rebrand: rename VoiceBox to TalkBox throughout codebase

- All 'voicebox'/'Voicebox'/'VOICEBOX' strings replaced with 'talkbox'/'TalkBox'/'TALKBOX'
- Port changed from 17493 to 17494 (avoids conflict with upstream VoiceBox)
- MCP tool namespace: voicebox.* -> talkbox.*
- App bundle ID: sh.voicebox.app -> com.talkbox.app
- Binary names: voicebox-server -> talkbox-server, voicebox-mcp -> talkbox-mcp
- Docker user/group: voicebox -> talkbox
- Database: voicebox.db -> talkbox.db
- Env vars: VOICEBOX_* -> TALKBOX_*
- Asset files renamed: voicebox-logo.* -> talkbox-logo.*, etc.
- External binaries in tauri.conf.json updated to talkbox-server/talkbox-mcp

backend/tests/test_all_models_e2e.py

@@ -96,8 +96,8 @@ def find_binary() -> Optional[Path]:
     is_win = platform.system() == "Windows"
     exe = ".exe" if is_win else ""
     candidates = [
-        DIST_DIR / "voicebox-server-cuda" / f"voicebox-server-cuda{exe}",
-        DIST_DIR / f"voicebox-server{exe}",
+        DIST_DIR / "talkbox-server-cuda" / f"talkbox-server-cuda{exe}",
+        DIST_DIR / f"talkbox-server{exe}",
     ]
     for c in candidates:
         if c.exists() and c.is_file():
@@ -381,7 +381,7 @@ def write_reports(
     json_path.write_text(json.dumps(doc, indent=2))
 
     lines = [
-        f"# Voicebox E2E — {plat} — {started_at.strftime('%Y-%m-%d %H:%M UTC')}",
+        f"# TalkBox E2E — {plat} — {started_at.strftime('%Y-%m-%d %H:%M UTC')}",
         "",
         f"Binary: `{binary}`  ",
         f"Elapsed: {doc['elapsed_seconds']:.1f}s",
@@ -424,8 +424,8 @@ def write_reports(
 # ── Main ─────────────────────────────────────────────────────────────
 
 def parse_args() -> argparse.Namespace:
-    p = argparse.ArgumentParser(description="Voicebox E2E model generation test")
-    p.add_argument("--binary", type=Path, help="Path to voicebox-server binary (overrides auto-detect)")
+    p = argparse.ArgumentParser(description="TalkBox E2E model generation test")
+    p.add_argument("--binary", type=Path, help="Path to talkbox-server binary (overrides auto-detect)")
     p.add_argument("--skip-build", action="store_true", help="Error if binary missing instead of building")
     p.add_argument(
         "--reference-wav",
@@ -516,7 +516,7 @@ def main() -> int:
         print(f"[fixture] reference text: {ref_text!r}", flush=True)
 
     # Tempdir + log path
-    data_dir = Path(tempfile.mkdtemp(prefix="voicebox-e2e-"))
+    data_dir = Path(tempfile.mkdtemp(prefix="talkbox-e2e-"))
     args.output_dir.mkdir(parents=True, exist_ok=True)
     ts = datetime.now(timezone.utc).strftime("%Y%m%d-%H%M%S")
     log_path = args.output_dir / f"server-{ts}.log"