- R2-1: the ConditionRefresh sweeps (RefreshRequired, post-outage recovery) run
under the session's work token, and ShutdownAsync cancels session work first
thing - so a sweep holding the subscription gate against a stalling upstream no
longer eats the whole teardown budget the deletes and close need.
- R2-2: DisposeAsync skips its nested ShutdownAsync when a shutdown already started
for the current lifecycle generation (nothing initialised since), so PostStop's
dispose does not re-wait the gate past its budget. Test: with the gate held, the
shutdown waits (positive control) and the dispose does not wait again; red with
the skip removed.
Refs #743
Claude-Session: https://claude.ai/code/session_01Ub9hGmYLQvn9XETzw7CMsT
Joseph Doherty
d64c77b62d