Muse partials carry no turnId and belong to the most recent speechStart,
and the docs say the model may keep post processing a turn after speechEnd
until speechComplete. Releasing the active turn on speechEnd made any
partial arriving in that window raise and get dropped in ENDPOINTING mode.
The turn now stays active until its speechComplete or final transcript.
A duplicate speechStart for a turn that already stopped used to make that
closed turn active again, so the next turnless PUSH_TO_TALK transcript was
routed to the finished item and dropped.
Turns no longer wait behind each other in a FIFO queue, so an empty
server_vad turn (speechStart then speechEnd with no transcript) cannot
stall every later turn, and a PUSH_TO_TALK speechComplete now closes its
turn without waiting for a speechEnd that never arrives. Each turn keeps
its own idempotent emit state, so late or duplicate speechEnd,
speechComplete and transcript frames are no-ops, and finished turns are
remembered in a bounded map instead of a separate tombstone deque.
The session.created ack and the sanitized error frame are now typed as
members of OpenAIRealtimeEvents, which removes the typing.cast calls
that the strict ruff budget flagged.
Replace the hand-rolled Meta realtime handler with a MetaRealtimeConfig
that plugs into the shared realtime handler and RealTimeStreaming relay.
Clients keep speaking the OpenAI realtime wire: session.update,
input_audio_buffer.append/commit and the OpenAI transcription events.
Unsupported transcription settings are logged and dropped, matching the
Gemini realtime precedent, and the Meta-specific session.mode, keywords,
language_bias, DIARIZATION and speaker extensions are removed.
Drop the MODEL_API_KEY env var in favor of the standard META_API_KEY,
remove the private-logging flag so spend logs record the transcript the
same way other realtime models do, and add per-second pricing for
muse-voice-transcribe-1.0.
The relay now sends raw bytes from transform_realtime_request straight to
the backend after pace_backend_send, and transcription sessions never
trigger response.create.
