Per operator: skip Web Push; build the rest of reminder delivery. This is
the client-agnostic half — the model + logic that foreground/native
delivery drives.
- notes.recurrence (migration 0022): daily/weekly/monthly/yearly or null.
update_note accepts it (cleared when the reminder is cleared); rides
export/import + sync push. Serialized on the note.
- Pure next_occurrence(remind_at, recurrence, after): the next fire strictly
after `after`, rolling past missed occurrences; _add_months clamps the day
to the target month (Jan 31 → Feb 28).
- POST /api/notes/<id>/reminder/complete — a recurring reminder advances to
its next occurrence; a one-off clears. POST .../reminder/snooze {minutes}
→ remind_at = now + minutes (1 min .. 30 days).
No VAPID / push-subscription / service-worker — foreground + native delivery
land in the UI commit and the native clients.
Tests (DB-free): normalize_recurrence; next_occurrence (daily/weekly/
monthly-clamp/skip-missed/yearly/none); complete + snooze auth-guards.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FRgehjoz7Yv8LkUfADxACm
