Schema (media_sort_date denormalization):
- Add media_sort_date column to storage.files with DEFAULT created_at
- Add trigger sync_media_sort_date: when file_metadata is upserted,
copies COALESCE(captured_at, created_at) into files.media_sort_date
- Add partial index idx_files_media_timeline on (user_id, media_sort_date DESC)
WHERE NOT is_trashed AND media type -- enables Index Scan + Limit (no Sort)
- copy_folder_tree now copies media_sort_date for copied files
- Remove dead idx_file_metadata_captured (no longer needed)
Query optimization (list_media_files):
- Rewrite to use fi.media_sort_date instead of COALESCE(fm.captured_at,...)
- Eliminates LEFT JOIN file_metadata -- one fewer table touch
- Plan: Limit to Index Scan O(LIMIT) instead of Sort O(N)
Video thumbnail pre-scaling (client + server):
- JS: pre-scale canvas to max 400px before toBlob -- 22x less RAM, 15x less BW
- Rust: fast-path in store_external_thumbnail -- if payload is already
WebP with dims within max_dim, store as-is (zero decode, zero encode)
Diocrafts
05108d3e12