Duck all PulseAudio sink-inputs (Firefox, Spotify, etc.) before speech,
crossfade the entry tone over the fading media, then restore volumes
after the exit tone. Uses pactl subprocesses for reliable PipeWire
compatibility — pulsectl-asyncio's native protocol writes are silently
dropped by PipeWire's PA compat layer.
New module media_duck.py with MediaDucker class. Unduck is consolidated
into the consumer's finally block to guarantee restoration on all exit
paths (normal, error, cancel, shutdown).
Each project gets a distinct voice from a curated English pool,
assigned via round-robin with gender/accent interleaving for
maximum perceptual contrast between consecutive projects.
- New voice_identity.py: pool filtering, interleaving, persistence
- Round-robin replaces SHA-256 hashing (no collisions until pool
exhaustion at 22 voices)
- Assignments persist to /data/voice-assignments.json across restarts
- speak() and generate_audio() accept optional project= parameter
- MCP roots fallback with 2s timeout for future bidirectional clients
- English-only pool (af_/am_/bf_/bm_/ef_/em_ prefixes)
- af_nicole excluded from auto-assign (whispery), still explicit-ok
- Fix voice blacklist to use full identifiers (am_adam, af_jessica)
CPU-only torch image (~180MB vs 873MB CUDA), PipeWire socket
passthrough for audio playback, SNAC HuggingFace cache volume.
Served at voice.l.supported.systems via caddy-docker-proxy.
