- Create eventChangeDispatcher.ts: dispatchEventChange + isMeaningfulChange
- D-04: description-only edits are silent; meaningful fields = title/dtstartUtc/dtstartDate/allDay/location
- D-03: actor excluded via ne() + application-level filter; all subs filtered by userId != actorUserId
- D-13: reads only push_subscriptions from MariaDB — no tsdav/Fastmail I/O
- syncCalendar: add optional onChanges callback; populate title from VEVENT SUMMARY on every upsert
- syncCalendar: pre-upsert SELECT to detect add vs update; track changedFields; prune emits deletes
- poller: pass onChanges with actor=cred.userId (external changes from other member)
- outboxWorker.triggerTargetedResync: pass onChanges with actor=userId (this-member writes)
- All 4 eventChangeDispatcher tests + 14 sync tests GREEN
Lucas Berger
30e9de13f9