opencode controller a66ec9d364 feat(brain-realtime): translator — tap ⇄ OpenAI Realtime event mapping (spec §4) ...

Pure functions, no I/O, no call state. The OpenAI-side WS client
(Task 5) and the tap-side WS server (Task 9) call these per event.

S4 turn-ownership decision (spec §4.3, load-bearing per ADR-0008)
encoded in build_openai_session_update: turn_detection: null. OpenAI's
server-side VAD is disabled; the FOB reflex loop (step 4) owns
turn-taking; tap playout stays core-authoritative (slice-2 §4.1).

S4 test verifies the load-bearing assertion
(v['session']['turn_detection'] == Null).

Audio is pass-through — OpenAI's PCM base64 (LE i16 24 kHz mono) is
indentical to slice-2's tap PCM wire shape (spec §3.5); decode +
re-encode as a PcmFrame so the playout ring stays byte-aligned for
slice-2's playout-buffer invariants (samples: 480).

2026-06-30 20:39:49 -04:00

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