The in-flight streamed reply (token deltas), '' when none.
Sends queued while offline (0.34.0 — the client's queueOffline
option): client.pendingOutbox().length, live-updated. Always 0 on a
client from an older SDK bundle without the offline queue.
Confirm requests that arrived on the stream and haven't been resolved through this view yet. Rebuild after a reload via client.pendingConfirms() — confirm_request events are not replayed.
Rolling transcript, oldest first, capped at transcriptCap.
Immutable view snapshot. A new object per change — safe to hand to useSyncExternalStore / $state / shallowRef without defensive copies.