Message Flows

Voice turn (happy path)

speech-start → speech-end → transcript (final) → llm-chunk* → llm → tts-start → tts-chunk* → tts-complete

* streamed when enabled.

Barge-in

tts-start → user speaks → speech-start → tts-cancelled → transcript → llm-chunk ...

Reconnect

WebSocket reconnect → ready → reconnect { sessionId } → reconnect-ack { success }

Playbook mode

llm-chunk → tool-call-start → tool-call-end → stage-change → llm-chunk → tts-start