pymumble passes a User object, not a dict. The isinstance(user, dict)
check returned False, setting name to None and silently discarding
every voice packet. Use try/except for dict-like access instead.
When [voice] trigger is set in config, the bot continuously listens and
transcribes voice. Speech starting with the trigger word is stripped and
echoed back via TTS. Non-triggered speech is silently discarded unless
!listen is also active.
Whisper STT: buffers incoming voice PCM per user, transcribes on
silence gap via local whisper.cpp endpoint, posts results as actions.
Piper TTS: !say fetches WAV from local Piper endpoint and plays via
stream_audio(). 37 tests cover buffering, flush logic, transcription,
WAV encoding, commands, and lifecycle.
