescription": "無描述",
+    "placeholder": "選擇預設集或建立新的",
+    "effectCount_one": "{{count}} 個效果",
+    "effectCount_other": "{{count}} 個效果",
+    "sections": {
+      "builtin": "內建",
+      "custom": "自訂",
+      "new": "新增"
+    },
+    "badge": {
+      "builtin": "內建"
+    },
+    "unsaved": {
+      "title": "未儲存的預設集",
+      "hint": "在右側面板設定效果。"
+    },
+    "detail": {
+      "newTitle": "新增預設集",
+      "editTitle": "編輯預設集",
+      "savePreset": "儲存預設集",
+      "saveAsCustom": "另存為自訂",
+      "saving": "儲存中…",
+      "deleting": "刪除中…"
+    },
+    "fields": {
+      "name": "名稱",
+      "namePlaceholder": "我的預設集……",
+      "description": "描述",
+      "descriptionPlaceholder": "描述此預設集的作用……"
+    },
+    "preview": {
+      "label": "預覽",
+      "button": "預覽",
+      "processing": "處理中…",
+      "hint": "預覽僅將效果套用於乾淨版本,不會儲存。"
+    },
+    "saveAs": {
+      "title": "另存為自訂預設集",
+      "description": "基於目前的效果鏈建立新的自訂預設集。",
+      "suggestedName": "{{name}}(副本)"
+    },
+    "toast": {
+      "saved": "預設集已儲存",
+      "createdDescription": "\"{{name}}\" 已建立。",
+      "updated": "預設集已更新",
+      "deleted": "預設集已刪除",
+      "saveFailed": "儲存失敗",
+      "deleteFailed": "刪除失敗",
+      "previewFailed": "預覽失敗",
+      "nameRequired": "請輸入名稱"
+    },
+    "chain": {
+      "loadPreset": "載入預設集……",
+      "addEffect": "新增效果……",
+      "clear": "清除",
+      "enable": "啟用",
+      "disable": "停用",
+      "remove": "移除"
+    },
+    "types": {
+      "chorus": {
+        "label": "合聲 / 鑲邊",
+        "params": {
+          "rate_hz": "LFO 速度(Hz)",
+          "depth": "調變深度",
+          "feedback": "回饋量",
+          "centre_delay_ms": "中心延遲(毫秒)",
+          "mix": "乾溼混合"
+        }
+      },
+      "reverb": {
+        "label": "殘響",
+        "params": {
+          "room_size": "空間大小",
+          "damping": "高頻阻尼",
+          "wet_level": "溼聲電平",
+          "dry_level": "乾聲電平",
+          "width": "立體聲寬度"
+        }
+      },
+      "delay": {
+        "label": "延遲",
+        "params": {
+          "delay_seconds": "延遲時間(秒)",
+          "feedback": "回饋量",
+          "mix": "乾溼混合"
+        }
+      },
+      "compressor": {
+        "label": "壓縮器",
+        "params": {
+          "threshold_db": "閾值(dB)",
+          "ratio": "壓縮比",
+          "attack_ms": "起音時間(毫秒)",
+          "release_ms": "釋放時間(毫秒)"
+        }
+      },
+      "gain": {
+        "label": "增益",
+        "params": {
+          "gain_db": "增益(dB)"
+        }
+      },
+      "highpass": {
+        "label": "高通濾波器",
+        "params": {
+          "cutoff_frequency_hz": "截止頻率(Hz)"
+        }
+      },
+      "lowpass": {
+        "label": "低通濾波器",
+        "params": {
+          "cutoff_frequency_hz": "截止頻率(Hz)"
+        }
+      },
+      "pitch_shift": {
+        "label": "音高變換",
+        "params": {
+          "semitones": "半音移動"
+        }
+      }
+    },
+    "builtinPresets": {
+      "Robotic": {
+        "name": "機器人",
+        "description": "金屬機器人嗓音(慢速 LFO 加高回饋的鑲邊效果)"
+      },
+      "Radio": {
+        "name": "收音機",
+        "description": "帶通濾波加輕度壓縮的 AM 收音機薄嗓音"
+      },
+      "Echo Chamber": {
+        "name": "回音室",
+        "description": "寬廣的殘響加尾隨回音"
+      },
+      "Deep Voice": {
+        "name": "低沉嗓音",
+        "description": "降低音高並增添溫暖"
+      }
+    }
+  },
+  "stories": {
+    "title": "故事",
+    "newStory": "新增故事",
+    "loading": "載入故事中…",
+    "empty": {
+      "title": "尚無故事",
+      "hint": "建立您的第一個故事以開始"
+    },
+    "row": {
+      "itemCount_one": "{{count}} 項",
+      "itemCount_other": "{{count}} 項",
+      "ariaLabel": "故事 {{name}},{{count}} 項,{{updated}}",
+      "actionsLabel": "{{name}} 的操作"
+    },
+    "createDialog": {
+      "title": "新增故事",
+      "description": "建立新故事以將您的語音生成整理成對話。",
+      "action": "建立",
+      "creating": "建立中…"
+    },
+    "editDialog": {
+      "title": "編輯故事",
+      "description": "更新故事名稱與描述。",
+      "saving": "儲存中…"
+    },
+    "deleteDialog": {
+      "title": "確定嗎?",
+      "description": "這將永久刪除該故事及其所有項目。此操作無法復原。",
+      "deleting": "刪除中…"
+    },
+    "fields": {
+      "name": "名稱",
+      "namePlaceholder": "我的故事",
+      "descriptionLabel": "描述(選填)",
+      "descriptionPlaceholder": "一段對話……"
+    },
+    "toast": {
+      "nameRequired": "請輸入名稱",
+      "nameRequiredDescription": "請輸入故事名稱",
+      "created": "已建立故事",
+      "createdDescription": "\"{{name}}\" 已建立",
+      "createFailed": "建立故事失敗",
+      "updateFailed": "更新故事失敗",
+      "deleteFailed": "刪除故事失敗"
+    }
+  },
+  "storyContent": {
+    "selectStory": {
+      "title": "選擇一個故事",
+      "hint": "從清單中選擇故事以檢視其內容"
+    },
+    "loading": "載入故事中…",
+    "notFound": {
+      "title": "找不到故事",
+      "hint": "無法載入所選故事"
+    },
+    "generatingCount_one": "生成 {{count}} 個音訊中",
+    "generatingCount_other": "生成 {{count}} 個音訊中",
+    "add": "新增",
+    "searchPlaceholder": "依名稱或文字內容搜尋……",
+    "searchNoMatches": "找不到相符的生成",
+    "searchNoAvailable": "尚無可用的生成",
+    "exportAudio": "匯出音訊",
+    "empty": {
+      "title": "此故事尚無項目",
+      "hint": "使用下方輸入框生成語音以新增項目"
+    },
+    "itemActions": {
+      "playFromHere": "從此處播放",
+      "removeFromStory": "從故事中移除"
+    },
+    "toast": {
+      "removeFailed": "移除項目失敗",
+      "reorderFailed": "重新排序項目失敗",
+      "exportFailed": "匯出音訊失敗",
+      "addFailed": "新增生成失敗"
+    }
+  },
+  "history": {
+    "actions": {
+      "menu": "操作",
+      "play": "播放",
+      "exportAudio": "匯出音訊",
+      "exportPackage": "匯出套件",
+      "applyEffects": "套用效果",
+      "regenerate": "重新生成"
+    },
+    "deleteDialog": {
+      "title": "刪除生成",
+      "body": "確定要刪除來自 \"{{name}}\" 的這次生成嗎?此操作無法復原。",
+      "deleting": "刪除中…"
+    },
+    "clearFailedDialog": {
+      "title": "清除失敗的生成",
+      "body_one": "這將從歷史記錄中永久刪除 {{count}} 筆失敗的生成。此操作無法復原。",
+      "body_other": "這將從歷史記錄中永久刪除 {{count}} 筆失敗的生成。此操作無法復原。",
+      "clearing": "清除中…",
+      "clearAll": "全部清除"
+    },
+    "importDialog": {
+      "title": "匯入生成",
+      "body": "從 \"{{name}}\" 匯入生成。這會將其加入您的歷史記錄。",
+      "importing": "匯入中…",
+      "action": "匯入"
+    },
+    "effectsDialog": {
+      "title": "套用效果",
+      "body": "設定要套用於此生成的後製效果。將會建立一個新版本。",
+      "sourceLabel": "來源",
+      "sourcePlaceholder": "選擇來源版本",
+      "apply": "套用",
+      "applying": "套用中…"
+    }
+  },
+  "generation": {
+    "placeholder": {
+      "storyWithEffects": "為 \"{{name}}\" 生成語音… (輸入 / 使用效果)",
+      "story": "為 \"{{name}}\" 生成語音…",
+      "profile": "使用 {{name}} 生成語音…",
+      "effectsHint": "輸入 / 使用效果,如 [笑聲]、[嘆息]…",
+      "selectVoice": "請在上方選擇一個聲音檔案…"
+    },
+    "button": {
+      "generate": "生成語音",
+      "generating": "生成中…",
+      "selectFirst": "請先選擇聲音檔案"
+    },
+    "instruct": {
+      "show": "顯示傳達指示",
+      "hide": "隱藏傳達指示",
+      "tooltip": "傳達指示 (語氣、情感、節奏)",
+      "placeholder": "傳達指示——例如:溫柔緩慢地說、威嚴清晰…"
+    },
+    "voiceSelector": {
+      "placeholder": "選擇聲音…"
+    },
+    "effects": {
+      "none": "無效果",
+      "profileDefault": "檔案預設"
+    }
+  },
+  "main": {
+    "importVoice": "匯入聲音",
+    "createVoice": "建立聲音",
+    "import": {
+      "invalidTitle": "檔案類型無效",
+      "invalidDescription": "請選擇有效的 .voicebox.zip 檔案",
+      "successTitle": "聲音已匯入",
+      "successDescription": "成功匯入聲音檔案",
+      "failedTitle": "匯入聲音檔案失敗",
+      "dialogTitle": "匯入聲音檔案",
+      "dialogDescription": "從 \"{{name}}\" 匯入聲音檔案。這將建立包含所有樣本的新聲音檔案。",
+      "importing": "匯入中…",
+      "action": "匯入"
+    }
+  },
+  "settings": {
+    "tabs": {
+      "general": "一般",
+      "generation": "生成",
+      "gpu": "GPU",
+      "logs": "日誌",
+      "changelog": "更新日誌",
+      "about": "關於"
+    },
+    "language": {
+      "label": "語言",
+      "description": "選擇 Voicebox 的顯示語言。"
+    },
+    "general": {
+      "docs": { "title": "閱讀文件" },
+      "discord": { "title": "加入 Discord", "subtitle": "取得協助與分享聲音" },
+      "serverUrl": {
+        "title": "伺服器 URL",
+        "description": "Voicebox 後端伺服器的位址。",
+        "invalidUrl": "請輸入有效的 URL",
+        "updatedTitle": "伺服器 URL 已更新",
+        "updatedDescription": "已連線至 {{url}}"
+      },
+      "keepServerRunning": {
+        "title": "關閉應用程式時保持伺服器執行",
+        "description": "關閉應用程式後,伺服器將繼續在背景執行。",
+        "failedTitle": "更新設定失敗",
+        "failedDescription": "無法將設定同步到後端。",
+        "updatedTitle": "設定已更新",
+        "runningDescription": "關閉應用程式時伺服器將繼續執行",
+        "stoppedDescription": "關閉應用程式時伺服器將停止"
+      },
+      "networkAccess": {
+        "title": "允許網路存取",
+        "description": "讓網路上的其他裝置可存取伺服器。變更後請重新啟動應用程式。",
+        "updatedTitle": "設定已更新",
+        "enabled": "已啟用網路存取。重新啟動應用程式以套用。",
+        "disabled": "已停用網路存取。重新啟動應用程式以套用。"
+      },
+      "connection": {
+        "connecting": "連線中",
+        "offline": "離線",
+        "online": "線上"
+      },
+      "updates": {
+        "title": "應用程式更新",
+        "devSuffix": " (開發版)",
+        "devMode": {
+          "title": "開發模式",
+          "description": "開發模式下已停用自動更新。"
+        },
+        "check": {
+          "title": "檢查更新",
+          "available": "版本 {{version}} 可用",
+          "checking": "檢查中…",
+          "upToDate": "已是最新版本",
+          "button": "檢查"
+        },
+        "error": "更新錯誤",
+        "download": {
+          "title": "更新到 {{version}}",
+          "description": "下載並安裝最新版本。",
+          "button": "下載"
+        },
+        "downloading": "下載更新中…",
+        "ready": {
+          "title": "更新已準備就緒",
+          "description": "版本 {{version}} 已下載。重新啟動以完成。",
+          "button": "立即重新啟動"
+        }
+      },
+      "api": {
+        "title": "API 存取",
+        "description": "透過 <code>{{url}}</code> 的 REST API 將 Voicebox 整合到您的工作流程中",
+        "viewReference": "檢視完整的 API 參考",
+        "endpoints": {
+          "generate": "生成語音",
+          "health": "伺服器狀態",
+          "profiles": "聲音清單",
+          "history": "歷史生成"
+        }
+      }
+    },
+    "generation": {
+      "title": "生成",
+      "description": "長文字生成的控制項。這些設定適用於所有引擎。",
+      "chunkLimit": {
+        "title": "自動分塊上限",
+        "description": "長文字會在句子邊界處分塊。較低的值可以提升長輸出的品質。",
+        "value": "{{chars}} 字元"
+      },
+      "crossfade": {
+        "title": "區塊間淡入淡出",
+        "description": "在區塊之間混合音訊以平滑過渡。設為 0 表示硬切換。",
+        "cut": "切換",
+        "ms": "{{ms}} 毫秒"
+      },
+      "normalize": {
+        "title": "音訊標準化",
+        "description": "將輸出音量調整到所有生成結果一致的水準。"
+      },
+      "autoplay": {
+        "title": "生成後自動播放",
+        "description": "生成完成後自動播放音訊。"
+      },
+      "folder": {
+        "title": "生成資料夾",
+        "description": "生成的音訊檔案在磁碟上的儲存位置。",
+        "open": "開啟"
+      }
+    },
+    "gpu": {
+      "cpuOnly": "僅 CPU",
+      "vramUsed": "{{mb}} MB 顯示記憶體",
+      "noAcceleration": "未偵測到 GPU 加速",
+      "active": "啟用中",
+      "cuda": {
+        "title": "CUDA 後端",
+        "description": "透過可下載的 CUDA 後端實現 NVIDIA GPU 加速。",
+        "downloading": "下載 CUDA 後端中…",
+        "downloadingShort": "下載中…",
+        "updating": "更新中…"
+      },
+      "restart": {
+        "ready": "伺服器重新啟動成功",
+        "waiting": "重新啟動伺服器中…",
+        "stopping": "停止伺服器中…"
+      },
+      "download": {
+        "title": "下載 CUDA 後端",
+        "description": "約 2.4 GB 下載。需要支援 CUDA 的 NVIDIA GPU。",
+        "button": "下載"
+      },
+      "switchToCuda": {
+        "title": "切換到 CUDA 後端",
+        "description": "CUDA 後端已下載完成。重新啟動以啟用。",
+        "button": "重新啟動"
+      },
+      "switchToCpu": {
+        "title": "切換到 CPU 後端",
+        "description": "停用 GPU 加速。稍後可以重新下載 CUDA。",
+        "button": "切換"
+      },
+      "remove": {
+        "title": "移除 CUDA 後端",
+        "description": "刪除已下載的 CUDA 二進位檔以釋放磁碟空間。",
+        "button": "移除"
+      },
+      "errors": {
+        "downloadFailed": "下載失敗",
+        "downloadStart": "啟動下載失敗",
+        "restartFailed": "重新啟動失敗",
+        "switchCpu": "切換到 CPU 失敗",
+        "deleteCuda": "刪除 CUDA 後端失敗"
+      },
+      "footer": "Voicebox 會自動偵測並使用系統上可用的最佳 GPU。在 Apple Silicon Mac 上,MLX 後端透過 Metal Performance Shaders (MPS) 在神經引擎與 GPU 上原生執行,無需額外設定。在配備 NVIDIA GPU 的 Windows 與 Linux 上,可以下載選用的 CUDA 後端以取得硬體加速推論。AMD ROCm、Intel XPU 與 DirectML 也透過 PyTorch 獲得支援。未偵測到 GPU 時,Voicebox 會退回到 CPU——所有引擎仍可運作,只是速度較慢。"
+    },
+    "logs": {
+      "title": "伺服器日誌",
+      "lineCount_one": "{{count}} 行",
+      "lineCount_other": "{{count}} 行",
+      "scrollToBottom": "捲動到底部",
+      "clear": "清除",
+      "empty": "尚無日誌輸出。",
+      "devHint": "僅當應用程式管理伺服器程序(正式版建置)時才會擷取伺服器日誌。"
+    },
+    "changelog": {
+      "devBadge": "開發版",
+      "showLess": "收合",
+      "showMore": "展開"
+    },
+    "about": {
+      "tagline": "開源語音合成工作室。複製聲音、生成語音、套用效果、打造語音驅動的應用程式——全部在您的本機執行。",
+      "createdBy": "作者",
+      "buyCoffee": "請我喝杯咖啡",
+      "license": "採用 <link>MIT</link> 授權"
+    }
+  },
+  "models": {
+    "title": "模型",
+    "subtitle": "下載與管理用於語音生成和轉錄的 AI 模型",
+    "defaultName": "模型",
+    "unknownSize": "未知大小",
+    "sections": {
+      "voiceGeneration": "語音生成",
+      "transcription": "語音轉錄"
+    },
+    "status": {
+      "loaded": "已載入"
+    },
+    "storage": {
+      "location": "儲存位置",
+      "open": "開啟",
+      "change": "變更",
+      "migrating": "遷移中…",
+      "reset": "重設",
+      "pickerTitle": "選擇模型儲存資料夾"
+    },
+    "progress": {
+      "connecting": "連線中…",
+      "connectingHf": "連線至 HuggingFace 中…"
+    },
+    "problems": {
+      "title": "問題",
+      "clearAll": "全部清除",
+      "noDetails": "沒有可用的錯誤詳細資訊。請重試下載。",
+      "startedAt": "開始於 {{time}}"
+    },
+    "detail": {
+      "loadingInfo": "載入模型資訊中…",
+      "byAuthor": "作者 {{author}}",
+      "downloads": "下載次數",
+      "likes": "喜愛數",
+      "license": "授權",
+      "languagesCount": "支援 {{count}} 種語言",
+      "languagesList": "語言:{{list}}",
+      "onDisk": "磁碟佔用 {{size}}"
+    },
+    "actions": {
+      "download": "下載",
+      "retry": "重試下載",
+      "unload": "卸載",
+      "unloading": "卸載中…",
+      "unloadFirst": "刪除前請先卸載模型",
+      "deleteModel": "刪除模型"
+    },
+    "deleteDialog": {
+      "title": "刪除模型",
+      "body": "確定要刪除 <strong>{{name}}</strong> 嗎?",
+      "sizeNote": "這將釋放 {{size}} 磁碟空間。若要再次使用該模型,必須重新下載。",
+      "deleting": "刪除中…"
+    },
+    "migrateDialog": {
+      "title": "將模型移動到新位置?",
+      "description": "在模型遷移到新資料夾期間,伺服器將會關閉。遷移完成後會自動重新啟動。",
+      "action": "移動模型",
+      "preparing": "準備中…",
+      "restartingServer": "重新啟動伺服器中…"
+    },
+    "migrate": {
+      "title": "移動模型中",
+      "offline": "模型遷移期間伺服器處於離線狀態。"
+    },
+    "toast": {
+      "downloadFailed": "下載失敗",
+      "cancelFailed": "取消失敗",
+      "cancelFailedDescription": "無法取消下載任務。",
+      "deleted": "模型已刪除",
+      "deletedDescription": "{{name}} 已成功刪除。",
+      "deleteFailed": "刪除失敗",
+      "unloaded": "模型已卸載",
+      "unloadedDescription": "{{name}} 已從記憶體中卸載。",
+      "unloadFailed": "卸載失敗",
+      "openFolderFailed": "開啟模型資料夾失敗",
+      "pickerFailed": "開啟資料夾選擇器失敗",
+      "resetToDefault": "已重設至預設位置。重新啟動伺服器中…",
+      "noModelsToMigrate": "沒有可遷移的模型",
+      "noModelsToMigrateDescription": "變更儲存位置前請先下載至少一個模型。",
+      "migrated": "模型已成功移動",
+      "migrationFailed": "遷移失敗",
+      "migrationFailedGeneric": "遷移模型失敗",
+      "migrationConnectionLost": "遷移期間連線中斷"
+    }
+  }
+}

