The in-verb i_am_blocked(rate_limited) path wrapped RateLimitStateTracker.activate
in a bare contextlib.suppress. A silent activate failure stranded the fleet:
agents were parked in _waiting_records but the provider never entered the tracker,
so the tracker-driven _sweep_rate_limit_probes never probed it and no
_on_probe_success ever resumed them — parked agents stuck in WAITING_LONG.
Fix: (1) replace the bare suppress with a try/except that logs an error event
naming the provider + affected agents; (2) in _sweep_rate_limit_probes, after
probing the tracker-listed set, scan _waiting_records for any rate_limit_lifted
provider the loop did NOT cover and probe it via the time-expiry fallback (empty
state -> probe now) so _on_probe_success resumes the parked agents. The fallback
reads only local memory, so it still resumes when Redis was down at park time
(list_rate_limited_providers failure now falls through to the orphan scan instead
of returning early).
Renn F
a6de1330aa