feat(db): archive lifecycle queries, immediate-hide filters, move support

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.

internal/database/querier.go

@@ -347,6 +347,10 @@ type Querier interface {
 	ListDeletedAnnotationsForBook(ctx context.Context, arg ListDeletedAnnotationsForBookParams) ([]ListDeletedAnnotationsForBookRow, error)
 	ListDevicesByType(ctx context.Context, deviceType string) ([]Devices, error)
 	ListDevicesByUser(ctx context.Context, userID pgtype.UUID) ([]Devices, error)
+	// Items hidden from libraries: either missing from disk (waiting on the
+	// second scan that archives them) or already archived and pending purge.
+	// Feeds the admin archived-items page.
+	ListHiddenMediaItems(ctx context.Context) ([]ListHiddenMediaItemsRow, error)
 	ListLibraries(ctx context.Context) ([]ListLibrariesRow, error)
 	ListMediaItems(ctx context.Context, arg ListMediaItemsParams) ([]ListMediaItemsRow, error)
 	ListMediaItemsByLibrary(ctx context.Context, libraryID pgtype.UUID) ([]ListMediaItemsByLibraryRow, error)
@@ -366,6 +370,10 @@ type Querier interface {
 	ListUsers(ctx context.Context) ([]ListUsersRow, error)
 	// First consecutive scan that cannot find the file on disk.
 	MarkMediaItemMissing(ctx context.Context, id pgtype.UUID) error
+	// Content reappeared at a new location while the old path vanished: treat as
+	// a move. Repoints the row (and refreshes file-level fields) so reading
+	// history follows the book; archive/missing state is cleared separately.
+	MoveMediaItemFilePath(ctx context.Context, arg MoveMediaItemFilePathParams) error
 	// Manual bulk purge from the library admin page.
 	PurgeAllArchivedMediaItems(ctx context.Context) ([]PurgeAllArchivedMediaItemsRow, error)
 	// Retention sweep at library-scan time: hard-delete archived items older