app/src/lib/api/client.ts

@@ -17,6 +17,7 @@ import type {
   HistoryResponse,
   ModelDownloadRequest,
   ModelStatusListResponse,
+  PresetVoice,
   ProfileSampleResponse,
   StoryCreate,
   StoryDetailResponse,
@@ -32,8 +33,24 @@ import type {
   TranscriptionResponse,
   VoiceProfileCreate,
   VoiceProfileResponse,
+  WhisperModelSize,
 } from './types';
 
+function formatErrorDetail(detail: unknown, fallback: string): string {
+  if (typeof detail === 'string') return detail;
+  if (Array.isArray(detail)) {
+    return detail
+      .map((e: Record<string, unknown>) => e.msg || e.message || JSON.stringify(e))
+      .join('; ');
+  }
+  if (detail && typeof detail === 'object') {
+    const obj = detail as Record<string, unknown>;
+    if (typeof obj.message === 'string') return obj.message;
+    return JSON.stringify(detail);
+  }
+  return fallback;
+}
+
 class ApiClient {
   private getBaseUrl(): string {
     const serverUrl = useServerStore.getState().serverUrl;
@@ -54,7 +71,7 @@ class ApiClient {
       const error = await response.json().catch(() => ({
         detail: response.statusText,
       }));
-      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+      throw new Error(formatErrorDetail(error.detail, `HTTP error! status: ${response.status}`));
     }
 
     return response.json();
@@ -81,6 +98,10 @@ class ApiClient {
     return this.request<VoiceProfileResponse>(`/profiles/${profileId}`);
   }
 
+  async listPresetVoices(engine: string): Promise<{ engine: string; voices: PresetVoice[] }> {
+    return this.request<{ engine: string; voices: PresetVoice[] }>(`/profiles/presets/${engine}`);
+  }
+
   async updateProfile(profileId: string, data: VoiceProfileCreate): Promise<VoiceProfileResponse> {
     return this.request<VoiceProfileResponse>(`/profiles/${profileId}`, {
       method: 'PUT',
@@ -113,7 +134,7 @@ class ApiClient {
       const error = await response.json().catch(() => ({
         detail: response.statusText,
       }));
-      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+      throw new Error(formatErrorDetail(error.detail, `HTTP error! status: ${response.status}`));
     }
 
     return response.json();
@@ -147,7 +168,7 @@ class ApiClient {
       const error = await response.json().catch(() => ({
         detail: response.statusText,
       }));
-      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+      throw new Error(formatErrorDetail(error.detail, `HTTP error! status: ${response.status}`));
     }
 
     return response.blob();
@@ -167,7 +188,7 @@ class ApiClient {
       const error = await response.json().catch(() => ({
         detail: response.statusText,
       }));
-      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+      throw new Error(formatErrorDetail(error.detail, `HTTP error! status: ${response.status}`));
     }
 
     return response.json();
@@ -187,7 +208,7 @@ class ApiClient {
       const error = await response.json().catch(() => ({
         detail: response.statusText,
       }));
-      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+      throw new Error(formatErrorDetail(error.detail, `HTTP error! status: ${response.status}`));
     }
 
     return response.json();
@@ -213,6 +234,12 @@ class ApiClient {
     });
   }
 
+  async cancelGeneration(generationId: string): Promise<{ message: string }> {
+    return this.request<{ message: string }>(`/generate/${generationId}/cancel`, {
+      method: 'POST',
+    });
+  }
+
   async regenerateGeneration(generationId: string): Promise<GenerationResponse> {
     return this.request<GenerationResponse>(`/generate/${generationId}/regenerate`, {
       method: 'POST',
@@ -249,6 +276,12 @@ class ApiClient {
     });
   }
 
+  async clearFailedGenerations(): Promise<{ deleted: number }> {
+    return this.request<{ deleted: number }>(`/history/failed`, {
+      method: 'DELETE',
+    });
+  }
+
   async exportGeneration(generationId: string): Promise<Blob> {
     const url = `${this.getBaseUrl()}/history/${generationId}/export`;
     const response = await fetch(url);
@@ -257,7 +290,7 @@ class ApiClient {
       const error = await response.json().catch(() => ({
         detail: response.statusText,
       }));
-      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+      throw new Error(formatErrorDetail(error.detail, `HTTP error! status: ${response.status}`));
     }
 
     return response.blob();
@@ -271,7 +304,7 @@ class ApiClient {
       const error = await response.json().catch(() => ({
         detail: response.statusText,
       }));
-      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+      throw new Error(formatErrorDetail(error.detail, `HTTP error! status: ${response.status}`));
     }
 
     return response.blob();
@@ -297,7 +330,7 @@ class ApiClient {
       const error = await response.json().catch(() => ({
         detail: response.statusText,
       }));
-      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+      throw new Error(formatErrorDetail(error.detail, `HTTP error! status: ${response.status}`));
     }
 
     return response.json();
@@ -318,12 +351,19 @@ class ApiClient {
   }
 
   // Transcription
-  async transcribeAudio(file: File, language?: LanguageCode): Promise<TranscriptionResponse> {
+  async transcribeAudio(
+    file: File,
+    language?: LanguageCode,
+    model?: WhisperModelSize,
+  ): Promise<TranscriptionResponse> {
     const formData = new FormData();
     formData.append('file', file);
     if (language) {
       formData.append('language', language);
     }
+    if (model) {
+      formData.append('model', model);
+    }
 
     const url = `${this.getBaseUrl()}/transcribe`;
     const response = await fetch(url, {
@@ -335,7 +375,7 @@ class ApiClient {
       const error = await response.json().catch(() => ({
         detail: response.statusText,
       }));
-      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+      throw new Error(formatErrorDetail(error.detail, `HTTP error! status: ${response.status}`));
     }
 
     return response.json();
@@ -350,7 +390,9 @@ class ApiClient {
     return this.request<{ path: string }>('/models/cache-dir');
   }
 
-  async migrateModels(destination: string): Promise<{ source: string; destination: string }> {
+  async migrateModels(
+    destination: string,
+  ): Promise<{ source: string; destination: string; moved: number; errors: string[] }> {
     return this.request('/models/migrate', {
       method: 'POST',
       body: JSON.stringify({ destination }),
@@ -608,7 +650,7 @@ class ApiClient {
       const error = await response.json().catch(() => ({
         detail: response.statusText,
       }));
-      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+      throw new Error(formatErrorDetail(error.detail, `HTTP error! status: ${response.status}`));
     }
 
     return response.blob();
@@ -705,7 +747,7 @@ class ApiClient {
       const error = await response.json().catch(() => ({
         detail: response.statusText,
       }));
-      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+      throw new Error(formatErrorDetail(error.detail, `HTTP error! status: ${response.status}`));
     }
 
     return response.blob();

app/src/lib/api/types.ts

@@ -1,10 +1,17 @@
 // API Types matching backend Pydantic models
 import type { LanguageCode } from '@/lib/constants/languages';
 
+export type VoiceType = 'cloned' | 'preset' | 'designed';
+
 export interface VoiceProfileCreate {
   name: string;
   description?: string;
   language: LanguageCode;
+  voice_type?: VoiceType;
+  preset_engine?: string;
+  preset_voice_id?: string;
+  design_prompt?: string;
+  default_engine?: string;
 }
 
 export interface VoiceProfileResponse {
@@ -14,12 +21,24 @@ export interface VoiceProfileResponse {
   language: string;
   avatar_path?: string;
   effects_chain?: EffectConfig[];
+  voice_type: VoiceType;
+  preset_engine?: string;
+  preset_voice_id?: string;
+  design_prompt?: string;
+  default_engine?: string;
   generation_count: number;
   sample_count: number;
   created_at: string;
   updated_at: string;
 }
 
+export interface PresetVoice {
+  voice_id: string;
+  name: string;
+  gender: 'male' | 'female';
+  language: string;
+}
+
 export interface ProfileSampleCreate {
   reference_text: string;
 }
@@ -42,8 +61,15 @@ export interface GenerationRequest {
   text: string;
   language: LanguageCode;
   seed?: number;
-  model_size?: '1.7B' | '0.6B';
-  engine?: 'qwen' | 'luxtts' | 'chatterbox' | 'chatterbox_turbo';
+  model_size?: '1.7B' | '0.6B' | '1B' | '3B';
+  engine?:
+    | 'qwen'
+    | 'qwen_custom_voice'
+    | 'luxtts'
+    | 'chatterbox'
+    | 'chatterbox_turbo'
+    | 'tada'
+    | 'kokoro';
   instruct?: string;
   max_chunk_chars?: number;
   crossfade_ms?: number;
@@ -73,7 +99,7 @@ export interface GenerationResponse {
   instruct?: string;
   engine?: string;
   model_size?: string;
-  status: 'generating' | 'completed' | 'failed';
+  status: 'loading_model' | 'generating' | 'completed' | 'failed';
   error?: string;
   is_favorited?: boolean;
   created_at: string;
@@ -99,8 +125,11 @@ export interface HistoryListResponse {
   total: number;
 }
 
+export type WhisperModelSize = 'base' | 'small' | 'medium' | 'large' | 'turbo';
+
 export interface TranscriptionRequest {
   language?: LanguageCode;
+  model?: WhisperModelSize;
 }
 
 export interface TranscriptionResponse {

app/src/lib/constants/languages.ts

@@ -5,6 +5,7 @@
  * LuxTTS is English-only.
  * Chatterbox Multilingual supports 23 languages.
  * Chatterbox Turbo is English-only.
+ * Kokoro supports 8 languages.
  */
 
 /** All languages that any engine supports. */
@@ -66,6 +67,9 @@ export const ENGINE_LANGUAGES: Record<string, readonly LanguageCode[]> = {
     'zh',
   ],
   chatterbox_turbo: ['en'],
+  tada: ['en', 'ar', 'zh', 'de', 'es', 'fr', 'it', 'ja', 'pl', 'pt'],
+  kokoro: ['en', 'es', 'fr', 'hi', 'it', 'pt', 'ja', 'zh'],
+  qwen_custom_voice: ['zh', 'en', 'ja', 'ko', 'de', 'fr', 'ru', 'pt', 'es', 'it'],
 } as const;
 
 /** Helper: get language options for a given engine. */

app/src/lib/hooks/useGenerationForm.ts

@@ -10,14 +10,25 @@ import { useGeneration } from '@/lib/hooks/useGeneration';
 import { useModelDownloadToast } from '@/lib/hooks/useModelDownloadToast';
 import { useGenerationStore } from '@/stores/generationStore';
 import { useServerStore } from '@/stores/serverStore';
+import { useUIStore } from '@/stores/uiStore';
 
 const generationSchema = z.object({
   text: z.string().min(1, '').max(50000),
   language: z.enum(LANGUAGE_CODES as [LanguageCode, ...LanguageCode[]]),
   seed: z.number().int().optional(),
-  modelSize: z.enum(['1.7B', '0.6B']).optional(),
+  modelSize: z.enum(['1.7B', '0.6B', '1B', '3B']).optional(),
   instruct: z.string().max(500).optional(),
-  engine: z.enum(['qwen', 'luxtts', 'chatterbox', 'chatterbox_turbo']).optional(),
+  engine: z
+    .enum([
+      'qwen',
+      'qwen_custom_voice',
+      'luxtts',
+      'chatterbox',
+      'chatterbox_turbo',
+      'tada',
+      'kokoro',
+    ])
+    .optional(),
 });
 
 export type GenerationFormValues = z.infer<typeof generationSchema>;
@@ -35,6 +46,7 @@ export function useGenerationForm(options: UseGenerationFormOptions = {}) {
   const maxChunkChars = useServerStore((state) => state.maxChunkChars);
   const crossfadeMs = useServerStore((state) => state.crossfadeMs);
   const normalizeAudio = useServerStore((state) => state.normalizeAudio);
+  const selectedEngine = useUIStore((state) => state.selectedEngine);
   const [downloadingModelName, setDownloadingModelName] = useState<string | null>(null);
   const [downloadingDisplayName, setDownloadingDisplayName] = useState<string | null>(null);
 
@@ -52,7 +64,7 @@ export function useGenerationForm(options: UseGenerationFormOptions = {}) {
       seed: undefined,
       modelSize: '1.7B',
       instruct: '',
-      engine: 'qwen',
+      engine: (selectedEngine as GenerationFormValues['engine']) || 'qwen',
       ...options.defaultValues,
     },
   });
@@ -79,7 +91,15 @@ export function useGenerationForm(options: UseGenerationFormOptions = {}) {
             ? 'chatterbox-tts'
             : engine === 'chatterbox_turbo'
               ? 'chatterbox-turbo'
-              : `qwen-tts-${data.modelSize}`;
+              : engine === 'tada'
+                ? data.modelSize === '3B'
+                  ? 'tada-3b-ml'
+                  : 'tada-1b'
+                : engine === 'kokoro'
+                  ? 'kokoro'
+                  : engine === 'qwen_custom_voice'
+                    ? `qwen-custom-voice-${data.modelSize}`
+                    : `qwen-tts-${data.modelSize}`;
       const displayName =
         engine === 'luxtts'
           ? 'LuxTTS'
@@ -87,9 +107,19 @@ export function useGenerationForm(options: UseGenerationFormOptions = {}) {
             ? 'Chatterbox TTS'
             : engine === 'chatterbox_turbo'
               ? 'Chatterbox Turbo'
-              : data.modelSize === '1.7B'
-                ? 'Qwen TTS 1.7B'
-                : 'Qwen TTS 0.6B';
+              : engine === 'tada'
+                ? data.modelSize === '3B'
+                  ? 'TADA 3B Multilingual'
+                  : 'TADA 1B'
+                : engine === 'kokoro'
+                  ? 'Kokoro 82M'
+                  : engine === 'qwen_custom_voice'
+                    ? data.modelSize === '1.7B'
+                      ? 'Qwen CustomVoice 1.7B'
+                      : 'Qwen CustomVoice 0.6B'
+                    : data.modelSize === '1.7B'
+                      ? 'Qwen TTS 1.7B'
+                      : 'Qwen TTS 0.6B';
 
       // Check if model needs downloading
       try {
@@ -104,7 +134,11 @@ export function useGenerationForm(options: UseGenerationFormOptions = {}) {
         console.error('Failed to check model status:', error);
       }
 
-      const isQwen = engine === 'qwen';
+      const hasModelSizes =
+        engine === 'qwen' || engine === 'qwen_custom_voice' || engine === 'tada';
+      // Only Qwen CustomVoice actually honors the instruct kwarg at model level.
+      // Base Qwen3-TTS accepts the kwarg but ignores it.
+      const supportsInstruct = engine === 'qwen_custom_voice';
       const effectsChain = options.getEffectsChain?.();
       // This now returns immediately with status="generating"
       const result = await generation.mutateAsync({
@@ -112,9 +146,9 @@ export function useGenerationForm(options: UseGenerationFormOptions = {}) {
         text: data.text,
         language: data.language,
         seed: data.seed,
-        model_size: isQwen ? data.modelSize : undefined,
+        model_size: hasModelSizes ? data.modelSize : undefined,
         engine,
-        instruct: isQwen ? data.instruct || undefined : undefined,
+        instruct: supportsInstruct ? data.instruct || undefined : undefined,
         max_chunk_chars: maxChunkChars,
         crossfade_ms: crossfadeMs,
         normalize: normalizeAudio,

app/src/lib/hooks/useGenerationProgress.ts

@@ -8,7 +8,7 @@ import { useServerStore } from '@/stores/serverStore';
 
 interface GenerationStatusEvent {
   id: string;
-  status: 'generating' | 'completed' | 'failed' | 'not_found';
+  status: 'loading_model' | 'generating' | 'completed' | 'failed' | 'not_found';
   duration?: number;
   error?: string;
 }
@@ -75,8 +75,8 @@ export function useGenerationProgress() {
             currentSources.delete(id);
             removePendingGeneration(id);
 
-            // Refresh history to pick up the completed generation
-            queryClient.invalidateQueries({ queryKey: ['history'] });
+            // Refetch history to pick up the completed generation
+            queryClient.refetchQueries({ queryKey: ['history'] });
 
