[Kisahime]

Summary

Booth quality-of-life from PLAN-v3 Phase 4. Stacked on #10, which has merged, so this targets main.

• V3-P4-01 Optional COHOST_CONTROL_KEY is accepted as X-Cohost-Token only on /api/interrupt, /api/tts/mute, /api/ptt, /api/marker, /api/mood, and /api/profile. /api/persona and other writes still need the per-launch session token. Curl and Stream Deck examples are in the README and .env.example.
• V3-P4-02 A profile may set tts_voice, length_scale, and persona_file. Switching profiles swaps them and reuses the existing voice-download progress path. An unknown tts_voice is rejected when settings load. Shipped Just chatting and Focus game profiles are unchanged.
• V3-P4-03 Every remembered transcript, chat, and alert line is appended to data/sessions/<session>.jsonl. A new session id rotates the file, retention pruning deletes old files, and Forget rewrites the logs to drop that viewer. The dashboard has a Download transcript button.
• V3-P4-04 chat.custom_commands posts fixed text with {user} filled in. Each command has its own cooldown, is added to the IRC allowlist, and does not call the model or shoutout. The shipped map is empty.
• V3-P4-05 The last 50 samples of STT, first token, first audio, and chat send are kept. Health exposes timings_p50 and timings_p95. The dashboard warns when first-audio p95 is over 2.5 s and links to the VRAM tips.

Already true

The six booth routes, last-reply timings, voice download progress, and Forget on memory.json were already in place. This phase extends them. !lurk with no custom-command entry still stays an unhandled command.

Testing

• ruff check src tests passed.
• PYTHONPATH=/workspace .venv/bin/python -m pytest — 132 passed, coverage 75.73% (floor 72).
• Dashboard check: switching to the Kristin profile changed the hint and Voice dropdown to en_US-kristin-medium; the Systems line showed p50/p95 and the 2.5 s warning; Download transcript saved data/sessions/<session>.jsonl.

phase4-booth-qol.mp4

Needs owner

None beyond the existing V3-P0 list.

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