- EnsureEventPumpStarted replaces a pump created for an older registry
session (the reopen -> replay window still held the dead session's pump,
so an advise there lost its initial value and the replay skipped it);
RestartEventPumpForReplay keeps a pump already on the current session.
- SubscribeAsync, read-via-subscribe and ReplayAsync also await the
bounded StreamRequested wait before advising, not just the probes.
- TryEnsureEventPumpStarted tolerates a teardown flipping _runtimeStopping
mid-check; the probe hook honours an already-cancelled seed token.
- StreamRequested is documented as narrowing, not closing, the attach race.
- Tests: reopen-window probe test, EventPump.StreamRequested tests, and the
FixRound1 fresh-pump assertion now waits on a positive control.
Claude-Session: https://claude.ai/code/session_01GT67AD99zQQqpLCVm3p7xk
Joseph Doherty
cc1a7ec687