The lifespan shutdown closed OptimalService + the DB, and only THEN did
bootstrap's finally block call orchestrator.stop() — so stop() ran with
the DB already closed. stop() drains fire-and-forget _bg_tasks writes
(respawn_tracker upserts, audit-log rows) and stop_agent finalizes work
sessions / agent state, all needing the DB still open; closing it first
silently dropped those final writes (the durable PM-respawn counter's
last few strikes, the metrics-bearing audit trail tail).
Move orchestrator.stop() into the lifespan shutdown path, BEFORE
close_optimal_service + close_db, guarded by a new get_orchestrator_or_none()
safe accessor (no crash when no orchestrator is wired — tests,
skip_orchestrator). bootstrap's finally-block stop() becomes an idempotent
safety net: stop() gains a _stopped flag (getattr-guarded so __new__-
constructed test instances still stop) so the double-call is a clean no-op,
not a re-stop of already-stopped agents / re-drain of an empty bg set.
Orchestrator.stop() cancelled only the named loop tasks + agents, then
returned, abandoning in-flight _schedule_bg work. An in-flight
_persist_respawn_record upsert dropped at shutdown meant the last few
gate-mutation strikes never reached the DB; restore_respawn_tracker() on
the next start repopulated a stale lower count and the dispatcher re-burned
the full 4-spawn strike threshold against a still-wedged task — the exact
re-burn the durable tracker exists to stop. Audit-log writes (load-bearing
for cycle-time/rework metrics) were similarly dropped.
Add _drain_bg_tasks(): bounded wait (5s default) lets short DB writes
commit before exit (data preserved), then cancels any stuck task past the
deadline so a hang can't wedge shutdown. return_exceptions=True so one
failing bg task doesn't crash the drain. Wrap the stop_agent loop in
try/except + logger.exception so one bad agent can't skip the drain
(re-introducing the data-loss tail). Floor test pins the deadline >= 3s
so a too-short change can't silently drop a legitimate slow write.
Renn F