* fix: prevent deleted scheduled tasks from reappearing after sync
When a scheduled task was deleted, the sync function would see the
remote job missing locally and re-add it, undoing the delete. Fix by
tracking pending deletions in storage so the sync function deletes
them from the backend instead of re-adding them locally.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: use read-modify-write for pending deletions to prevent concurrent clobber
Re-read pendingDeletionStorage before write-back and only remove
resolved IDs, preserving any new entries added by concurrent
removeJob calls during the sync's network I/O.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>