             // If this generation was queued for a story, add it now
             const storyId = removePendingStoryAdd(id);
@@ -120,7 +120,7 @@ export function useGenerationProgress() {
             removePendingGeneration(id);
             removePendingStoryAdd(id);
 
-            queryClient.invalidateQueries({ queryKey: ['history'] });
+            queryClient.refetchQueries({ queryKey: ['history'] });
 
             toast({
               title: data.status === 'not_found' ? 'Generation not found' : 'Generation failed',
@@ -134,11 +134,12 @@ export function useGenerationProgress() {
       };
 
       source.onerror = () => {
-        // EventSource auto-reconnects, but if we get repeated errors
-        // just clean up
+        // SSE connection dropped — clean up and refresh history so any
+        // completed/failed generation still appears in the list
         source.close();
         currentSources.delete(id);
         removePendingGeneration(id);
+        queryClient.refetchQueries({ queryKey: ['history'] });
       };
 
       currentSources.set(id, source);

app/src/lib/hooks/useHistory.ts

@@ -29,6 +29,17 @@ export function useDeleteGeneration() {
   });
 }
 
+export function useClearFailedGenerations() {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: () => apiClient.clearFailedGenerations(),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['history'] });
+    },
+  });
+}
+
 export function useExportGeneration() {
   const platform = usePlatform();
 

app/src/lib/hooks/useModelDownloadToast.tsx

@@ -131,7 +131,8 @@ export function useModelDownloadToast({
                 )}
               </div>
             ),
-            duration: progress.status === 'complete' || progress.status === 'error' ? 5000 : Infinity,
+            duration:
+              progress.status === 'complete' || progress.status === 'error' ? 5000 : Infinity,
           });
 
           // Close connection and dismiss toast on completion or error

app/src/lib/hooks/useSystemAudioCapture.ts

@@ -1,4 +1,4 @@
-import { useState, useRef, useCallback, useEffect } from 'react';
+import { useCallback, useEffect, useRef, useState } from 'react';
 import { usePlatform } from '@/platform/PlatformContext';
 
 interface UseSystemAudioCaptureOptions {
@@ -26,8 +26,24 @@ export function useSystemAudioCapture({
 
   // Check if system audio capture is supported
   useEffect(() => {
-    const supported = platform.audio.isSystemAudioSupported();
-    setIsSupported(supported);
+    let isActive = true;
+
+    void platform.audio
+      .isSystemAudioSupported()
+      .then((supported) => {
+        if (isActive) {
+          setIsSupported(supported);
+        }
+      })
+      .catch(() => {
+        if (isActive) {
+          setIsSupported(false);
+        }
+      });
+
+    return () => {
+      isActive = false;
+    };
   }, [platform]);
 
   const startRecording = useCallback(async () => {
@@ -94,15 +110,13 @@ export function useSystemAudioCapture({
       const blob = await platform.audio.stopSystemAudioCapture();
 
       // Pass the actual recorded duration
-      const recordedDuration = startTimeRef.current 
-        ? (Date.now() - startTimeRef.current) / 1000 
+      const recordedDuration = startTimeRef.current
+        ? (Date.now() - startTimeRef.current) / 1000
         : undefined;
       onRecordingComplete?.(blob, recordedDuration);
     } catch (err) {
       const errorMessage =
-        err instanceof Error
-          ? err.message
-          : 'Failed to stop system audio capture.';
+        err instanceof Error ? err.message : 'Failed to stop system audio capture.';
       setError(errorMessage);
     }
   }, [isRecording, onRecordingComplete, platform]);

app/src/lib/hooks/useTranscription.ts

@@ -1,10 +1,18 @@
 import { useMutation } from '@tanstack/react-query';
 import { apiClient } from '@/lib/api/client';
+import type { WhisperModelSize } from '@/lib/api/types';
 import type { LanguageCode } from '@/lib/constants/languages';
 
 export function useTranscription() {
   return useMutation({
-    mutationFn: ({ file, language }: { file: File; language?: LanguageCode }) =>
-      apiClient.transcribeAudio(file, language),
+    mutationFn: ({
+      file,
+      language,
+      model,
+    }: {
+      file: File;
+      language?: LanguageCode;
+      model?: WhisperModelSize;
+    }) => apiClient.transcribeAudio(file, language, model),
   });
 }

app/src/lib/queryClient.ts

@@ -0,0 +1,19 @@
+import { QueryClient } from '@tanstack/react-query';
+
+/**
+ * Shared QueryClient instance used across the app.
+ *
+ * Extracted into its own side-effect-free module so it can be imported from
+ * both the React bootstrap (main.tsx) and non-React code (stores, utilities)
+ * without pulling in ReactDOM or other bootstrap side effects.
+ */
+export const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      staleTime: 1000 * 60 * 5, // 5 minutes
+      gcTime: 1000 * 60 * 10, // 10 minutes (formerly cacheTime)
+      retry: 1,
+      refetchOnWindowFocus: false,
+    },
+  },
+});

app/src/lib/utils/format.ts

@@ -1,4 +1,6 @@
 import { formatDistance } from 'date-fns';
+import { ja, zhCN, zhTW } from 'date-fns/locale';
+import i18n from '@/i18n';
 
 export function formatDuration(seconds: number): string {
   const mins = Math.floor(seconds / 60);
@@ -6,15 +8,25 @@ export function formatDuration(seconds: number): string {
   return `${mins}:${secs.toString().padStart(2, '0')}`;
 }
 
+function getDateLocale() {
+  switch (i18n.language) {
+    case 'ja':
+      return ja;
+    case 'zh-CN':
+      return zhCN;
+    case 'zh-TW':
+      return zhTW;
+    default:
+      return undefined;
+  }
+}
+
 export function formatDate(date: string | Date): string {
-  // Parse the date string - if it doesn't have timezone info, treat it as UTC
   let dateObj: Date;
   if (typeof date === 'string') {
-    // If the string doesn't end with Z or have timezone offset, assume it's UTC
     const dateStr = date.trim();
     if (!dateStr.includes('Z') && !dateStr.match(/[+-]\d{2}:\d{2}$/)) {
-      // No timezone info, treat as UTC
-      dateObj = new Date(dateStr + 'Z');
+      dateObj = new Date(`${dateStr}Z`);
     } else {
       dateObj = new Date(dateStr);
     }
@@ -22,7 +34,10 @@ export function formatDate(date: string | Date): string {
     dateObj = date;
   }
 
-  return formatDistance(dateObj, new Date(), { addSuffix: true }).replace(/^about /i, '');
+  return formatDistance(dateObj, new Date(), {
+    addSuffix: true,
+    locale: getDateLocale(),
+  }).replace(/^about /i, '');
 }
 
 const ENGINE_DISPLAY_NAMES: Record<string, string> = {

app/src/lib/utils/parseChangelog.ts

@@ -0,0 +1,37 @@
+export interface ChangelogEntry {
+  version: string;
+  date: string | null;
+  body: string;
+}
+
+/**
+ * Parses a Keep-a-Changelog style markdown string into structured entries.
+ *
+ * Splits on `## [version]` headings and extracts the version + date from each.
+ * The body is the raw markdown between headings (trimmed), with the leading
+ * `# Changelog` title and trailing link references stripped.
+ */
+export function parseChangelog(raw: string): ChangelogEntry[] {
+  const entries: ChangelogEntry[] = [];
+
+  // Strip trailing link reference definitions (e.g. [0.1.0]: https://...)
+  const cleaned = raw.replace(/^\[[\w.]+\]:.*$/gm, '').trimEnd();
+
+  // Match `## [version]` or `## [version] - date`
+  const headingRe = /^## \[(.+?)\](?:\s*-\s*(.+))?$/gm;
+  const matches = [...cleaned.matchAll(headingRe)];
+
+  for (let i = 0; i < matches.length; i++) {
+    const match = matches[i];
+    const version = match[1];
+    const date = match[2]?.trim() || null;
+
+    const start = match.index! + match[0].length;
+    const end = i + 1 < matches.length ? matches[i + 1].index! : cleaned.length;
+    const body = cleaned.slice(start, end).trim();
+
+    entries.push({ version, date, body });
+  }
+
+  return entries;
+}

app/src/main.tsx

@@ -1,20 +1,11 @@
-import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
+import { QueryClientProvider } from '@tanstack/react-query';
 // import { ReactQueryDevtools } from '@tanstack/react-query-devtools';
 import React from 'react';
 import ReactDOM from 'react-dom/client';
 import App from './App';
+import './i18n';
 import './index.css';
-
-const queryClient = new QueryClient({
-  defaultOptions: {
-    queries: {
-      staleTime: 1000 * 60 * 5, // 5 minutes
-      gcTime: 1000 * 60 * 10, // 10 minutes (formerly cacheTime)
-      retry: 1,
-      refetchOnWindowFocus: false,
-    },
-  },
-});
+import { queryClient } from './lib/queryClient';
 
 ReactDOM.createRoot(document.getElementById('root')!).render(
   <React.StrictMode>

app/src/platform/PlatformContext.tsx

@@ -9,11 +9,7 @@ export interface PlatformProviderProps {
 }
 
 export function PlatformProvider({ platform, children }: PlatformProviderProps) {
-  return (
-    <PlatformContext.Provider value={platform}>
-      {children}
-    </PlatformContext.Provider>
-  );
+  return <PlatformContext.Provider value={platform}>{children}</PlatformContext.Provider>;
 }
 
 export function usePlatform(): Platform {

app/src/platform/types.ts

@@ -42,7 +42,7 @@ export interface AudioDevice {
 }
 
 export interface PlatformAudio {
-  isSystemAudioSupported(): boolean;
+  isSystemAudioSupported(): Promise<boolean>;
   startSystemAudioCapture(maxDurationSecs: number): Promise<void>;
   stopSystemAudioCapture(): Promise<Blob>;
   listOutputDevices(): Promise<AudioDevice[]>;
@@ -50,12 +50,18 @@ export interface PlatformAudio {
   stopPlayback(): void;
 }
 
+export interface ServerLogEntry {
+  stream: 'stdout' | 'stderr';
+  line: string;
+}
+
 export interface PlatformLifecycle {
   startServer(remote?: boolean, modelsDir?: string | null): Promise<string>;
   stopServer(): Promise<void>;
   restartServer(modelsDir?: string | null): Promise<string>;
   setKeepServerRunning(keep: boolean): Promise<void>;
   setupWindowCloseHandler(): Promise<void>;
+  subscribeToServerLogs(callback: (entry: ServerLogEntry) => void): () => void;
   onServerReady?: () => void;
 }
 

app/src/router.tsx

@@ -1,10 +1,22 @@
-import { createRootRoute, createRoute, createRouter, Outlet } from '@tanstack/react-router';
+import {
+  createRootRoute,
+  createRoute,
+  createRouter,
+  Outlet,
+  redirect,
+} from '@tanstack/react-router';
 import { AppFrame } from '@/components/AppFrame/AppFrame';
 import { AudioTab } from '@/components/AudioTab/AudioTab';
 import { EffectsTab } from '@/components/EffectsTab/EffectsTab';
 import { MainEditor } from '@/components/MainEditor/MainEditor';
 import { ModelsTab } from '@/components/ModelsTab/ModelsTab';
-import { ServerTab } from '@/components/ServerTab/ServerTab';
+import { AboutPage } from '@/components/ServerTab/AboutPage';
+import { ChangelogPage } from '@/components/ServerTab/ChangelogPage';
+import { GeneralPage } from '@/components/ServerTab/GeneralPage';
+import { GenerationPage } from '@/components/ServerTab/GenerationPage';
+import { GpuPage } from '@/components/ServerTab/GpuPage';
+import { LogsPage } from '@/components/ServerTab/LogsPage';
+import { SettingsLayout } from '@/components/ServerTab/ServerTab';
 import { Sidebar } from '@/components/Sidebar';
 import { StoriesTab } from '@/components/StoriesTab/StoriesTab';
 import { Toaster } from '@/components/ui/toaster';
@@ -120,11 +132,57 @@ const modelsRoute = createRoute({
   component: ModelsTab,
 });
 
-// Server route
-const serverRoute = createRoute({
+// Settings layout route (parent for sub-tabs)
+const settingsRoute = createRoute({
+  getParentRoute: () => rootRoute,
+  path: '/settings',
+  component: SettingsLayout,
+});
+
+// Settings sub-routes
+const settingsGeneralRoute = createRoute({
+  getParentRoute: () => settingsRoute,
+  path: '/',
+  component: GeneralPage,
+});
+
+const settingsGenerationRoute = createRoute({
+  getParentRoute: () => settingsRoute,
+  path: '/generation',
+  component: GenerationPage,
+});
+
+const settingsGpuRoute = createRoute({
+  getParentRoute: () => settingsRoute,
+  path: '/gpu',
+  component: GpuPage,
+});
+
+const settingsChangelogRoute = createRoute({
+  getParentRoute: () => settingsRoute,
+  path: '/changelog',
+  component: ChangelogPage,
+});
+
+const settingsLogsRoute = createRoute({
+  getParentRoute: () => settingsRoute,
+  path: '/logs',
+  component: LogsPage,
+});
+
+const settingsAboutRoute = createRoute({
+  getParentRoute: () => settingsRoute,
+  path: '/about',
+  component: AboutPage,
+});
+
+// Redirect old /server path to /settings
+const serverRedirectRoute = createRoute({
   getParentRoute: () => rootRoute,
   path: '/server',
-  component: ServerTab,
+  beforeLoad: () => {
+    throw redirect({ to: '/settings' });
+  },
 });
 
 // Route tree
@@ -135,7 +193,15 @@ const routeTree = rootRoute.addChildren([
   audioRoute,
   effectsRoute,
   modelsRoute,
-  serverRoute,
+  settingsRoute.addChildren([
+    settingsGeneralRoute,
+    settingsGenerationRoute,
+    settingsGpuRoute,
+    settingsLogsRoute,
+    settingsChangelogRoute,
+    settingsAboutRoute,
+  ]),
+  serverRedirectRoute,
 ]);
 
 // Create router

app/src/stores/logStore.ts

@@ -0,0 +1,31 @@
+import { create } from 'zustand';
+import type { ServerLogEntry } from '@/platform/types';
+
+const MAX_LOG_ENTRIES = 2000;
+
+let nextLogEntryId = 0;
+
+export interface LogEntry extends ServerLogEntry {
+  id: number;
+  timestamp: number;
+}
+
+interface LogStore {
+  entries: LogEntry[];
+  addEntry: (entry: ServerLogEntry) => void;
+  clear: () => void;
+}
+
+export const useLogStore = create<LogStore>((set) => ({
+  entries: [],
+  addEntry: (entry) =>
+    set((state) => {
+      const newEntry: LogEntry = { ...entry, id: nextLogEntryId++, timestamp: Date.now() };
+      const entries = [...state.entries, newEntry];
+      if (entries.length > MAX_LOG_ENTRIES) {
+        return { entries: entries.slice(entries.length - MAX_LOG_ENTRIES) };
+      }
+      return { entries };
+    }),
+  clear: () => set({ entries: [] }),
+}));

app/src/stores/serverStore.ts

@@ -1,5 +1,6 @@
 import { create } from 'zustand';
 import { persist } from 'zustand/middleware';
+import { queryClient } from '@/lib/queryClient';
 
 interface ServerStore {
   serverUrl: string;
@@ -30,11 +31,25 @@ interface ServerStore {
   setCustomModelsDir: (dir: string | null) => void;
 }
 
+/**
+ * Invalidate all React Query caches so stale data from the previous
+ * server is not shown. Called when the server URL changes.
+ */
+function invalidateAllServerData() {
+  queryClient.invalidateQueries();
+}
+
 export const useServerStore = create<ServerStore>()(
   persist(
-    (set) => ({
+    (set, get) => ({
       serverUrl: 'http://127.0.0.1:17493',
-      setServerUrl: (url) => set({ serverUrl: url }),
+      setServerUrl: (url) => {
+        const prev = get().serverUrl;
+        set({ serverUrl: url });
+        if (url !== prev) {
+          invalidateAllServerData();
+        }
+      },
 
       isConnected: false,
       setIsConnected: (connected) => set({ isConnected: connected }),

app/src/stores/uiStore.ts

@@ -31,6 +31,10 @@ interface UIStore {
   selectedProfileId: string | null;
   setSelectedProfileId: (id: string | null) => void;
 
+  // Currently selected engine (synced from generation form)
+  selectedEngine: string;
+  setSelectedEngine: (engine: string) => void;
+
   // Selected voice in Voices tab inspector
   selectedVoiceId: string | null;
   setSelectedVoiceId: (id: string | null) => void;
@@ -59,6 +63,9 @@ export const useUIStore = create<UIStore>((set) => ({
   selectedProfileId: null,
   setSelectedProfileId: (id) => set({ selectedProfileId: id }),
 
+  selectedEngine: 'qwen',
+  setSelectedEngine: (engine) => set({ selectedEngine: engine }),
+
   selectedVoiceId: null,
   setSelectedVoiceId: (id) => set({ selectedVoiceId: id }),
 

app/tsconfig.node.json

@@ -6,5 +6,5 @@
     "moduleResolution": "bundler",
     "allowSyntheticDefaultImports": true
   },
-  "include": ["vite.config.ts"]
+  "include": ["vite.config.ts", "plugins/**/*.ts"]
 }

app/vite.config.ts

@@ -2,9 +2,10 @@ import path from 'node:path';
 import tailwindcss from '@tailwindcss/vite';
 import react from '@vitejs/plugin-react';
 import { defineConfig } from 'vite';
+import { changelogPlugin } from './plugins/changelog';
 
 export default defineConfig({
-  plugins: [tailwindcss(), react()],
+  plugins: [tailwindcss(), react(), changelogPlugin(path.resolve(__dirname, '..'))],
   resolve: {
     alias: {
       '@': path.resolve(__dirname, './src'),

backend/README.md

@@ -1,462 +1,135 @@
-# voicebox Backend
+# Voicebox Backend
 
-Production-quality FastAPI backend for Qwen3-TTS voice cloning.
+FastAPI server powering voice cloning, speech generation, and audio processing. Runs locally as a Tauri sidecar or standalone via `python -m backend.main`.
 
