Keep one cover slot per medium and show the one each surface needs: the
library's shape for the face, square art on audio screens, the ebook slot
for Kobo and OPDS. Legacy covers convert on upgrade or on first read, and a
write that names no slot keeps working for released iOS builds. Also read
the dev client origin from one constant.
When library items are scanned or moved on case-insensitive filesystems, paths with non-standard author or folder capitalization point to the same physical disk entries. Treating previous path spellings as distinct caused scanner, upload, dock, and rename services to fail path-reuse lookups and create duplicate book records.
Introduce path identity helpers to check whether paths resolve to the same underlying filesystem entry, treating matching entries as path updates rather than creating duplicate books.
Closes#1012
Extract dominant color from book covers to apply ambient background tinting in BookDetailView, add cover tinting toggle to display settings, and test cover tint extraction.
Virtual sibling cleanup is now deferred until the final missing pass instead of being handled eagerly during upsert. This ensures that real nested book folders are not prematurely marked as missing before their own candidates can be processed. A new validation step against the disk state guarantees only genuinely missing books are removed.
Closes#170
Core performance overhaul - new library_dir_scan_state schema table persists per-directory
mtimes so unchanged directories are skipped entirely on subsequent scans, reducing filesystem
stat() calls from O(all-files) to O(changed-dirs) for large libraries.
Incremental scan (walk.ts / scanner.service.ts):
- New library_dir_scan_state table (bigint mtime, FK to library_folders ON DELETE CASCADE)
- findBookCandidates / findLooseFileCandidates now accept knownDirMtimes and return WalkResult
(candidates + skippedDirs + unchangedDirs + dirMtimes) instead of bare BookCandidate[]
- Per-dir mtime skip with 3 safety rules: never skip disc dirs, never skip dirs with disc
subdirs, never skip non-root dirs whose parent mtime changed (guards stem-named merging)
- Root directory now also skippable - parent-mtime check conditionally skipped for root since
root-level files are never stem-merged (explicitly excluded in buildBookCandidates)
- Settings hash invalidation: SHA-256 of {allowedFormats, formatPriority, excludePatterns,
organizationMode} forces full scan when settings change or on first scan after server restart
- isInUnchangedDir guard prevents false book-missing marks for skipped dirs
- Math.round() on stat().mtimeMs before storing - fixes bigint rejection of macOS fractional
milliseconds (e.g. 1776138191093.9556) in PostgreSQL
Walk improvements:
- Bounded concurrency: subdirs processed in chunks of 50 to avoid EMFILE on deep trees
- format + role cached on FileStat to avoid re-classifying the same file twice
- statFilesIntoAcc helper extracted to deduplicate parallel stat logic
- skippedDirs set propagated up from permission-denied dirs
ScanJobStore:
- acquireStartLock / releaseStartLock prevent concurrent scan starts for the same library
- markPendingRescan / consumePendingRescan queue a follow-up scan if one arrives while running
waitForStability:
- Accepts optional knownMtimeMs to skip a redundant stat() call when mtime is already known
File event processor (Issue 25, 11, 20):
- Own-book restore: check file's own book before searching all missing books, fixing false
book-moved results when an editor saves with a new inode (atomic-save pattern)
- Settings cache per library avoids repeated DB lookups during reconcile of many missing books
- Partial move guard: verify old file is gone before reassigning inode (multi-file books)
Live notifications (scanner.service.ts / file-watcher.service.ts):
- scanBookFolder now emits scan:books:added via existing WebSocket infrastructure so the
frontend grid updates live when the file watcher adds a book (all 3 code paths covered)
- bufferWatcherNotification() with 30s debounce fires one ScanCompleted notification per
library summarising watcher-driven additions and removals ('Novels updated - 3 added')
- Removals wired in FileWatcherService.process() and reconcile() on book-missing events
- findLibraryName() added to ScannerRepository for notification title lookup
neon