Add migration columns to media_highlights, media_notes, and media_bookmarks
for cross-device annotation sync:
- dedup_key: SHA-1 of normalized selection text + bucketed position, used
as the stable cross-device identity for annotations
- last_modified_at / last_modified_source: edit clock for LWW resolution
and cross-source conflict detection
- deleted / deleted_at: sticky tombstone columns for delete-wins semantics
with a 30-day TTL before rows are physically purged
- note_text on highlights: stores attached notes from KOReader entries that
have both selected text and a user note
- Location columns on bookmarks (cfi_position, percentage_location,
epubcfi_location, chapter_reference, paragraph_reference)
- device_sync_data JSONB on all three tables: stores per-device native
identifiers (e.g. KOReader pos0/datetime, Kobo bookmark_id) so each
device can locate and manipulate its own copy of an annotation
Add partial unique indexes on (user_id, media_item_id, dedup_key) where
deleted = FALSE to enforce one active annotation per dedup key.
Add tombstone purge indexes on (deleted, deleted_at) for efficient GC.
New queries:
- GetByDedupKey for all three tables (returns active or most-recent tombstone)
- CreateFull / UpdateForSync for all three tables (populate sync columns)
- TombstoneByDedupKey / TombstoneByID for all three tables
- PurgeExpired* for all three tables (GC past TTL)
- GetActiveAnnotationsForBook (filtered union of highlights + notes)
- GetTombstonedAnnotationsForBook (union of all 3 deleted within TTL)
- GetMediaBookmarks with deleted filter
- GetMediaBookmark (singular) with deleted filter
- Added deleted=FALSE filter to GetMediaHighlights, GetAnnotationsForBook
- CreateAutoResolvedSyncConflict (INSERT with resolution_status='auto_resolved')
john-okeefe
2a15effc3e