-## Features
+## Running
 
-- ✅ **Voice Profile Management** - Create, update, delete voice profiles with multi-sample support
-- ✅ **Voice Cloning** - Generate speech using voice profiles with caching
-- ✅ **Generation History** - Full history tracking with search and filtering
-- ✅ **Transcription** - Whisper-based audio transcription
-- ✅ **Multi-Sample Profiles** - Combine multiple reference samples for better quality
-- ✅ **Voice Prompt Caching** - Dual memory + disk caching for fast generation
-- ✅ **Audio Validation** - Automatic validation of reference audio quality
-- ✅ **Model Management** - Lazy loading and VRAM management
+```bash
+# Via justfile (recommended)
+just dev:server
+
+# Standalone
+python -m backend.main --host 127.0.0.1 --port 17493
+
+# With custom data directory
+python -m backend.main --data-dir /path/to/data
+```
+
+The server auto-initializes the SQLite database on first startup. Models are downloaded from HuggingFace on first use.
 
 ## Architecture
 
 ```
 backend/
-├── main.py              # FastAPI app with all routes
-├── models.py            # Pydantic request/response models
-├── platform_detect.py   # Platform detection for backend selection
-├── tts.py              # TTS backend abstraction (delegates to MLX or PyTorch)
-├── transcribe.py       # STT backend abstraction (delegates to MLX or PyTorch)
-├── backends/           # Backend implementations
-│   ├── __init__.py     # Backend factory and protocols
-│   ├── mlx_backend.py  # MLX backend (Apple Silicon)
-│   └── pytorch_backend.py  # PyTorch backend (Windows/Linux/Intel)
-├── profiles.py         # Voice profile CRUD
-├── history.py          # Generation history
-├── studio.py           # Audio editing (TODO)
-├── database.py         # SQLite ORM
-└── utils/
-    ├── audio.py        # Audio processing utilities
-    ├── cache.py        # Voice prompt caching
-    └── validation.py   # Input validation
+  app.py                  # FastAPI app factory, CORS, lifecycle events
+  main.py                 # Entry point (imports app, runs uvicorn)
+  config.py               # Data directory paths and configuration
+  models.py               # Pydantic request/response schemas
+  server.py               # Tauri sidecar launcher, parent-pid watchdog
+
+  routes/                 # Thin HTTP handlers — validation, delegation, response formatting
+  services/               # Business logic, CRUD, orchestration
+  backends/               # TTS/STT engine implementations (MLX, PyTorch, etc.)
+  database/               # ORM models, session management, migrations, seed data
+  utils/                  # Shared utilities (audio, effects, caching, progress tracking)
 ```
 
-### Backend Selection
-
-Voicebox automatically selects the best backend based on platform:
-
-- **Apple Silicon (M1/M2/M3)**: Uses MLX backend with native Metal acceleration (4-5x faster)
-- **Windows/Linux/Intel Mac**: Uses PyTorch backend (CUDA GPU if available, CPU fallback)
-
-The backend is detected at runtime via `platform_detect.py`. Both backends implement the same interface, so the API remains consistent across platforms.
-
-## API Endpoints
-
-### Health & Info
-
-#### `GET /`
-Root endpoint with version info.
-
-#### `GET /health`
-Health check with model status.
-
-**Response:**
-```json
-{
-  "status": "healthy",
-  "model_loaded": true,
-  "gpu_available": true,
-  "gpu_type": "Metal (Apple Silicon via MLX)",
-  "backend_type": "mlx",
-  "vram_used_mb": null
-}
-```
-
-**Backend Types:**
-- `"mlx"` - MLX backend (Apple Silicon with Metal acceleration)
-- `"pytorch"` - PyTorch backend (Windows/Linux/Intel Mac)
-
-### Voice Profiles
-
-**Note:** The database is automatically initialized when the server starts. No manual setup required.
-
-#### `POST /profiles`
-Create a new voice profile.
-
-**Request:**
-```json
-{
-  "name": "My Voice",
-  "description": "Optional description",
-  "language": "en"
-}
-```
-
-**Response:**
-```json
-{
-  "id": "uuid",
-  "name": "My Voice",
-  "description": "Optional description",
-  "language": "en",
-  "created_at": "2024-01-01T00:00:00Z",
-  "updated_at": "2024-01-01T00:00:00Z"
-}
-```
-
-#### `GET /profiles`
-List all voice profiles.
-
-#### `GET /profiles/{profile_id}`
-Get a specific profile.
-
-#### `PUT /profiles/{profile_id}`
-Update a profile.
-
-#### `DELETE /profiles/{profile_id}`
-Delete a profile and all associated samples.
-
-#### `POST /profiles/{profile_id}/samples`
-Add a sample to a profile.
-
-**Form Data:**
-- `file`: Audio file (WAV, MP3, etc.)
-- `reference_text`: Transcript of the audio
-
-**Response:**
-```json
-{
-  "id": "sample-uuid",
-  "profile_id": "profile-uuid",
-  "audio_path": "/path/to/sample.wav",
-  "reference_text": "This is my voice"
-}
-```
-
-#### `GET /profiles/{profile_id}/samples`
-List all samples for a profile.
-
-#### `DELETE /profiles/samples/{sample_id}`
-Delete a specific sample.
-
-### Generation
-
-#### `POST /generate`
-Generate speech from text using a voice profile.
-
-**Request:**
-```json
-{
-  "profile_id": "uuid",
-  "text": "Hello, this is a test.",
-  "language": "en",
-  "seed": 42
-}
-```
-
-**Response:**
-```json
-{
-  "id": "generation-uuid",
-  "profile_id": "profile-uuid",
-  "text": "Hello, this is a test.",
-  "language": "en",
-  "audio_path": "/path/to/audio.wav",
-  "duration": 2.5,
-  "seed": 42,
-  "created_at": "2024-01-01T00:00:00Z"
-}
-```
-
-### History
-
-#### `GET /history`
-List generation history with optional filters.
-
-**Query Parameters:**
-- `profile_id` (optional): Filter by profile
-- `search` (optional): Search in text content
-- `limit` (default: 50): Results per page
-- `offset` (default: 0): Pagination offset
-
-#### `GET /history/{generation_id}`
-Get a specific generation.
-
-#### `DELETE /history/{generation_id}`
-Delete a generation.
-
-#### `GET /history/stats`
-Get generation statistics.
-
-**Response:**
-```json
-{
-  "total_generations": 100,
-  "total_duration_seconds": 250.5,
-  "generations_by_profile": {
-    "profile-uuid-1": 50,
-    "profile-uuid-2": 50
-  }
-}
-```
-
-### Audio Files
-
-#### `GET /audio/{generation_id}`
-Download generated audio file.
-
-Returns WAV file with appropriate headers.
-
-### Transcription
-
-#### `POST /transcribe`
-Transcribe audio file to text.
-
-**Form Data:**
-- `file`: Audio file
-- `language` (optional): Language hint (en or zh)
-
-**Response:**
-```json
-{
-  "text": "Transcribed text here",
-  "duration": 5.5
-}
-```
-
-### Model Management
-
-#### `POST /models/load`
-Manually load TTS model.
-
-**Query Parameters:**
-- `model_size`: Model size (1.7B or 0.6B)
-
-#### `POST /models/unload`
-Unload TTS model to free memory.
-
-## Database Schema
-
-### profiles
-- `id`: UUID primary key
-- `name`: Profile name (unique)
-- `description`: Optional description
-- `language`: Language code (en/zh)
-- `created_at`: Creation timestamp
-- `updated_at`: Last update timestamp
-
-### profile_samples
-- `id`: UUID primary key
-- `profile_id`: Foreign key to profiles
-- `audio_path`: Path to audio file
-- `reference_text`: Transcript
-
-### generations
-- `id`: UUID primary key
-- `profile_id`: Foreign key to profiles
-- `text`: Generated text
-- `language`: Language code
-- `audio_path`: Path to audio file
-- `duration`: Duration in seconds
-- `seed`: Random seed (optional)
-- `created_at`: Creation timestamp
-
-### projects
-- `id`: UUID primary key
-- `name`: Project name
-- `data`: JSON data
-- `created_at`: Creation timestamp
-- `updated_at`: Last update timestamp
-
-## File Structure
+### Request flow
 
 ```
-data/
-├── profiles/
-│   └── {profile_id}/
-│       ├── {sample_id}.wav
-│       └── ...
-├── generations/
-│   └── {generation_id}.wav
-├── cache/
-│   └── {hash}.prompt
-├── projects/
-│   └── {project_id}.json
-└── voicebox.db
+HTTP request
+  -> routes/        (validate input, parse params)
+  -> services/      (business logic, database queries, orchestration)
+  -> backends/      (TTS/STT inference)
+  -> utils/         (audio processing, effects, caching)
 ```
 
-## Setup
+Route handlers are intentionally thin. They validate input, delegate to a service function, and format the response. All business logic lives in `services/`.
 
-### 1. Install Dependencies
-
-```bash
-pip install -r requirements.txt
-```
-
-**Note:** On Apple Silicon, also install MLX dependencies for faster inference:
-```bash
-pip install -r requirements-mlx.txt
-```
-
-### 2. Download Models (Automatic)
-
-The Qwen3-TTS models are automatically downloaded from HuggingFace Hub on first use, similar to how Whisper models work.
-
-**No manual download required!** The models will be cached locally after the first download.
-
-Available models:
-- **1.7B** (recommended): `Qwen/Qwen3-TTS-12Hz-1.7B-Base` (~4GB)
-- **0.6B** (faster): `Qwen/Qwen3-TTS-12Hz-0.6B-Base` (~2GB)
-
-**Note:** The first generation will take longer as the model downloads. Subsequent generations will use the cached model.
-
-#### Manual Download (Optional)
-
-If you prefer to download models manually or have limited internet during runtime:
-
-```bash
-# Install huggingface-cli
-pip install huggingface_hub
-
-# Download 1.7B model
-huggingface-cli download Qwen/Qwen3-TTS-12Hz-1.7B-Base
-
-# Or use Python
-python -c "from huggingface_hub import snapshot_download; snapshot_download('Qwen/Qwen3-TTS-12Hz-1.7B-Base')"
-```
-
-Models are cached in `~/.cache/huggingface/hub/` by default.
-
-### 4. Run Server
-
-```bash
-# Development (local only)
-python -m backend.main
-
-# Production (allow remote access)
-python -m backend.main --host 0.0.0.0 --port 8000
-```
-
-## Usage Examples
-
-The desktop app, web client, and current development workflow use `http://localhost:17493` by default.
-If you launch the backend manually with a different host or port, substitute that address in the examples below.
-
-### Creating a Voice Profile
-
-```bash
-# 1. Create profile
-curl -X POST http://localhost:17493/profiles \
-  -H "Content-Type: application/json" \
-  -d '{"name": "My Voice", "language": "en"}'
-
-# Response: {"id": "abc-123", ...}
-
-# 2. Add sample
-curl -X POST http://localhost:17493/profiles/abc-123/samples \
-  -F "file=@sample.wav" \
-  -F "reference_text=This is my voice sample"
-```
-
-### Generating Speech
+### Key modules
+
+**services/generation.py** -- Single `run_generation()` function that handles all three generation modes (generate, retry, regenerate). Manages model loading, voice prompt creation, chunked inference, normalization, effects, and version persistence.
+
+**services/task_queue.py** -- Serial generation queue. Ensures only one GPU inference runs at a time. Background tasks are tracked to prevent garbage collection.
+
+**backends/__init__.py** -- Protocol definitions (`TTSBackend`, `STTBackend`), model config registry, and factory functions. Adding a new engine means implementing the protocol and registering a config entry.
+
+**backends/base.py** -- Shared utilities used across all engine implementations: HuggingFace cache checks, device detection, voice prompt combination, progress tracking.
+
+**database/** -- SQLAlchemy ORM models with a re-exporting `__init__.py` for backward compatibility. Migrations run automatically on startup.
+
+### Backend selection
+
+The server detects the best inference backend at startup:
+
+| Platform | Backend | Acceleration |
+|----------|---------|-------------|
+| macOS (Apple Silicon) | MLX | Metal / Neural Engine |
+| Windows / Linux (NVIDIA) | PyTorch | CUDA |
+| Linux (AMD) | PyTorch | ROCm |
+| Intel Arc | PyTorch | IPEX / XPU |
+| Windows (any GPU) | PyTorch | DirectML |
+| Any | PyTorch | CPU fallback |
+
+Detection is handled by `utils/platform_detect.py`. Both backends implement the same `TTSBackend` protocol, so the API layer is engine-agnostic.
+
+## API
+
+90 endpoints organized by domain. Full interactive documentation available at `http://localhost:17493/docs` when the server is running.
+
+| Domain | Prefix | Description |
+|--------|--------|-------------|
+| Health | `/`, `/health` | Server status, GPU info, filesystem checks |
+| Profiles | `/profiles` | Voice profile CRUD, samples, avatars, import/export |
+| Channels | `/channels` | Audio channel management and voice assignment |
+| Generation | `/generate` | TTS generation, retry, regenerate, status SSE |
+| History | `/history` | Generation history, search, favorites, export |
+| Transcription | `/transcribe` | Whisper-based audio-to-text |
+| Stories | `/stories` | Multi-track timeline editor, audio export |
+| Effects | `/effects` | Effect presets, preview, version management |
+| Audio | `/audio`, `/samples` | Audio file serving |
+| Models | `/models` | Load, unload, download, migrate, status |
+| Tasks | `/tasks`, `/cache` | Active task tracking, cache management |
+| CUDA | `/backend/cuda-*` | CUDA binary download and management |
+
+### Quick examples
 
 ```bash
+# Generate speech
 curl -X POST http://localhost:17493/generate \
   -H "Content-Type: application/json" \
-  -d '{
-    "profile_id": "abc-123",
-    "text": "Hello, this is a test.",
-    "language": "en",
-    "seed": 42
-  }'
+  -d '{"text": "Hello world", "profile_id": "...", "language": "en"}'
 
-# Response: {"id": "gen-456", "audio_path": "/path/to/audio.wav", ...}
+# List profiles
+curl http://localhost:17493/profiles
 
-# Download audio
-curl http://localhost:17493/audio/gen-456 -o output.wav
+# Stream generation status (SSE)
+curl http://localhost:17493/generate/{id}/status
 ```
 
-### Transcribing Audio
+## Data directory
+
+```
+{data_dir}/
+  voicebox.db             # SQLite database
+  profiles/{id}/          # Voice samples per profile
+  generations/            # Generated audio files
+  cache/                  # Voice prompt cache (memory + disk)
+  backends/               # Downloaded CUDA binary (if applicable)
+```
+
+Default location is the OS-specific app data directory. Override with `--data-dir` or the `VOICEBOX_DATA_DIR` environment variable.
+
+## Code quality
+
+Linting and formatting are enforced by [ruff](https://docs.astral.sh/ruff/), configured in `pyproject.toml`. See `STYLE_GUIDE.md` for conventions.
 
 ```bash
-curl -X POST http://localhost:17493/transcribe \
-  -F "file=@audio.wav" \
-  -F "language=en"
-
-# Response: {"text": "Transcribed text", "duration": 5.5}
+just check-python       # lint + format check
+just fix-python         # auto-fix lint issues + reformat
+just test               # run pytest
 ```
 
-## Advanced Features
+## Dependencies
 
-### Multi-Sample Profiles
-
-Add multiple samples to a profile for better quality:
-
-```bash
-# Add first sample
-curl -X POST http://localhost:17493/profiles/abc-123/samples \
-  -F "file=@sample1.wav" \
-  -F "reference_text=First sample"
-
-# Add second sample
-curl -X POST http://localhost:17493/profiles/abc-123/samples \
-  -F "file=@sample2.wav" \
-  -F "reference_text=Second sample"
-
-# Generation will automatically combine all samples
-```
-
-### Voice Prompt Caching
-
-Voice prompts are automatically cached for faster generation:
-- First generation: ~5-10 seconds (creates prompt)
-- Subsequent generations: ~1-2 seconds (uses cached prompt)
-
-Cache is stored in `data/cache/` and persists across server restarts.
-
-### VRAM Management
-
-Models are lazy-loaded and can be manually unloaded:
-
-```bash
-# Unload TTS model
-curl -X POST http://localhost:17493/models/unload
-
-# Load specific model size
-curl -X POST "http://localhost:17493/models/load?model_size=0.6B"
-```
-
-## Error Handling
-
-All endpoints return proper HTTP status codes:
-
-- `200 OK`: Success
-- `400 Bad Request`: Invalid input
-- `404 Not Found`: Resource not found
-- `500 Internal Server Error`: Server error
-
-Error responses include details:
-
-```json
-{
-  "detail": "Profile not found"
-}
-```
-
-## Performance Tips
-
-1. **Use multi-sample profiles** - Better quality than single sample
-2. **Let caching work** - Voice prompts are cached automatically
-3. **Use 0.6B model on CPU** - Faster than 1.7B with acceptable quality
-4. **Use 1.7B model on GPU** - Best quality, still fast
-5. **Unload Whisper after transcription** - Frees VRAM for TTS
-
-## TODO
-
-- [ ] WebSocket support for generation progress
-- [ ] Batch generation endpoint
-- [ ] Audio effects (M3GAN, etc.)
-- [ ] Voice design (text-to-voice)
-- [ ] Audio studio timeline features
-- [ ] Project management
-- [ ] Authentication & rate limiting
-- [ ] Export/import profiles
-
-## License
-
-See main project LICENSE.
+Runtime dependencies are in `requirements.txt`. macOS-only MLX dependencies are in `requirements-mlx.txt`. Dev tools (ruff, pytest) are installed automatically by `just setup-python`.

