L1 f8cf791491 fix(caldav): don't prune locally-created events on sync (#2706) ...

The CalDAV pull prunes events in the synced calendar+window whose UID the
server didn't just return, to propagate upstream deletions. But CalendarEvent
had no field distinguishing a server-pulled row from a locally-created one, so
the prune also deleted events that were never on the server: events created by
the agent / email triage (which never write back to the server) and UI events
whose best-effort write-back failed. Result: silent, unrecoverable loss of the
user's appointments (hard db.delete, no soft-delete).

Add an 'origin' column to calendar_events (lightweight idempotent migration,
mirroring _migrate_add_calendar_is_utc), set origin='caldav' on rows the sync
inserts/updates, and gate the prune on origin == 'caldav'. Locally-created
events carry origin NULL and are never pruned. On the first sync after the
migration nothing is pruned (all rows NULL until re-marked), erring toward
keeping data.

Fixes #2704

2026-06-05 02:48:03 +02:00

88 KiB

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