- melo_server.py subprocess (MeloTTS v3 EN-Newest, speed 1.3): line protocol
stdin->stdout, model loaded once, warmup before READY
- src/melo.zig: lifecycle ownership (spawn/kill with inferon), line protocol
client, reply sanitizer (newlines/markdown stripped before synthesis)
- SIGINT/SIGTERM handlers: async-signal-safe kill of whisper/melo/recorder,
default disposition restored + re-raise for truthful exit status
- processUtterance: transcribe->infer->speak chains automatically after
stop-click; mid-pipeline clicks are no-ops; back to idle after reply
- temp cleanup: recording WAV deleted after transcription, TTS WAV after
playback
- whisper: pid() export for signal handler
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Co-Authored-By: Letta Code <noreply@letta.com>