Module session_signals 

Auto-tracked session-level state signals.

SessionSignals is called on every SessionEvent and transparently updates keys under the session: prefix in the shared State. The router touches the activity timestamp for audio and text inline; the telemetry lane handles every event that writes state.

Hot-path timestamps use AtomicU64 (nanos since start) instead of Mutex<Instant>, eliminating per-event mutex contention. Derived timing signals (silence_ms, elapsed_ms, remaining_budget_ms) are flushed periodically via flush_timing() rather than on every event.

Structs

SessionSignals

Tracks session-level signals automatically from events.

Enums

SessionType

Session type determines the server-side duration limit.