- C1: Add onError handlers to dismiss/snooze mutations in useAlerts
- C2: Clear snoozed_until when dismissing via update endpoint
- W1: Handle future dates in getRelativeTime
- W2+S3: Add Escape key, aria-expanded, role=menu to SnoozeDropdown
- W4: Remove redundant field_validator (Literal suffices)
- W7: Validate recurrence_rule with Literal['daily','weekly','monthly']
- S2: Clean up delete confirmation setTimeout on unmount
- S6: Cap AlertBanner height with scroll for many alerts
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>