backend/STYLE_GUIDE.md

@@ -0,0 +1,404 @@
+# Python Style Guide
+
+Target: **Python 3.12+** | Formatter/Linter: **Ruff** | Config: `backend/pyproject.toml`
+
+This guide codifies the conventions used across the backend, and prescribes the target style for code written during the refactor (Phases 3-6). Existing code should be migrated incrementally -- don't reformat entire files in unrelated PRs.
+
+---
+
+## Formatting
+
+Enforced by `ruff format` (Black-compatible).
+
+- **Line length**: 120 characters.
+- **Indent**: 4 spaces. No tabs.
+- **Trailing commas**: Required on multi-line function signatures, arguments, collections.
+- **Quotes**: Double quotes (`"`) for strings. Single quotes are acceptable in f-string expressions and dict keys inside f-strings where avoiding escapes improves readability.
+
+Run: `ruff format backend/`
+
+---
+
+## Imports
+
+Enforced by ruff's `isort` rules (rule set `I`).
+
+**Grouping** -- three blocks separated by a blank line:
+
+```python
+import asyncio                          # 1. stdlib
+from pathlib import Path
+
+import numpy as np                      # 2. third-party
+from fastapi import APIRouter, HTTPException
+from sqlalchemy.orm import Session
+
+from backend.config import get_data_dir  # 3. local (absolute)
+from .database import get_db            #    or relative
+```
+
+**Rules:**
+- Within the `backend` package, use **relative imports** for sibling/child modules: `from .database import get_db`, `from ..utils.audio import load_audio`.
+- Absolute imports are fine for top-level references from entry points (`main.py`, `server.py`).
+- Never use wildcard imports (`from module import *`).
+- One import per line for `from X import Y` when there are 4+ names; below that, comma-separated is fine.
+- **Lazy imports** are acceptable for heavy dependencies (torch, transformers, mlx) inside functions to reduce startup time. Add a comment: `# lazy: heavy import`.
+
+---
+
+## Type Annotations
+
+Python 3.12 means we use **built-in generics and union syntax natively**. No `from __future__ import annotations`, no `typing.List`/`typing.Dict`.
+
+```python
+# Yes
+def process(items: list[str], config: dict[str, int] | None = None) -> tuple[int, str]: ...
+
+# No
+from typing import List, Dict, Optional, Tuple
+def process(items: List[str], config: Optional[Dict[str, int]] = None) -> Tuple[int, str]: ...
+```
+
+**What to annotate:**
+- All public function signatures (parameters + return type).
+- Private functions: parameters at minimum; return type encouraged.
+- Module-level variables: only when the type isn't obvious from the assignment.
+- Route handlers: parameters are annotated via FastAPI's dependency injection. Add explicit `-> SomeResponse` return types when the route doesn't use `response_model`.
+
+**Imports from `typing` that are still needed** (no built-in equivalent):
+`Literal`, `TypeAlias`, `Protocol`, `runtime_checkable`, `Callable`, `Any`, `ClassVar`, `TypeVar`, `overload`, `TYPE_CHECKING`.
+
+Use `collections.abc` for abstract types: `Sequence`, `Mapping`, `Iterable`, `Iterator`, `Generator`.
+
+---
+
+## Naming
+
+| Thing | Convention | Example |
+|-------|-----------|---------|
+| Module | `snake_case` | `task_queue.py` |
+| Class | `PascalCase` | `ProgressManager` |
+| Function / method | `snake_case` | `create_profile` |
+| Variable | `snake_case` | `sample_rate` |
+| Constant | `UPPER_SNAKE_CASE` | `DEFAULT_SAMPLE_RATE` |
+| Private | `_leading_underscore` | `_generation_queue` |
+| Type alias | `PascalCase` | `EffectChain = list[dict[str, Any]]` |
+
+**Specific conventions:**
+- Database ORM models imported with `DB` prefix alias: `from .database import VoiceProfile as DBVoiceProfile`.
+- Pydantic models use descriptive suffixes: `VoiceProfileCreate`, `VoiceProfileResponse`, `GenerationRequest`.
+- Backend classes use engine-name prefix: `MLXTTSBackend`, `PyTorchSTTBackend`.
+
+---
+
+## Docstrings
+
+**Google style**. Required on all public functions, classes, and modules.
+
+```python
+def combine_voice_prompts(
+    profile_dir: Path,
+    *,
+    target_sr: int = 24000,
+) -> tuple[np.ndarray, int]:
+    """Load and concatenate all voice prompt files for a profile.
+
+    Reads .wav/.mp3/.flac files from the profile directory, resamples to
+    the target sample rate, normalizes, and concatenates into a single array.
+
+    Args:
+        profile_dir: Path to the voice profile directory containing audio files.
+        target_sr: Target sample rate for the output. Defaults to 24000.
+
+    Returns:
+        Tuple of (concatenated audio array, sample rate).
+
+    Raises:
+        FileNotFoundError: If profile_dir does not exist.
+        ValueError: If no valid audio files are found.
+    """
+```
+
+**Short form** is fine for simple functions:
+
+```python
+def get_db_path() -> Path:
+    """Get the path to the SQLite database file."""
+```
+
+**When to skip**: Private helpers under ~5 lines where the name and signature make intent obvious.
+
+**Module docstrings**: A single sentence at the top of every file describing its purpose.
+
+```python
+"""Voice profile CRUD operations."""
+```
+
+---
+
+## Comments
+
+Comments explain **why**, not **what**. If the code needs a comment to explain what it does, the code should be rewritten to be clearer. The exceptions are non-obvious performance choices, external constraints, and concurrency/race-condition reasoning -- those always deserve a comment.
+
+### No section dividers
+
+Do not use ASCII dividers to create visual sections in files:
+
+```python
+# No -- any of these:
+# ============================================
+# GENERATION ENDPOINTS
+# ============================================
+
+# ---------------------------------------------------------------------------
+# Device detection
+# ---------------------------------------------------------------------------
+
+# --- Load model --------------------------------------------------
+```
+
+If a file needs section dividers to be navigable, the file is too long. Split it into modules. Within a function, if you need labeled sections to follow the logic, extract those sections into named functions.
+
+### Inline comments
+
+Inline comments (end-of-line) are fine when they add information the code can't express:
+
+```python
+# Yes -- explains a non-obvious constraint or gives context:
+audio, sr = load_audio(path, sr=24000)  # Qwen expects 24kHz mono
+_generation_queue: asyncio.Queue = None  # type: ignore  # initialized at startup
+"tauri://localhost",         # Tauri webview (macOS)
+
+# No -- restates the code:
+# Check if profile name already exists
+existing = db.query(DBVoiceProfile).filter_by(name=data.name).first()
+
+# Delete from database
+db.delete(sample)
+
+# Update fields
+profile.name = data.name
+```
+
+Delete comments that narrate what the next line of code obviously does. If the function name, variable name, or method call already communicates intent, the comment is noise.
+
+### Block comments
+
+Use block comments for **why** explanations -- constraints, workarounds, non-obvious decisions:
+
+```python
+# PyInstaller + multiprocessing: child processes re-execute the frozen binary
+# with internal arguments. freeze_support() handles this and exits early.
+multiprocessing.freeze_support()
+
+# Mark any stale "generating" records as failed -- these are leftovers
+# from a previous process that was killed mid-generation.
+db.query(Generation).filter_by(status="generating").update({"status": "failed"})
+```
+
+Keep block comments tight. Two to three lines is normal. If you need a paragraph, it probably belongs in the docstring or a design doc.
+
+### Linter/type-checker suppression
+
+Always add a reason after `noqa` and `type: ignore`:
+
+```python
+import intel_extension_for_pytorch  # noqa: F401 -- side-effect import enables XPU
+_queue: asyncio.Queue = None  # type: ignore[assignment]  # initialized at startup
+```
+
+Bare `# noqa` or `# type: ignore` with no explanation are not allowed.
+
+### TODO / FIXME
+
+Use sparingly. Every `TODO` must include a brief description of what needs doing. Don't use them as a substitute for tracking work properly:
+
+```python
+# TODO: replace with async SQLAlchemy once CRUD modules are migrated (Phase 5)
+result = await asyncio.to_thread(profiles.get_profile, profile_id, db)
+```
+
+Never commit `HACK`, `XXX`, or `FIXME` -- fix the problem or file an issue.
+
+### Commented-out code
+
+Delete it. That's what git is for. If you need to document that something was intentionally removed, a short tombstone comment is acceptable:
+
+```python
+# Removed config.json-only check -- too lenient, doesn't confirm weights exist.
+```
+
+---
+
+## Error Handling
+
+The refactor is standardizing on a **two-layer pattern**:
+
+### 1. Domain layer -- raise plain exceptions
+
+CRUD modules and services raise `ValueError`, `FileNotFoundError`, or (post-refactor) custom exceptions defined in `backend/errors.py`:
+
+```python
+# backend/errors.py  (to be created in Phase 4)
+class NotFoundError(Exception):
+    """Raised when a requested resource does not exist."""
+
+class ConflictError(Exception):
+    """Raised on uniqueness constraint violations."""
+```
+
+```python
+# In a service or CRUD module:
+raise NotFoundError(f"Profile {profile_id} not found")
+```
+
+### 2. Route layer -- translate to HTTPException
+
+Route handlers catch domain exceptions and convert:
+
+```python
+@router.post("/profiles")
+async def create_profile(data: VoiceProfileCreate, db: Session = Depends(get_db)):
+    try:
+        return await profiles.create_profile(data, db)
+    except ConflictError as e:
+        raise HTTPException(status_code=409, detail=str(e))
+```
+
+**Background tasks** catch `Exception` broadly, log with `logger.exception()`, and update the task status to `"failed"`.
+
+**Never**: silently swallow exceptions, use bare `except:`, or catch `BaseException`.
+
+---
+
+## Async
+
+### Rules for the refactor
+
+1. **Don't declare `async def` unless the function awaits something.** Several service modules still declare `async def` without awaiting -- these should be migrated to sync functions with `asyncio.to_thread()` at the route layer, or to real async SQLAlchemy.
+2. **CPU-bound work** (audio processing, numpy operations) goes through `asyncio.to_thread()`:
+   ```python
+   audio, sr = await asyncio.to_thread(load_audio, source_path)
+   ```
+3. **GPU-bound TTS inference** is serialized through the generation queue (`services/task_queue.py`). Never call a backend's `generate()` directly from a route handler.
+4. **Fire-and-forget tasks**: use `asyncio.create_task()` and track the task reference to prevent garbage collection:
+   ```python
+   task = asyncio.create_task(some_coro())
+   _background_tasks.add(task)
+   task.add_done_callback(_background_tasks.discard)
+   ```
+
+---
+
+## Logging
+
+Use the `logging` module. Not `print()`.
+
+```python
+import logging
+
+logger = logging.getLogger(__name__)
+
+logger.info("Loading model %s on %s", model_name, device)
+logger.warning("Cache miss for %s, downloading", repo_id)
+logger.exception("Generation %s failed")  # logs traceback automatically
+```
+
+**Rules:**
+- Use `%s`-style placeholders in log calls (not f-strings). This avoids formatting the string if the log level is filtered out.
+- Use `logger.exception()` inside `except` blocks -- it captures the traceback.
+- Logger name should be `__name__` (yields `backend.utils.audio`, etc.).
+- Existing `print()` calls should be migrated to logging as files are touched during the refactor.
+
+---
+
+## Constants
+
+- Define at **module level** in the file where they're primarily used.
+- Use `UPPER_SNAKE_CASE`.
+- Shared/cross-cutting constants (sample rates, file size limits, CORS origins) go in `backend/config.py` after Phase 6 consolidation.
+- Magic numbers in function bodies should be extracted to named constants:
+  ```python
+  # No
+  if len(audio) > 24000 * 60 * 10:
+
+  # Yes
+  MAX_AUDIO_DURATION_SAMPLES = SAMPLE_RATE * 60 * 10
+  if len(audio) > MAX_AUDIO_DURATION_SAMPLES:
+  ```
+
+---
+
+## Function Signatures
+
+- **Keyword-only arguments** (after `*`) for functions with 3+ parameters, especially when several share the same type:
+  ```python
+  def is_model_cached(
+      hf_repo: str,
+      *,
+      weight_extensions: tuple[str, ...] = (".safetensors", ".bin"),
+      required_files: list[str] | None = None,
+  ) -> bool:
+  ```
+- Parameters on **separate lines** when the signature exceeds ~100 characters or has 3+ params.
+- **Trailing comma** after the last parameter in multi-line signatures.
+- Default values inline with the parameter.
+
+---
+
+## String Formatting
+
+- **f-strings** for runtime string construction.
+- **`%s`-style** for `logging` calls (lazy evaluation).
+- **`.format()`**: avoid; f-strings are preferred.
+
+---
+
+## Testing
+
+Framework: **pytest** with `pytest-asyncio`.
+
+- Test files: `test_<module>.py` in `backend/tests/`.
+- Use `conftest.py` for shared fixtures (db sessions, test client, mock backends).
+- Group related tests in classes: `class TestProfileCRUD:`.
+- Use `@pytest.mark.asyncio` for async tests.
+- Use `@pytest.mark.parametrize` to reduce repetition.
+- Manual integration scripts stay in `tests/` but are clearly marked (filename prefix `manual_` or documented in `tests/README.md`).
+
+---
+
+## Project Layout
+
+```
+backend/
+  app.py              # FastAPI app factory, CORS, lifecycle events
+  main.py             # Entry point (imports app, runs uvicorn)
+  config.py           # Data directory paths
+  models.py           # Pydantic request/response schemas
+  server.py           # Tauri sidecar launcher, parent-pid watchdog
+  routes/             # Thin HTTP handlers (validation, delegation, response formatting)
+  services/           # Business logic, CRUD, orchestration
+  backends/           # TTS/STT engine implementations
+  database/           # ORM models, session management, migrations, seeds
+  utils/              # Shared utilities (audio, effects, caching, progress)
+  tests/              # pytest suite
+```
+
+---
+
+## Ruff Adoption
+
+`pyproject.toml` configures ruff for linting and formatting. Run:
+
+```bash
+# Lint (check)
+ruff check backend/
+
+# Lint (auto-fix)
+ruff check backend/ --fix
+
+# Format
+ruff format backend/
+```
+
+Introduce ruff fixes file-by-file as you touch them. Don't run `--fix` across the entire codebase in one shot -- that creates unreviewable diffs.

backend/__init__.py

@@ -1,3 +1,3 @@
 # Backend package
 
-__version__ = "0.2.0"
+__version__ = "0.4.4"

backend/app.py

@@ -0,0 +1,281 @@
+"""FastAPI application factory, middleware, and lifecycle events."""
+
+import asyncio
+import logging
+import os
+import sys
+from pathlib import Path
+
+
+class ColoredFormatter(logging.Formatter):
+    """Custom formatter to add colors matching uvicorn's style."""
+
+    COLORS = {
+        "DEBUG": "\033[36m",  # Cyan
+        "INFO": "\033[32m",  # Green
+        "WARNING": "\033[33m",  # Yellow
+        "ERROR": "\033[31m",  # Red
+        "CRITICAL": "\033[35m",  # Magenta
+    }
+    RESET = "\033[0m"
+
+    def format(self, record):
+        log_color = self.COLORS.get(record.levelname, self.RESET)
+        record.levelname = f"{log_color}{record.levelname}{self.RESET}"
+        return super().format(record)
+
+
+# Configure logging to match uvicorn's format with colors
+handler = logging.StreamHandler(sys.stderr)
+handler.setFormatter(ColoredFormatter("%(levelname)s:     %(message)s"))
+logging.basicConfig(
+    level=logging.INFO,
+    handlers=[handler],
+)
+
+logger = logging.getLogger(__name__)
+
+# AMD GPU environment variables must be set before torch import
+if not os.environ.get("HSA_OVERRIDE_GFX_VERSION"):
+    os.environ["HSA_OVERRIDE_GFX_VERSION"] = "10.3.0"
+if not os.environ.get("MIOPEN_LOG_LEVEL"):
+    os.environ["MIOPEN_LOG_LEVEL"] = "4"
+
+import torch
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from urllib.parse import quote
+
+from . import __version__, config, database
+from .services import tts, transcribe
+from .database import get_db
+from .utils.platform_detect import get_backend_type
+from .utils.progress import get_progress_manager
+from .services.task_queue import create_background_task, init_queue
+from .routes import register_routers
+
+
+def safe_content_disposition(disposition_type: str, filename: str) -> str:
+    """Build a Content-Disposition header safe for non-ASCII filenames.
+
+    Uses RFC 5987 ``filename*`` parameter so browsers can decode UTF-8
+    filenames while the ``filename`` fallback stays ASCII-only.
+    """
+    ascii_name = "".join(c for c in filename if c.isascii() and (c.isalnum() or c in " -_.")).strip() or "download"
+    utf8_name = quote(filename, safe="")
+    return f"{disposition_type}; filename=\"{ascii_name}\"; filename*=UTF-8''{utf8_name}"
+
+
+def create_app() -> FastAPI:
+    """Create and configure the FastAPI application."""
+    application = FastAPI(
+        title="voicebox API",
+        description="Production-quality Qwen3-TTS voice cloning API",
+        version=__version__,
+    )
+
+    _configure_cors(application)
+    register_routers(application)
+    _register_lifecycle(application)
+    _mount_frontend(application)
+
+    return application
+
+
+def _configure_cors(application: FastAPI) -> None:
+    """Set up CORS middleware with local-first defaults."""
+    default_origins = [
+        "http://localhost:5173",  # Vite dev server
+        "http://127.0.0.1:5173",
+        "http://localhost:17493",
+        "http://127.0.0.1:17493",
+        "tauri://localhost",  # Tauri webview (macOS)
+        "https://tauri.localhost",  # Tauri webview (Windows/Linux)
+        "http://tauri.localhost",  # Tauri webview (Windows, some builds)
+    ]
+    env_origins = os.environ.get("VOICEBOX_CORS_ORIGINS", "")
+    all_origins = default_origins + [o.strip() for o in env_origins.split(",") if o.strip()]
+
+    application.add_middleware(
+        CORSMiddleware,
+        allow_origins=all_origins,
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+
+
+def _mount_frontend(application: FastAPI) -> None:
+    """Serve the built web frontend when present (Docker / web deployment).
+
+    The Dockerfile copies the Vite build output to ``/app/frontend/``.  When
+    that directory exists we mount static assets and add a catch-all route so
+    the React SPA handles client-side routing.  In dev or API-only mode the
+    directory is absent and this function is a no-op.
+    """
+    frontend_dir = Path(__file__).resolve().parent.parent / "frontend"
+    if not frontend_dir.is_dir():
+        return
+
+    from fastapi.staticfiles import StaticFiles
+    from fastapi.responses import FileResponse
+
+    # Mount hashed assets (JS, CSS, images) that Vite places under /assets
+    assets_dir = frontend_dir / "assets"
+    if assets_dir.is_dir():
+        application.mount(
+            "/assets",
+            StaticFiles(directory=str(assets_dir)),
+            name="frontend-assets",
+        )
+
+    # SPA catch-all: serve files if they exist, otherwise index.html for
+    # client-side routes like /voices, /stories, /models, etc.
+    @application.get("/{full_path:path}")
+    async def serve_spa(full_path: str):
+        file_path = (frontend_dir / full_path).resolve()
+        # Guard against path traversal — only serve files inside frontend_dir
+        if full_path and file_path.is_file() and file_path.is_relative_to(frontend_dir):
+            return FileResponse(file_path)
+        return FileResponse(frontend_dir / "index.html", media_type="text/html")
+
+    logger.info("Frontend: serving SPA from %s", frontend_dir)
+
+
+def _get_gpu_status() -> str:
+    """Return a human-readable string describing GPU availability."""
+    backend_type = get_backend_type()
+    if torch.cuda.is_available():
+        from .backends.base import check_cuda_compatibility
+
+        device_name = torch.cuda.get_device_name(0)
+        compatible, _warning = check_cuda_compatibility()
+        is_rocm = hasattr(torch.version, "hip") and torch.version.hip is not None
+        if is_rocm:
+            label = f"ROCm ({device_name})"
+        else:
+            label = f"CUDA ({device_name})"
+        if not compatible:
+            label += " [UNSUPPORTED - see logs]"
+        return label
+    elif hasattr(torch.backends, "mps") and torch.backends.mps.is_available():
+        return "MPS (Apple Silicon)"
+    elif backend_type == "mlx":
+        return "Metal (Apple Silicon via MLX)"
+
+    # Intel XPU (Arc / Data Center) via IPEX
+    try:
+        import intel_extension_for_pytorch  # noqa: F401
+
+        if hasattr(torch, "xpu") and torch.xpu.is_available():
+            try:
+                xpu_name = torch.xpu.get_device_name(0)
+            except Exception:
+                xpu_name = "Intel GPU"
+            return f"XPU ({xpu_name})"
+    except ImportError:
+        pass
+
+    return "None (CPU only)"
+
+
+def _register_lifecycle(application: FastAPI) -> None:
+    """Attach startup and shutdown event handlers."""
+
+    @application.on_event("startup")
+    async def startup_event():
+        import platform
+        import sys
+
+        logger.info("Voicebox v%s starting up", __version__)
+        logger.info(
+            "Python %s on %s %s (%s)",
+            sys.version.split()[0],
+            platform.system(),
+            platform.release(),
+            platform.machine(),
+        )
+
+        database.init_db()
+
+        from .database.session import _db_path
+
+        logger.info("Database: %s", _db_path)
+        logger.info("Data directory: %s", config.get_data_dir())
+
+        init_queue()
+
+        # Mark stale "generating" records as failed -- leftovers from a killed process
+        from sqlalchemy import text as sa_text
+
+        db = next(get_db())
+        try:
+            result = db.execute(
+                sa_text(
+                    "UPDATE generations SET status = 'failed', "
+                    "error = 'Server was shut down during generation' "
+                    "WHERE status IN ('generating', 'loading_model')"
+                )
+            )
+            if result.rowcount > 0:
+                logger.info("Marked %d stale generation(s) as failed", result.rowcount)
+
+            from .database import VoiceProfile as DBVoiceProfile, Generation as DBGeneration
+
+            profile_count = db.query(DBVoiceProfile).count()
+            generation_count = db.query(DBGeneration).count()
+            logger.info("Profiles: %d, Generations: %d", profile_count, generation_count)
+
+            db.commit()
+        except Exception as e:
+            db.rollback()
+            logger.warning("Could not clean up stale generations: %s", e)
+        finally:
+            db.close()
+
+        backend_type = get_backend_type()
+        logger.info("Backend: %s", backend_type.upper())
+        logger.info("GPU: %s", _get_gpu_status())
+
+        # Warn if GPU architecture is not supported by this PyTorch build
+        from .backends.base import check_cuda_compatibility
+
+        _compatible, _cuda_warning = check_cuda_compatibility()
+        if not _compatible:
+            logger.warning("GPU COMPATIBILITY: %s", _cuda_warning)
+
+        from .services.cuda import check_and_update_cuda_binary
+
+        create_background_task(check_and_update_cuda_binary())
+
+        try:
+            progress_manager = get_progress_manager()
+            progress_manager._set_main_loop(asyncio.get_running_loop())
+        except Exception as e:
+            logger.warning("Could not initialize progress manager event loop: %s", e)
+
+        try:
+            from huggingface_hub import constants as hf_constants
+
+            cache_dir = Path(hf_constants.HF_HUB_CACHE)
+            cache_dir.mkdir(parents=True, exist_ok=True)
+            logger.info("Model cache: %s", cache_dir)
+        except Exception as e:
+            logger.warning("Could not create HuggingFace cache directory: %s", e)
+
+        logger.info("Ready")
+
+    @application.on_event("shutdown")
+    async def shutdown_event():
+        logger.info("Voicebox server shutting down...")
+        try:
+            tts.unload_tts_model()
+        except Exception:
+            logger.exception("Failed to unload TTS model")
+        try:
+            transcribe.unload_whisper_model()
+        except Exception:
+            logger.exception("Failed to unload Whisper model")
+
+
+app = create_app()

