perf: indexes, query rewrites, caching — fix slow load at 30k+ photos
- Expression index on strftime('%m-%d', date_taken) makes Memories instant
- Composite indexes: (deleted, date_taken), (deleted, starred), (deleted, media_type),
(deleted, place_city), (deleted, camera_model), (collection_id, photo_id)
- Albums: replace window-function queries with GROUP BY + MAX(id) CTE — avoids
materialising 30k rows × 3 times just to pick cover photos
- Library stats + Albums: 30s/60s in-memory cache, invalidated on any write
- Videos: cursor-based pagination (100/page) with IntersectionObserver infinite scroll
- Fix build error: mixed ?? and || operators in MemoriesView track count display
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
nmemmertandClaude Sonnet 4.6
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