New cmd/mavwaked — always-on voice listening client that:
- Captures PCM from arecord subprocess (16kHz mono int16)
- Runs energy-based VAD in 30ms windows (RMS threshold, adaptive floor)
- Buffers utterances (300ms min speech, 800ms silence end, 10s max)
- Sends complete utterances as PushToTalk with Surface=SurfaceVoice (L0)
- Plays reply audio through aplay subprocess
- No new CGo/onnxruntime deps — pure Go
- 10 VAD tests with -race (speech detect, silence, max duration, reset, adaptive floor)
- Makefile build-waked target + Dockerfile integration + alsa-utils runtime dep
kami
e57647c9a3