Module state 

Session phase finite state machine and shared session state.

SessionPhase — lifecycle phase enum with validated transitions. SessionState — shared state struct (phase, turns, resume handle).

Invalid transitions return Err(SessionError::InvalidTransition). The phase is observable via a watch::Receiver<SessionPhase> channel.

Structs

SessionState

Shared session state, accessible from the SessionHandle.

Enums

SessionPhase

The lifecycle phase of a Gemini Live session.