backend/backends/__init__.py

@@ -1,25 +1,73 @@
 """
 Backend abstraction layer for TTS and STT.
 
-Provides a unified interface for MLX and PyTorch backends.
+Provides a unified interface for MLX and PyTorch backends,
+and a model config registry that eliminates per-engine dispatch maps.
 """
 
+# Install HF compatibility patches before any backend imports transformers /
+# huggingface_hub. The module runs ``patch_transformers_mistral_regex`` at
+# import time, which wraps transformers' tokenizer load against the
+# unconditional HuggingFace metadata call that otherwise raises on
+# HF_HUB_OFFLINE=1 and on network failures.
+from ..utils import hf_offline_patch  # noqa: F401
+
 import threading
+from dataclasses import dataclass, field
 from typing import Protocol, Optional, Tuple, List
 from typing_extensions import runtime_checkable
 import numpy as np
 
-from ..platform_detect import get_backend_type
+from ..utils.platform_detect import get_backend_type
+
+LANGUAGE_CODE_TO_NAME = {
+    "zh": "chinese",
+    "en": "english",
+    "ja": "japanese",
+    "ko": "korean",
+    "de": "german",
+    "fr": "french",
+    "ru": "russian",
+    "pt": "portuguese",
+    "es": "spanish",
+    "it": "italian",
+}
+
+WHISPER_HF_REPOS = {
+    "base": "openai/whisper-base",
+    "small": "openai/whisper-small",
+    "medium": "openai/whisper-medium",
+    "large": "openai/whisper-large-v3",
+    "turbo": "openai/whisper-large-v3-turbo",
+}
+
+
+@dataclass
+class ModelConfig:
+    """Declarative config for a downloadable model variant."""
+
+    model_name: str  # e.g. "luxtts", "chatterbox-tts"
+    display_name: str  # e.g. "LuxTTS (Fast, CPU-friendly)"
+    engine: str  # e.g. "luxtts", "chatterbox"
+    hf_repo_id: str  # e.g. "YatharthS/LuxTTS"
+    model_size: str = "default"
+    size_mb: int = 0
+    needs_trim: bool = False
+    supports_instruct: bool = False
+    languages: list[str] = field(default_factory=lambda: ["en"])
 
 
 @runtime_checkable
 class TTSBackend(Protocol):
     """Protocol for TTS backend implementations."""
-    
+
+    # Each backend class should define MODEL_CONFIGS as a class variable:
+    # MODEL_CONFIGS: list[ModelConfig]
+
     async def load_model(self, model_size: str) -> None:
         """Load TTS model."""
         ...
-    
+
     async def create_voice_prompt(
         self,
         audio_path: str,
@@ -28,12 +76,12 @@ class TTSBackend(Protocol):
     ) -> Tuple[dict, bool]:
         """
         Create voice prompt from reference audio.
-        
+
         Returns:
             Tuple of (voice_prompt_dict, was_cached)
         """
         ...
-    
+
     async def combine_voice_prompts(
         self,
         audio_paths: List[str],
@@ -41,12 +89,12 @@ class TTSBackend(Protocol):
     ) -> Tuple[np.ndarray, str]:
         """
         Combine multiple voice prompts.
-        
+
         Returns:
             Tuple of (combined_audio_array, combined_text)
         """
         ...
-    
+
     async def generate(
         self,
         text: str,
@@ -57,24 +105,24 @@ class TTSBackend(Protocol):
     ) -> Tuple[np.ndarray, int]:
         """
         Generate audio from text.
-        
+
         Returns:
             Tuple of (audio_array, sample_rate)
         """
         ...
-    
+
     def unload_model(self) -> None:
         """Unload model to free memory."""
         ...
-    
+
     def is_loaded(self) -> bool:
         """Check if model is loaded."""
         ...
-    
+
     def _get_model_path(self, model_size: str) -> str:
         """
         Get model path for a given size.
-        
+
         Returns:
             Model path or HuggingFace Hub ID
         """
@@ -84,28 +132,29 @@ class TTSBackend(Protocol):
 @runtime_checkable
 class STTBackend(Protocol):
     """Protocol for STT (Speech-to-Text) backend implementations."""
-    
+
     async def load_model(self, model_size: str) -> None:
         """Load STT model."""
         ...
-    
+
     async def transcribe(
         self,
         audio_path: str,
         language: Optional[str] = None,
+        model_size: Optional[str] = None,
     ) -> str:
         """
         Transcribe audio to text.
-        
+
         Returns:
             Transcribed text
         """
         ...
-    
+
     def unload_model(self) -> None:
         """Unload model to free memory."""
         ...
-    
+
     def is_loaded(self) -> bool:
         """Check if model is loaded."""
         ...
@@ -117,19 +166,360 @@ _tts_backends: dict[str, TTSBackend] = {}
 _tts_backends_lock = threading.Lock()
 _stt_backend: Optional[STTBackend] = None
 
-# Supported TTS engines
+# Supported TTS engines — keyed by engine name, value is the backend class import path.
+# The factory function uses this for the if/elif chain; the model configs live on the backend classes.
 TTS_ENGINES = {
     "qwen": "Qwen TTS",
+    "qwen_custom_voice": "Qwen CustomVoice",
     "luxtts": "LuxTTS",
     "chatterbox": "Chatterbox TTS",
     "chatterbox_turbo": "Chatterbox Turbo",
+    "tada": "TADA",
+    "kokoro": "Kokoro",
 }
 
 
+def _get_qwen_model_configs() -> list[ModelConfig]:
+    """Return Qwen model configs with backend-aware HF repo IDs."""
+    backend_type = get_backend_type()
+    if backend_type == "mlx":
+        repo_1_7b = "mlx-community/Qwen3-TTS-12Hz-1.7B-Base-bf16"
+        repo_0_6b = "mlx-community/Qwen3-TTS-12Hz-0.6B-Base-bf16"
+    else:
+        repo_1_7b = "Qwen/Qwen3-TTS-12Hz-1.7B-Base"
+        repo_0_6b = "Qwen/Qwen3-TTS-12Hz-0.6B-Base"
+
+    return [
+        ModelConfig(
+            model_name="qwen-tts-1.7B",
+            display_name="Qwen TTS 1.7B",
+            engine="qwen",
+            hf_repo_id=repo_1_7b,
+            model_size="1.7B",
+            size_mb=3500,
+            supports_instruct=False,  # Base model drops instruct silently
+            languages=["zh", "en", "ja", "ko", "de", "fr", "ru", "pt", "es", "it"],
+        ),
+        ModelConfig(
+            model_name="qwen-tts-0.6B",
+            display_name="Qwen TTS 0.6B",
+            engine="qwen",
+            hf_repo_id=repo_0_6b,
+            model_size="0.6B",
+            size_mb=1200,
+            supports_instruct=False,
+            languages=["zh", "en", "ja", "ko", "de", "fr", "ru", "pt", "es", "it"],
+        ),
+    ]
+
+
+def _get_qwen_custom_voice_configs() -> list[ModelConfig]:
+    """Return Qwen CustomVoice model configs."""
+    return [
+        ModelConfig(
+            model_name="qwen-custom-voice-1.7B",
+            display_name="Qwen CustomVoice 1.7B",
+            engine="qwen_custom_voice",
+            hf_repo_id="Qwen/Qwen3-TTS-12Hz-1.7B-CustomVoice",
+            model_size="1.7B",
+            size_mb=3500,
+            supports_instruct=True,
+            languages=["zh", "en", "ja", "ko", "de", "fr", "ru", "pt", "es", "it"],
+        ),
+        ModelConfig(
+            model_name="qwen-custom-voice-0.6B",
+            display_name="Qwen CustomVoice 0.6B",
+            engine="qwen_custom_voice",
+            hf_repo_id="Qwen/Qwen3-TTS-12Hz-0.6B-CustomVoice",
+            model_size="0.6B",
+            size_mb=1200,
+            supports_instruct=True,
+            languages=["zh", "en", "ja", "ko", "de", "fr", "ru", "pt", "es", "it"],
+        ),
+    ]
+
+
+def _get_non_qwen_tts_configs() -> list[ModelConfig]:
+    """Return model configs for non-Qwen TTS engines.
+
+    These are static — no backend-type branching needed.
+    """
+    return [
+        ModelConfig(
+            model_name="luxtts",
+            display_name="LuxTTS (Fast, CPU-friendly)",
+            engine="luxtts",
+            hf_repo_id="YatharthS/LuxTTS",
+            size_mb=300,
+            languages=["en"],
+        ),
+        ModelConfig(
+            model_name="chatterbox-tts",
+            display_name="Chatterbox TTS (Multilingual)",
+            engine="chatterbox",
+            hf_repo_id="ResembleAI/chatterbox",
+            size_mb=3200,
+            needs_trim=True,
+            languages=[
+                "zh",
+                "en",
+                "ja",
+                "ko",
+                "de",
+                "fr",
+                "ru",
+                "pt",
+                "es",
+                "it",
+                "he",
+                "ar",
+                "da",
+                "el",
+                "fi",
+                "hi",
+                "ms",
+                "nl",
+                "no",
+                "pl",
+                "sv",
+                "sw",
+                "tr",
+            ],
+        ),
+        ModelConfig(
+            model_name="chatterbox-turbo",
+            display_name="Chatterbox Turbo (English, Tags)",
+            engine="chatterbox_turbo",
+            hf_repo_id="ResembleAI/chatterbox-turbo",
+            size_mb=1500,
+            needs_trim=True,
+            languages=["en"],
+        ),
+        ModelConfig(
+            model_name="tada-1b",
+            display_name="TADA 1B (English)",
+            engine="tada",
+            hf_repo_id="HumeAI/tada-1b",
+            model_size="1B",
+            size_mb=4000,
+            languages=["en"],
+        ),
+        ModelConfig(
+            model_name="tada-3b-ml",
+            display_name="TADA 3B Multilingual",
+            engine="tada",
+            hf_repo_id="HumeAI/tada-3b-ml",
+            model_size="3B",
+            size_mb=8000,
+            languages=["en", "ar", "zh", "de", "es", "fr", "it", "ja", "pl", "pt"],
+        ),
+        ModelConfig(
+            model_name="kokoro",
+            display_name="Kokoro 82M",
+            engine="kokoro",
+            hf_repo_id="hexgrad/Kokoro-82M",
+            size_mb=350,
+            languages=["en", "es", "fr", "hi", "it", "pt", "ja", "zh"],
+        ),
+    ]
+
+
+def _get_whisper_configs() -> list[ModelConfig]:
+    """Return Whisper STT model configs."""
+    return [
+        ModelConfig(
+            model_name="whisper-base",
+            display_name="Whisper Base",
+            engine="whisper",
+            hf_repo_id="openai/whisper-base",
+            model_size="base",
+        ),
+        ModelConfig(
+            model_name="whisper-small",
+            display_name="Whisper Small",
+            engine="whisper",
+            hf_repo_id="openai/whisper-small",
+            model_size="small",
+        ),
+        ModelConfig(
+            model_name="whisper-medium",
+            display_name="Whisper Medium",
+            engine="whisper",
+            hf_repo_id="openai/whisper-medium",
+            model_size="medium",
+        ),
+        ModelConfig(
+            model_name="whisper-large",
+            display_name="Whisper Large",
+            engine="whisper",
+            hf_repo_id="openai/whisper-large-v3",
+            model_size="large",
+        ),
+        ModelConfig(
+            model_name="whisper-turbo",
+            display_name="Whisper Turbo",
+            engine="whisper",
+            hf_repo_id="openai/whisper-large-v3-turbo",
+            model_size="turbo",
+        ),
+    ]
+
+
+def get_all_model_configs() -> list[ModelConfig]:
+    """Return the full list of model configs (TTS + STT)."""
+    return _get_qwen_model_configs() + _get_qwen_custom_voice_configs() + _get_non_qwen_tts_configs() + _get_whisper_configs()
+
+
+def get_tts_model_configs() -> list[ModelConfig]:
+    """Return only TTS model configs."""
+    return _get_qwen_model_configs() + _get_qwen_custom_voice_configs() + _get_non_qwen_tts_configs()
+
+
+# Lookup helpers — these replace the if/elif chains in main.py
+
+
+def get_model_config(model_name: str) -> Optional[ModelConfig]:
+    """Look up a model config by model_name."""
+    for cfg in get_all_model_configs():
+        if cfg.model_name == model_name:
+            return cfg
+    return None
+
+
+def engine_needs_trim(engine: str) -> bool:
+    """Whether this engine's output should be run through trim_tts_output."""
+    for cfg in get_tts_model_configs():
+        if cfg.engine == engine:
+            return cfg.needs_trim
+    return False
+
+
+def engine_has_model_sizes(engine: str) -> bool:
+    """Whether this engine supports multiple model sizes (only Qwen currently)."""
+    configs = [c for c in get_tts_model_configs() if c.engine == engine]
+    return len(configs) > 1
+
+
+async def load_engine_model(engine: str, model_size: str = "default") -> None:
+    """Load a model for the given engine, handling engines with multiple model sizes."""
+    backend = get_tts_backend_for_engine(engine)
+    if engine in ("qwen", "qwen_custom_voice"):
+        await backend.load_model_async(model_size)
+    elif engine == "tada":
+        await backend.load_model(model_size)
+    else:
+        await backend.load_model()
+
+
+async def ensure_model_cached_or_raise(engine: str, model_size: str = "default") -> None:
+    """Check if a model is cached, raise HTTPException if not. Used by streaming endpoint."""
+    from fastapi import HTTPException
+
+    backend = get_tts_backend_for_engine(engine)
+    cfg = None
+    for c in get_tts_model_configs():
+        if c.engine == engine and c.model_size == model_size:
+            cfg = c
+            break
+
+    if engine in ("qwen", "qwen_custom_voice", "tada"):
+        if not backend._is_model_cached(model_size):
+            raise HTTPException(
+                status_code=400,
+                detail=f"Model {model_size} is not downloaded yet. Use /generate to trigger a download.",
+            )
+    else:
+        if not backend._is_model_cached():
+            display = cfg.display_name if cfg else engine
+            raise HTTPException(
+                status_code=400,
+                detail=f"{display} model is not downloaded yet. Use /generate to trigger a download.",
+            )
+
+
+def unload_model_by_config(config: ModelConfig) -> bool:
+    """Unload a model given its config. Returns True if it was loaded, False otherwise."""
+    from . import get_tts_backend_for_engine
+    from ..services import tts, transcribe
+
+    if config.engine == "whisper":
+        whisper_model = transcribe.get_whisper_model()
+        if whisper_model.is_loaded() and whisper_model.model_size == config.model_size:
+            transcribe.unload_whisper_model()
+            return True
+        return False
+
+    if config.engine == "qwen":
+        tts_model = tts.get_tts_model()
+        loaded_size = getattr(tts_model, "_current_model_size", None) or getattr(tts_model, "model_size", None)
+        if tts_model.is_loaded() and loaded_size == config.model_size:
+            tts.unload_tts_model()
+            return True
+        return False
+
+    if config.engine == "qwen_custom_voice":
+        backend = get_tts_backend_for_engine(config.engine)
+        loaded_size = getattr(backend, "_current_model_size", None) or getattr(backend, "model_size", None)
+        if backend.is_loaded() and loaded_size == config.model_size:
+            backend.unload_model()
+            return True
+        return False
+
+    # All other TTS engines
+    backend = get_tts_backend_for_engine(config.engine)
+    if backend.is_loaded():
+        backend.unload_model()
+        return True
+    return False
+
+
+def check_model_loaded(config: ModelConfig) -> bool:
+    """Check if a model is currently loaded."""
+    from . import get_tts_backend_for_engine
+    from ..services import tts, transcribe
+
+    try:
+        if config.engine == "whisper":
+            whisper_model = transcribe.get_whisper_model()
+            return whisper_model.is_loaded() and getattr(whisper_model, "model_size", None) == config.model_size
+
+        if config.engine == "qwen":
+            tts_model = tts.get_tts_model()
+            loaded_size = getattr(tts_model, "_current_model_size", None) or getattr(tts_model, "model_size", None)
+            return tts_model.is_loaded() and loaded_size == config.model_size
+
+        if config.engine == "qwen_custom_voice":
+            backend = get_tts_backend_for_engine(config.engine)
+            loaded_size = getattr(backend, "_current_model_size", None) or getattr(backend, "model_size", None)
+            return backend.is_loaded() and loaded_size == config.model_size
+
+        backend = get_tts_backend_for_engine(config.engine)
+        return backend.is_loaded()
+    except Exception:
+        return False
+
+
+def get_model_load_func(config: ModelConfig):
+    """Return a callable that loads/downloads the model."""
+    from . import get_tts_backend_for_engine
+    from ..services import tts, transcribe
+
+    if config.engine == "whisper":
+        return lambda: transcribe.get_whisper_model().load_model(config.model_size)
+
+    if config.engine == "qwen":
+        return lambda: tts.get_tts_model().load_model(config.model_size)
+
+    if config.engine == "qwen_custom_voice":
+        return lambda: get_tts_backend_for_engine(config.engine).load_model(config.model_size)
+
+    return lambda: get_tts_backend_for_engine(config.engine).load_model()
+
+
 def get_tts_backend() -> TTSBackend:
     """
     Get or create the default (Qwen) TTS backend instance based on platform.
-    
+
     Returns:
         TTS backend instance (MLX or PyTorch)
     """
@@ -139,45 +529,62 @@ def get_tts_backend() -> TTSBackend:
 def get_tts_backend_for_engine(engine: str) -> TTSBackend:
     """
     Get or create a TTS backend for the given engine.
-    
+
     Args:
-        engine: Engine name ("qwen" or "luxtts")
-    
+        engine: Engine name (e.g. "qwen", "luxtts", "chatterbox", "chatterbox_turbo")
+
     Returns:
         TTS backend instance
     """
     global _tts_backends
-    
+
     # Fast path: check without lock
     if engine in _tts_backends:
         return _tts_backends[engine]
-    
+
     # Slow path: create with lock to avoid duplicate instantiation
     with _tts_backends_lock:
         # Double-check after acquiring lock
         if engine in _tts_backends:
             return _tts_backends[engine]
-        
+
         if engine == "qwen":
             backend_type = get_backend_type()
             if backend_type == "mlx":
                 from .mlx_backend import MLXTTSBackend
+
                 backend = MLXTTSBackend()
             else:
                 from .pytorch_backend import PyTorchTTSBackend
+
                 backend = PyTorchTTSBackend()
         elif engine == "luxtts":
             from .luxtts_backend import LuxTTSBackend
+
             backend = LuxTTSBackend()
         elif engine == "chatterbox":
             from .chatterbox_backend import ChatterboxTTSBackend
+
             backend = ChatterboxTTSBackend()
         elif engine == "chatterbox_turbo":
             from .chatterbox_turbo_backend import ChatterboxTurboTTSBackend
+
             backend = ChatterboxTurboTTSBackend()
+        elif engine == "tada":
+            from .hume_backend import HumeTadaBackend
+
+            backend = HumeTadaBackend()
+        elif engine == "kokoro":
+            from .kokoro_backend import KokoroTTSBackend
+
+            backend = KokoroTTSBackend()
+        elif engine == "qwen_custom_voice":
+            from .qwen_custom_voice_backend import QwenCustomVoiceBackend
+
+            backend = QwenCustomVoiceBackend()
         else:
             raise ValueError(f"Unknown TTS engine: {engine}. Supported: {list(TTS_ENGINES.keys())}")
-        
+
         _tts_backends[engine] = backend
         return backend
 
