Incident started_at is an isoformat() string (incident_correlator.py,
routers/incidents.py), not a Firestore timestamp like calls. The range
bounds were Dates, which Firestore compares by type, so any date range
returned zero incidents. Bounds are now UTC ISO strings in the same
"+00:00" shape, which order lexicographically by time.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Logan CusanoandClaude Opus 5.5