Storage behind the scan lifecycle fixes:
- MoveMediaItemFilePath: repoints a row (path, size) and clears archive
state when identical content reappears at a new location.
- ListHiddenMediaItems: archived OR missing rows for the admin
archived-items page; ListMediaItemsByLibraryIncludingArchived (prior
commit) already fed the scanner.
- All user-facing listings now hide missing items immediately, not just
archived ones: ListMediaItems, ListMediaItemsByLibrary,
ListMediaItemsSorted, SearchMediaItems, SearchMediaItemsUnified, the
next_books CTE, library media counts, and the five search autocomplete
value queries gained AND mi.missing_scan_count = 0 next to the
archived_at filter. Purge timing is unchanged (archived_at +
ARCHIVE_RETENTION_DAYS), so the grace period keeps protecting data
while the UI reflects removals on the first scan.
- Detail lookups by id/path/sha stay unfiltered on purpose.