@@ -185,22 +592,24 @@ def get_tts_backend_for_engine(engine: str) -> TTSBackend:
 def get_stt_backend() -> STTBackend:
     """
     Get or create STT backend instance based on platform.
-    
+
     Returns:
         STT backend instance (MLX or PyTorch)
     """
     global _stt_backend
-    
+
     if _stt_backend is None:
         backend_type = get_backend_type()
-        
+
         if backend_type == "mlx":
             from .mlx_backend import MLXSTTBackend
+
             _stt_backend = MLXSTTBackend()
         else:
             from .pytorch_backend import PyTorchSTTBackend
+
             _stt_backend = PyTorchSTTBackend()
-    
+
     return _stt_backend
 
 

backend/backends/base.py

@@ -0,0 +1,327 @@
+"""
+Shared utilities for TTS/STT backend implementations.
+
+Eliminates duplication of cache checking, device detection,
+voice prompt combination, and model loading progress tracking.
+"""
+
+import logging
+import platform
+from contextlib import contextmanager
+from pathlib import Path
+from typing import Callable, List, Optional, Tuple
+
+import numpy as np
+
+from ..utils.audio import normalize_audio, load_audio
+from ..utils.progress import get_progress_manager
+from ..utils.hf_progress import HFProgressTracker, create_hf_progress_callback
+from ..utils.tasks import get_task_manager
+
+logger = logging.getLogger(__name__)
+
+
+def is_model_cached(
+    hf_repo: str,
+    *,
+    weight_extensions: tuple[str, ...] = (".safetensors", ".bin"),
+    required_files: Optional[list[str]] = None,
+) -> bool:
+    """
+    Check if a HuggingFace model is fully cached locally.
+
+    Args:
+        hf_repo: HuggingFace repo ID (e.g. "Qwen/Qwen3-TTS-12Hz-1.7B-Base")
+        weight_extensions: File extensions that count as model weights.
+        required_files: If set, check that these specific filenames exist
+                        in snapshots instead of checking by extension.
+
+    Returns:
+        True if model is fully cached, False if missing or incomplete.
+    """
+    try:
+        from huggingface_hub import constants as hf_constants
+
+        repo_cache = Path(hf_constants.HF_HUB_CACHE) / ("models--" + hf_repo.replace("/", "--"))
+
+        if not repo_cache.exists():
+            return False
+
+        # Incomplete blobs mean a download is still in progress
+        blobs_dir = repo_cache / "blobs"
+        if blobs_dir.exists() and any(blobs_dir.glob("*.incomplete")):
+            logger.debug(f"Found .incomplete files for {hf_repo}")
+            return False
+
+        snapshots_dir = repo_cache / "snapshots"
+        if not snapshots_dir.exists():
+            return False
+
+        if required_files:
+            # Check that every required filename exists somewhere in snapshots
+            for fname in required_files:
+                if not any(snapshots_dir.rglob(fname)):
+                    return False
+            return True
+
+        # Check that at least one weight file exists
+        for ext in weight_extensions:
+            if any(snapshots_dir.rglob(f"*{ext}")):
+                return True
+
+        logger.debug(f"No model weights found for {hf_repo}")
+        return False
+
+    except Exception as e:
+        logger.warning(f"Error checking cache for {hf_repo}: {e}")
+        return False
+
+
+def get_torch_device(
+    *,
+    allow_xpu: bool = False,
+    allow_directml: bool = False,
+    allow_mps: bool = False,
+    force_cpu_on_mac: bool = False,
+) -> str:
+    """
+    Detect the best available torch device.
+
+    Args:
+        allow_xpu: Check for Intel XPU (IPEX) support.
+        allow_directml: Check for DirectML (Windows) support.
+        allow_mps: Allow MPS (Apple Silicon). If False, MPS falls back to CPU.
+        force_cpu_on_mac: Force CPU on macOS regardless of GPU availability.
+    """
+    if force_cpu_on_mac and platform.system() == "Darwin":
+        return "cpu"
+
+    import torch
+
+    if torch.cuda.is_available():
+        return "cuda"
+
+    if allow_xpu:
+        try:
+            import intel_extension_for_pytorch  # noqa: F401
+
+            if hasattr(torch, "xpu") and torch.xpu.is_available():
+                return "xpu"
+        except ImportError:
+            pass
+
+    if allow_directml:
+        try:
+            import torch_directml
+
+            if torch_directml.device_count() > 0:
+                return torch_directml.device(0)
+        except ImportError:
+            pass
+
+    if allow_mps:
+        if hasattr(torch.backends, "mps") and torch.backends.mps.is_available():
+            return "mps"
+
+    return "cpu"
+
+
+def check_cuda_compatibility() -> tuple[bool, str | None]:
+    """Check if the installed PyTorch supports the current GPU's compute capability.
+
+    Returns:
+        (compatible, warning_message) — compatible is True if OK or no CUDA GPU,
+        warning_message is a human-readable string if there's a problem.
+    """
+    import torch
+
+    if not torch.cuda.is_available():
+        return True, None
+
+    major, minor = torch.cuda.get_device_capability(0)
+    capability = f"{major}.{minor}"
+    device_name = torch.cuda.get_device_name(0)
+    sm_tag = f"sm_{major}{minor}"
+
+    # torch.cuda._get_arch_list() returns the SM architectures this build
+    # was compiled for (e.g. ["sm_50", "sm_60", ..., "sm_90"]).
+    try:
+        arch_list = torch.cuda._get_arch_list()
+        if arch_list:
+            # Check for both sm_XX and compute_XX (JIT-compiled) entries
+            compute_tag = f"compute_{major}{minor}"
+            if sm_tag not in arch_list and compute_tag not in arch_list:
+                return False, (
+                    f"{device_name} (compute capability {capability} / {sm_tag}) "
+                    f"is not supported by this PyTorch build. "
+                    f"Supported architectures: {', '.join(arch_list)}. "
+                    f"Install PyTorch nightly (cu128) for newer GPU support: "
+                    f"pip install torch --index-url https://download.pytorch.org/whl/nightly/cu128"
+                )
+    except AttributeError:
+        pass
+
+    return True, None
+
+
+def empty_device_cache(device: str) -> None:
+    """
+    Free cached memory on the given device (CUDA or XPU).
+
+    Backends should call this after unloading models so VRAM is returned
+    to the OS.
+    """
+    import torch
+
+    if device == "cuda" and torch.cuda.is_available():
+        torch.cuda.empty_cache()
+    elif device == "xpu" and hasattr(torch, "xpu"):
+        torch.xpu.empty_cache()
+
+
+def manual_seed(seed: int, device: str) -> None:
+    """
+    Set the random seed on both CPU and the active accelerator.
+
+    Covers CUDA and Intel XPU so that generation is reproducible
+    regardless of which GPU backend is in use.
+    """
+    import torch
+
+    torch.manual_seed(seed)
+    if device == "cuda" and torch.cuda.is_available():
+        torch.cuda.manual_seed(seed)
+    elif device == "xpu" and hasattr(torch, "xpu"):
+        torch.xpu.manual_seed(seed)
+
+
+async def combine_voice_prompts(
+    audio_paths: List[str],
+    reference_texts: List[str],
+    *,
+    sample_rate: Optional[int] = None,
+) -> Tuple[np.ndarray, str]:
+    """
+    Combine multiple reference audio samples into one.
+
+    Loads each audio file, normalizes, concatenates, and joins texts.
+
+    Args:
+        audio_paths: Paths to reference audio files.
+        reference_texts: Corresponding transcripts.
+        sample_rate: If set, resample audio to this rate during loading.
+    """
+    combined_audio = []
+
+    for path in audio_paths:
+        kwargs = {"sample_rate": sample_rate} if sample_rate else {}
+        audio, _sr = load_audio(path, **kwargs)
+        audio = normalize_audio(audio)
+        combined_audio.append(audio)
+
+    mixed = np.concatenate(combined_audio)
+    mixed = normalize_audio(mixed)
+    combined_text = " ".join(reference_texts)
+
+    return mixed, combined_text
+
+
+@contextmanager
+def model_load_progress(
+    model_name: str,
+    is_cached: bool,
+    filter_non_downloads: Optional[bool] = None,
+):
+    """
+    Context manager for model loading with HF download progress tracking.
+
+    Handles the tqdm patching, progress_manager/task_manager lifecycle,
+    and error reporting that every backend duplicates.
+
+    Args:
+        model_name: Progress tracking key (e.g. "qwen-tts-1.7B", "whisper-base").
+        is_cached: Whether the model is already downloaded.
+        filter_non_downloads: Whether to filter non-download tqdm bars.
+                              Defaults to `is_cached`.
+
+    Yields:
+        The tracker context (already entered). The caller loads the model
+        inside the `with` block. The tqdm patch is torn down on exit.
+
+    Usage:
+        with model_load_progress("qwen-tts-1.7B", is_cached) as ctx:
+            self.model = SomeModel.from_pretrained(...)
+    """
+    if filter_non_downloads is None:
+        filter_non_downloads = is_cached
+
+    progress_manager = get_progress_manager()
+    task_manager = get_task_manager()
+
+    progress_callback = create_hf_progress_callback(model_name, progress_manager)
+    tracker = HFProgressTracker(progress_callback, filter_non_downloads=filter_non_downloads)
+
+    tracker_context = tracker.patch_download()
+    tracker_context.__enter__()
+
+    if not is_cached:
+        task_manager.start_download(model_name)
+        progress_manager.update_progress(
+            model_name=model_name,
+            current=0,
+            total=0,
+            filename="Connecting to HuggingFace...",
+            status="downloading",
+        )
+
+    try:
+        yield tracker_context
+    except Exception as e:
+        # Report error to both managers
+        progress_manager.mark_error(model_name, str(e))
+        task_manager.error_download(model_name, str(e))
+        raise
+    else:
+        # Only mark complete if we were tracking a download
+        if not is_cached:
+            progress_manager.mark_complete(model_name)
+            task_manager.complete_download(model_name)
+    finally:
+        tracker_context.__exit__(None, None, None)
+
+
+def patch_chatterbox_f32(model) -> None:
+    """
+    Patch float64 -> float32 dtype mismatches in upstream chatterbox.
+
+    librosa.load returns float64 numpy arrays. Multiple upstream code paths
+    convert these to torch tensors via torch.from_numpy() without casting,
+    then matmul against float32 model weights. This patches the two known
+    entry points:
+
+    1. S3Tokenizer.log_mel_spectrogram — audio tensor hits _mel_filters (f32)
+    2. VoiceEncoder.forward — float64 mel spectrograms hit LSTM weights (f32)
+    """
+    import types
+
+    # Patch S3Tokenizer
+    _tokzr = model.s3gen.tokenizer
+    _orig_log_mel = _tokzr.log_mel_spectrogram.__func__
+
+    def _f32_log_mel(self_tokzr, audio, padding=0):
+        import torch as _torch
+
+        if _torch.is_tensor(audio):
+            audio = audio.float()
+        return _orig_log_mel(self_tokzr, audio, padding)
+
+    _tokzr.log_mel_spectrogram = types.MethodType(_f32_log_mel, _tokzr)
+
+    # Patch VoiceEncoder
+    _ve = model.ve
+    _orig_ve_forward = _ve.forward.__func__
+
+    def _f32_ve_forward(self_ve, mels):
+        return _orig_ve_forward(self_ve, mels.float())
+
+    _ve.forward = types.MethodType(_f32_ve_forward, _ve)

backend/backends/chatterbox_backend.py

@@ -8,7 +8,6 @@ on macOS due to known MPS tensor issues.
 
 import asyncio
 import logging
-import platform
 import threading
 from pathlib import Path
 from typing import ClassVar, List, Optional, Tuple
@@ -16,9 +15,15 @@ from typing import ClassVar, List, Optional, Tuple
 import numpy as np
 
 from . import TTSBackend
-from ..utils.audio import normalize_audio, load_audio
-from ..utils.progress import get_progress_manager
-from ..utils.tasks import get_task_manager
+from .base import (
+    is_model_cached,
+    get_torch_device,
+    empty_device_cache,
+    manual_seed,
+    combine_voice_prompts as _combine_voice_prompts,
+    model_load_progress,
+    patch_chatterbox_f32,
+)
 
 logger = logging.getLogger(__name__)
 
