The voice-interruption fix (5081551f0) covered the Python surfaces (CLI +
TUI gateway) but the desktop app has its own mic path in voice-barge-in.ts,
which still had both bugs on Windows:
- HALF-DUPLEX GAP: the barge monitor only opened when TTS playback started;
during LLM generation no mic was listening at all.
- PLAYBACK DEAFNESS: the monitor calibrated its noise floor while the
speakers were already playing TTS, baking bleed into the floor. On
Windows, Chromium echoCancellation does not reliably cancel same-app
output (measured live: quiet floor ~35-50 RMS vs playback bleed
600-1700 RMS), making the trigger unreachable.
Changes mirror tools/voice_mode.full_duplex_listen:
- voice-barge-in.ts: phase-aware full-duplex monitor — quiet-only
calibration (floor held through playback, never recalibrated against
bleed), playback min-trigger clamp + ceiling, 500ms grace on playback
onset only, windowed-majority detection.
- use-voice-conversation.ts: monitor arms at turn submit and spans
generation + playback (ensureBargeMonitor, idempotent). Mid-generation
speech fires the new onInterrupt callback; spoken stop-word during a
barge ends the conversation; submit waits for the interrupt to settle.
- use-composer-voice.ts + composer/index.tsx: plumb onInterrupt: haltRun
(same seam as the Stop button).
Tests: use-voice-conversation.test.tsx (6 tests) covering monitor lifecycle
across generation + playback, mid-generation interrupt, stop-word handling.
npm run typecheck + eslint clean; remaining desktop vitest failures
reproduce on a clean tree (pre-existing Windows env failures).
e0233f8fc5