docs: update documentation and devlog for TalkBox fork and rebrand

- Updated CHANGELOG.md: added fork, rebrand, port isolation, and DCP workflow entries to Unreleased
- Updated project record: set TalkBox project identity, summary, and architecture tags
- Updated devlog index: set TalkBox devlog title and summary
- Added devlog entry 'fork-and-rebrand': initial fork, rebrand, port migration, and devlog workflow

.labyricorn/project/contents.lr

@@ -2,26 +2,34 @@ _model: project
 ---
 schema_version: 1
 ---
-project_id: labyricorn-project-template
+project_id: talkbox
 ---
-title: Labyricorn Project Template
+title: TalkBox
 ---
 summary:
 
-Initial template and publishing structure for Labyricorn-compatible projects and development logs.
+Local-first AI voice studio for multi-engine speech generation, zero-shot voice cloning, global dictation, and MCP agent voice I/O.
 ---
 status: active
 ---
-started: 2026-08-23
+started: 2026-08-24
 ---
 author: Labyricorn
 ---
-repository_url: https://git.labyricorn.com/Labyricorn/labyricorn-project-template
+repository_url: https://git.labyricorn.com/Labyricorn/TalkBox
 ---
 default_branch: main
 ---
-tags: template, lektor, python
+tags: tts, voice-cloning, stt, whisper, mcp, tauri, react, fastapi, rust, python
 ---
 body:
 
-Starter template providing the standard .labyricorn/ publishing records, assistant instructions, devlog structure, and repository tooling for publication on Labyricorn.
+TalkBox is a local-first AI voice studio combining high-fidelity speech synthesis, zero-shot voice cloning, global dictation with synthetic paste, and Model Context Protocol (MCP) voice I/O.
+
+### Highlights
+
+- **Multi-Engine Speech Generation**: Supports 7 TTS engines (Qwen3-TTS, Qwen CustomVoice, LuxTTS, Chatterbox Multilingual, Chatterbox Turbo, HumeAI TADA, Kokoro) covering 23 languages.
+- **Voice Cloning & Profiles**: Zero-shot voice cloning from reference audio samples, custom effects chains, and personality prompt attachments.
+- **Global Dictation**: Whisper-backed push-to-talk and toggle dictation anywhere on macOS, Windows, and Linux with focus-aware automatic pasting.
+- **Agent Voice Output (MCP)**: Streamable HTTP and stdio MCP server (`http://127.0.0.1:17494/mcp`) exposing `talkbox.speak`, `talkbox.transcribe`, `talkbox.list_captures`, and `talkbox.list_profiles` for agent integrations.
+- **Native & Local Performance**: Built on Tauri v2 (Rust) and React/TypeScript frontend with Python FastAPI backend running locally on Apple Silicon (MLX), NVIDIA (CUDA), AMD (ROCm), DirectML, or CPU.