@@ -45,17 +50,7 @@ class ChatterboxTTSBackend:
         self._model_load_lock = asyncio.Lock()
 
     def _get_device(self) -> str:
-        """Get the best available device. Forces CPU on macOS (MPS issue)."""
-        if platform.system() == "Darwin":
-            return "cpu"
-        try:
-            import torch
-
-            if torch.cuda.is_available():
-                return "cuda"
-        except ImportError:
-            pass
-        return "cpu"
+        return get_torch_device(force_cpu_on_mac=True, allow_xpu=True)
 
     def is_loaded(self) -> bool:
         return self.model is not None
@@ -64,33 +59,7 @@ class ChatterboxTTSBackend:
         return CHATTERBOX_HF_REPO
 
     def _is_model_cached(self, model_size: str = "default") -> bool:
-        """Check if the Chatterbox multilingual model is cached locally."""
-        try:
-            from huggingface_hub import constants as hf_constants
-
-            repo_cache = Path(hf_constants.HF_HUB_CACHE) / (
-                "models--" + CHATTERBOX_HF_REPO.replace("/", "--")
-            )
-
-            if not repo_cache.exists():
-                return False
-
-            blobs_dir = repo_cache / "blobs"
-            if blobs_dir.exists() and any(blobs_dir.glob("*.incomplete")):
-                return False
-
-            # Check for multilingual weight files
-            snapshots_dir = repo_cache / "snapshots"
-            if snapshots_dir.exists():
-                for fname in _MTL_WEIGHT_FILES:
-                    if not any(snapshots_dir.rglob(fname)):
-                        return False
-                return True
-
-            return False
-        except Exception as e:
-            logger.warning(f"Error checking Chatterbox cache: {e}")
-            return False
+        return is_model_cached(CHATTERBOX_HF_REPO, required_files=_MTL_WEIGHT_FILES)
 
     async def load_model(self, model_size: str = "default") -> None:
         """Load the Chatterbox multilingual model."""
@@ -103,132 +72,45 @@ class ChatterboxTTSBackend:
 
     def _load_model_sync(self):
         """Synchronous model loading."""
-        from ..utils.hf_progress import HFProgressTracker, create_hf_progress_callback
-
-        progress_manager = get_progress_manager()
-        task_manager = get_task_manager()
         model_name = "chatterbox-tts"
-
         is_cached = self._is_model_cached()
 
-        # Set up HF progress tracking (intercepts tqdm for file-level progress)
-        progress_callback = create_hf_progress_callback(model_name, progress_manager)
-        tracker = HFProgressTracker(progress_callback, filter_non_downloads=is_cached)
-        tracker_context = tracker.patch_download()
-        tracker_context.__enter__()
-
-        if not is_cached:
-            task_manager.start_download(model_name)
-            progress_manager.update_progress(
-                model_name=model_name,
-                current=0,
-                total=0,
-                filename="Connecting to HuggingFace...",
-                status="downloading",
-            )
-
-        try:
+        with model_load_progress(model_name, is_cached):
             device = self._get_device()
             self._device = device
-
             logger.info(f"Loading Chatterbox Multilingual TTS on {device}...")
 
             import torch
             from chatterbox.mtl_tts import ChatterboxMultilingualTTS
 
-            # Load into a local variable first, apply all patches, then
-            # assign to self.model.  This avoids leaving a half-initialised
-            # model on self.model if any patch step raises an exception.
-            #
-            # Monkey-patch torch.load for CPU loading. The model's .pt files
-            # were saved on CUDA; from_pretrained() doesn't pass map_location
-            # so loading on CPU fails without this.
-            try:
-                if device == "cpu":
-                    _orig_torch_load = torch.load
+            if device == "cpu":
+                _orig_torch_load = torch.load
 
-                    def _patched_load(*args, **kwargs):
-                        kwargs.setdefault("map_location", "cpu")
-                        return _orig_torch_load(*args, **kwargs)
+                def _patched_load(*args, **kwargs):
+                    kwargs.setdefault("map_location", "cpu")
+                    return _orig_torch_load(*args, **kwargs)
 
-                    with ChatterboxTTSBackend._load_lock:
-                        torch.load = _patched_load
-                        try:
-                            model = ChatterboxMultilingualTTS.from_pretrained(
-                                device=device,
-                            )
-                        finally:
-                            torch.load = _orig_torch_load
-                else:
-                    model = ChatterboxMultilingualTTS.from_pretrained(
-                        device=device,
-                    )
-            finally:
-                tracker_context.__exit__(None, None, None)
+                with ChatterboxTTSBackend._load_lock:
+                    torch.load = _patched_load
+                    try:
+                        model = ChatterboxMultilingualTTS.from_pretrained(device=device)
+                    finally:
+                        torch.load = _orig_torch_load
+            else:
+                model = ChatterboxMultilingualTTS.from_pretrained(device=device)
 
-            # Fix: transformers >= 4.36 defaults LlamaModel to sdpa attention
-            # which doesn't support output_attentions=True (needed by
-            # Chatterbox's AlignmentStreamAnalyzer). Force eager attention.
+            # Fix sdpa attention for output_attentions support
             t3_tfmr = model.t3.tfmr
-            if hasattr(t3_tfmr, "config") and hasattr(
-                t3_tfmr.config, "_attn_implementation"
-            ):
+            if hasattr(t3_tfmr, "config") and hasattr(t3_tfmr.config, "_attn_implementation"):
                 t3_tfmr.config._attn_implementation = "eager"
                 for layer in getattr(t3_tfmr, "layers", []):
                     if hasattr(layer, "self_attn"):
                         layer.self_attn._attn_implementation = "eager"
 
-            if not is_cached:
-                progress_manager.mark_complete(model_name)
-                task_manager.complete_download(model_name)
-
-            # Patch float64 → float32 dtype mismatches in upstream chatterbox.
-            # librosa.load returns float64 numpy; multiple upstream code paths
-            # convert it to a torch tensor via torch.from_numpy() without
-            # casting, then matmul it against float32 model weights.
-            import types
-
-            # Patch S3Tokenizer (used by s3gen.tokenizer)
-            _tokzr = model.s3gen.tokenizer
-            _orig_log_mel = _tokzr.log_mel_spectrogram.__func__
-
-            def _f32_log_mel(self_tokzr, audio, padding=0):
-                import torch as _torch
-                if _torch.is_tensor(audio):
-                    audio = audio.float()
-                return _orig_log_mel(self_tokzr, audio, padding)
-
-            _tokzr.log_mel_spectrogram = types.MethodType(_f32_log_mel, _tokzr)
-
-            # Patch VoiceEncoder
-            _ve = model.ve
-            _orig_ve_forward = _ve.forward.__func__
-
-            def _f32_ve_forward(self_ve, mels):
-                return _orig_ve_forward(self_ve, mels.float())
-
-            _ve.forward = types.MethodType(_f32_ve_forward, _ve)
-
-            # All patches applied successfully — publish the model
+            patch_chatterbox_f32(model)
             self.model = model
 
-            logger.info("Chatterbox Multilingual TTS loaded successfully")
-
-        except ImportError as e:
-            logger.error(
-                "chatterbox-tts package not found. "
-                "Install with: pip install chatterbox-tts"
-            )
-            if not is_cached:
-                progress_manager.mark_error(model_name, str(e))
-                task_manager.error_download(model_name, str(e))
-            raise
-        except Exception as e:
-            logger.error(f"Failed to load Chatterbox: {e}")
-            if not is_cached:
-                progress_manager.mark_error(model_name, str(e))
-                task_manager.error_download(model_name, str(e))
-            raise
+        logger.info("Chatterbox Multilingual TTS loaded successfully")
 
     def unload_model(self) -> None:
         """Unload model to free memory."""
@@ -237,10 +119,7 @@ class ChatterboxTTSBackend:
             del self.model
             self.model = None
             self._device = None
-            if device == "cuda":
-                import torch
-
-                torch.cuda.empty_cache()
+            empty_device_cache(device)
             logger.info("Chatterbox unloaded")
 
     async def create_voice_prompt(
@@ -267,17 +146,7 @@ class ChatterboxTTSBackend:
         audio_paths: List[str],
         reference_texts: List[str],
     ) -> Tuple[np.ndarray, str]:
-        """Combine multiple reference samples."""
-        combined_audio = []
-        for path in audio_paths:
-            audio, _sr = load_audio(path)
-            audio = normalize_audio(audio)
-            combined_audio.append(audio)
-
-        mixed = np.concatenate(combined_audio)
-        mixed = normalize_audio(mixed)
-        combined_text = " ".join(reference_texts)
-        return mixed, combined_text
+        return await _combine_voice_prompts(audio_paths, reference_texts)
 
     # Per-language generation defaults. Lower temp + higher cfg = clearer speech.
     _LANG_DEFAULTS: ClassVar[dict] = {
@@ -330,7 +199,7 @@ class ChatterboxTTSBackend:
             import torch
 
             if seed is not None:
-                torch.manual_seed(seed)
+                manual_seed(seed, self._device)
 
             logger.info(f"[Chatterbox] Generating: lang={language}")
 
@@ -350,10 +219,7 @@ class ChatterboxTTSBackend:
             else:
                 audio = np.asarray(wav, dtype=np.float32)
 
-            sample_rate = (
-                getattr(self.model, "sr", None)
-                or getattr(self.model, "sample_rate", 24000)
-            )
+            sample_rate = getattr(self.model, "sr", None) or getattr(self.model, "sample_rate", 24000)
 
             return audio, sample_rate
 

backend/backends/chatterbox_turbo_backend.py

@@ -8,7 +8,6 @@ Forces CPU on macOS due to known MPS tensor issues.
 
 import asyncio
 import logging
-import platform
 import threading
 from pathlib import Path
 from typing import ClassVar, List, Optional, Tuple
@@ -16,9 +15,15 @@ from typing import ClassVar, List, Optional, Tuple
 import numpy as np
 
 from . import TTSBackend
-from ..utils.audio import normalize_audio, load_audio
-from ..utils.progress import get_progress_manager
-from ..utils.tasks import get_task_manager
+from .base import (
+    is_model_cached,
+    get_torch_device,
+    empty_device_cache,
+    manual_seed,
+    combine_voice_prompts as _combine_voice_prompts,
+    model_load_progress,
+    patch_chatterbox_f32,
+)
 
 logger = logging.getLogger(__name__)
 
@@ -45,17 +50,7 @@ class ChatterboxTurboTTSBackend:
         self._model_load_lock = asyncio.Lock()
 
     def _get_device(self) -> str:
-        """Get the best available device. Forces CPU on macOS (MPS issue)."""
-        if platform.system() == "Darwin":
-            return "cpu"
-        try:
-            import torch
-
-            if torch.cuda.is_available():
-                return "cuda"
-        except ImportError:
-            pass
-        return "cpu"
+        return get_torch_device(force_cpu_on_mac=True, allow_xpu=True)
 
     def is_loaded(self) -> bool:
         return self.model is not None
@@ -64,33 +59,7 @@ class ChatterboxTurboTTSBackend:
         return CHATTERBOX_TURBO_HF_REPO
 
     def _is_model_cached(self, model_size: str = "default") -> bool:
-        """Check if the Chatterbox Turbo model is cached locally."""
-        try:
-            from huggingface_hub import constants as hf_constants
-
-            repo_cache = Path(hf_constants.HF_HUB_CACHE) / (
-                "models--" + CHATTERBOX_TURBO_HF_REPO.replace("/", "--")
-            )
-
-            if not repo_cache.exists():
-                return False
-
-            blobs_dir = repo_cache / "blobs"
-            if blobs_dir.exists() and any(blobs_dir.glob("*.incomplete")):
-                return False
-
-            # Check for turbo weight files
-            snapshots_dir = repo_cache / "snapshots"
-            if snapshots_dir.exists():
-                for fname in _TURBO_WEIGHT_FILES:
-                    if not any(snapshots_dir.rglob(fname)):
-                        return False
-                return True
-
-            return False
-        except Exception as e:
-            logger.warning(f"Error checking Chatterbox Turbo cache: {e}")
-            return False
+        return is_model_cached(CHATTERBOX_TURBO_HF_REPO, required_files=_TURBO_WEIGHT_FILES)
 
     async def load_model(self, model_size: str = "default") -> None:
         """Load the Chatterbox Turbo model."""
@@ -103,59 +72,24 @@ class ChatterboxTurboTTSBackend:
 
     def _load_model_sync(self):
         """Synchronous model loading."""
-        from ..utils.hf_progress import HFProgressTracker, create_hf_progress_callback
-
-        progress_manager = get_progress_manager()
-        task_manager = get_task_manager()
         model_name = "chatterbox-turbo"
-
         is_cached = self._is_model_cached()
 
-        # Set up HF progress tracking (intercepts tqdm for file-level progress)
-        progress_callback = create_hf_progress_callback(model_name, progress_manager)
-        tracker = HFProgressTracker(progress_callback, filter_non_downloads=is_cached)
-        tracker_context = tracker.patch_download()
-        tracker_context.__enter__()
-
-        if not is_cached:
-            task_manager.start_download(model_name)
-            progress_manager.update_progress(
-                model_name=model_name,
-                current=0,
-                total=0,
-                filename="Connecting to HuggingFace...",
-                status="downloading",
-            )
-
-        try:
+        with model_load_progress(model_name, is_cached):
             device = self._get_device()
             self._device = device
-
             logger.info(f"Loading Chatterbox Turbo TTS on {device}...")
 
             import torch
             from huggingface_hub import snapshot_download
             from chatterbox.tts_turbo import ChatterboxTurboTTS
 
-            # Download model files ourselves so we can pass token=None
-            # (upstream from_pretrained passes token=True which requires
-            # a stored HF token even though the repo is public).
-            try:
-                local_path = snapshot_download(
-                    repo_id=CHATTERBOX_TURBO_HF_REPO,
-                    token=None,
-                    allow_patterns=[
-                        "*.safetensors", "*.json", "*.txt", "*.pt", "*.model",
-                    ],
-                )
-            finally:
-                tracker_context.__exit__(None, None, None)
+            local_path = snapshot_download(
+                repo_id=CHATTERBOX_TURBO_HF_REPO,
+                token=None,
+                allow_patterns=["*.safetensors", "*.json", "*.txt", "*.pt", "*.model"],
+            )
 
-            # Monkey-patch torch.load for CPU loading. The model's .pt files
-            # were saved on CUDA; from_local() doesn't pass map_location
-            # so loading on CPU fails without this.
-            # Load into a local var, apply patches, then publish to
-            # self.model so a failed patch doesn't leave us half-initialised.
             if device == "cpu":
                 _orig_torch_load = torch.load
 
@@ -166,73 +100,16 @@ class ChatterboxTurboTTSBackend:
                 with ChatterboxTurboTTSBackend._load_lock:
                     torch.load = _patched_load
                     try:
-                        model = ChatterboxTurboTTS.from_local(
-                            local_path, device,
-                        )
+                        model = ChatterboxTurboTTS.from_local(local_path, device)
                     finally:
                         torch.load = _orig_torch_load
             else:
-                model = ChatterboxTurboTTS.from_local(
-                    local_path, device,
-                )
+                model = ChatterboxTurboTTS.from_local(local_path, device)
 
-            if not is_cached:
-                progress_manager.mark_complete(model_name)
-                task_manager.complete_download(model_name)
-
-            # Patch float64 → float32 dtype mismatches in upstream chatterbox.
-            # librosa.load returns float64 numpy; multiple upstream code paths
-            # convert it to a torch tensor via torch.from_numpy() without
-            # casting, then matmul it against float32 model weights.
-            # We patch the two known entry points:
-            #
-            # 1. S3Tokenizer.log_mel_spectrogram — the audio tensor from
-            #    librosa hits _mel_filters (float32) in a matmul.
-            # 2. VoiceEncoder.forward — float64 mel spectrograms hit the
-            #    float32 LSTM weights.
-            import types
-
-            # Patch S3Tokenizer (used by s3gen.tokenizer)
-            _tokzr = model.s3gen.tokenizer
-            _orig_log_mel = _tokzr.log_mel_spectrogram.__func__
-
-            def _f32_log_mel(self_tokzr, audio, padding=0):
-                import torch as _torch
-                if _torch.is_tensor(audio):
-                    audio = audio.float()
-                return _orig_log_mel(self_tokzr, audio, padding)
-
-            _tokzr.log_mel_spectrogram = types.MethodType(_f32_log_mel, _tokzr)
-
-            # Patch VoiceEncoder
-            _ve = model.ve
-            _orig_ve_forward = _ve.forward.__func__
-
-            def _f32_ve_forward(self_ve, mels):
-                return _orig_ve_forward(self_ve, mels.float())
-
-            _ve.forward = types.MethodType(_f32_ve_forward, _ve)
-
-            # Only publish after all patches succeed
+            patch_chatterbox_f32(model)
             self.model = model
 
-            logger.info("Chatterbox Turbo TTS loaded successfully")
-
-        except ImportError as e:
-            logger.error(
-                "chatterbox-tts package not found. "
-                "Install with: pip install chatterbox-tts"
-            )
-            if not is_cached:
-                progress_manager.mark_error(model_name, str(e))
-                task_manager.error_download(model_name, str(e))
-            raise
-        except Exception as e:
-            logger.error(f"Failed to load Chatterbox Turbo: {e}")
-            if not is_cached:
-                progress_manager.mark_error(model_name, str(e))
-                task_manager.error_download(model_name, str(e))
-            raise
+        logger.info("Chatterbox Turbo TTS loaded successfully")
 
     def unload_model(self) -> None:
         """Unload model to free memory."""
@@ -241,10 +118,7 @@ class ChatterboxTurboTTSBackend:
             del self.model
             self.model = None
             self._device = None
-            if device == "cuda":
-                import torch
-
-                torch.cuda.empty_cache()
+            empty_device_cache(device)
             logger.info("Chatterbox Turbo unloaded")
 
     async def create_voice_prompt(
@@ -270,17 +144,7 @@ class ChatterboxTurboTTSBackend:
         audio_paths: List[str],
         reference_texts: List[str],
     ) -> Tuple[np.ndarray, str]:
-        """Combine multiple reference samples."""
-        combined_audio = []
-        for path in audio_paths:
-            audio, _sr = load_audio(path)
-            audio = normalize_audio(audio)
-            combined_audio.append(audio)
-
-        mixed = np.concatenate(combined_audio)
-        mixed = normalize_audio(mixed)
-        combined_text = " ".join(reference_texts)
-        return mixed, combined_text
+        return await _combine_voice_prompts(audio_paths, reference_texts)
 
     async def generate(
         self,
@@ -316,7 +180,7 @@ class ChatterboxTurboTTSBackend:
             import torch
 
             if seed is not None:
-                torch.manual_seed(seed)
+                manual_seed(seed, self._device)
 
             logger.info("[Chatterbox Turbo] Generating (English)")
 
@@ -335,10 +199,7 @@ class ChatterboxTurboTTSBackend:
             else:
                 audio = np.asarray(wav, dtype=np.float32)
 
-            sample_rate = (
-                getattr(self.model, "sr", None)
-                or getattr(self.model, "sample_rate", 24000)
-            )
+            sample_rate = getattr(self.model, "sr", None) or getattr(self.model, "sample_rate", 24000)
 
             return audio, sample_rate