The four reactive session streams RealtimeSessionState merges — structurally satisfied by RealtimeSessionService. Narrowed to an interface so the state (and its unit tests) depend only on the streams, not on the full service / GraphQL import chain.
RealtimeSessionService
Growing user/assistant caption list.
Ephemeral spoken progress narrations.
Progress updates from delegated agent runs.
Terminal delegation results.
The four reactive session streams RealtimeSessionState merges — structurally satisfied by
RealtimeSessionService. Narrowed to an interface so the state (and its unit tests) depend only on the streams, not on the full service / GraphQL import chain.