Drift-audit Group 8 (final item). _fire_reminders previously gated on the
base row (reminder_sent_at IS NULL AND start_dt > now), so a recurring event
reminded at most once ever — once the first occurrence passed, no future
occurrence qualified.
Now recurring events are evaluated every sweep against their next occurrence
(rrulestr.after(now)), and reminder_sent_at stores the start of the occurrence
last reminded about. Each new occurrence has a distinct marker, so it re-arms
and fires exactly once per occurrence. One-shot events keep the classic
NULL gate. Also adds the deleted_at filter so trashed events stop reminding.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
bvandeusen
2c929a0435