The decorator that instruments any AudioPipe with turn-taking reflexes.
SpeechStarted -> muted=true + barge_in_flush + epoch bump. First fresh
audio_out -> un-mute. SpeechStopped is observational (no toggle). Inbound
audio (on_pcm_frame) is NEVER gated — the brain still hears the caller
during barge; the FOB only kills its OWN playout. loop_driver +
rtc_session byte-identical (seam holds).
barge_epoch is load-bearing THIS slice (spec §6.1, commit 86b7460) — the
local VAD (Task 2b) fires ~0 ms after caller speech; the brain's slower
ASR advisory fires ~300 ms later on the SAME barge; the epoch
disambiguates a fresh re-barge from the late confirmation.
Signed-off-by: Aaron D. Lee <himself@adlee.work>
Aaron D. Lee
488b6ab423