- Add CompactAfterLibraryRemoval on Queue: reloads surviving tracks from DB, resets currentIndex, unloads player if current track was removed, clears shuffle order
- Wire RemovalHooks in app.go OnStartup: StopPlayback → player.UnloadTrack, CompactQueue → queue.CompactAfterLibraryRemoval
- All existing tests pass with no regressions
- Add libraryId, libraryName, queuedCount to ScanProgress interface
- Replace CancelScan import with CancelCurrentScan, CancelAllScans
- Add ScanAllLibraries import and Scan All Libraries button
- Show library name in progress label (Scanning: [Library Name])
- Show queue count below progress bar when libraries queued
- Cancel dialog shows scope choice (Cancel This Library / Cancel All) when queue > 0
- Subscribe to LibraryScanQueued and LibraryScanQueueDrained events
- Track scanQueuedCount state for queue-aware UI behavior
Task 1: Schema, events, and progress types
- Add library_id to CreateAudioFile SQL INSERT and regenerate sqlc code
- Add LibraryScanQueued and LibraryScanQueueDrained event constants
- Regenerate TypeScript events via genevents
- Add LibraryID, LibraryName, QueuedCount to ScanProgress
- Add LibraryID, LibraryName to ScanMetrics
- Add libraryID field to importResult for threading through pipeline
Task 2: Scan queue coordinator and per-library scanning
- Create scan_queue.go with ScanLibrary(id), ScanAllLibraries()
- Add CancelCurrentScan(), CancelAllScans() for queue-aware cancellation
- FIFO scan queue with silent dedup (same library already scanning or queued)
- Refactor Scan() -> scanInternal(libraryID, libraryName, libraryPath)
- Replace GetAllAudioFiles with GetAudioFilesByLibrary for per-library loading
- Thread libraryID through DB writer to set CreateAudioFileParams.LibraryID
- drainQueue auto-starts next queued library or emits LibraryScanQueueDrained
- Pause freezes current scan AND queue
- Add GetScanQueueLength() and QueuedLibraryNames() for UI
- Mark CancelScan() and Scan() as deprecated
On existing databases, CREATE TABLE IF NOT EXISTS audio_files is a no-op
but the standalone CREATE INDEX on library_id would fail because the
column doesn't exist until migration 6 runs. The migration already
creates this index, so removing it from the schema file is correct.
- Add backupDatabase() for timestamped .db file backup before migration
- Add migration6MultiLibrary() with all 14 steps: FK OFF, create libraries table,
insert default library from TOML config, add library_id to audio_files, rebuild
playlist_tracks with SET NULL FK and 6 phantom columns, backfill phantom metadata,
recreate track_metadata VIEW with library_id, FK ON, clean TOML config
- Add readLibraryDirFromTOML() and removeLibraryDirFromTOML() helpers
- Update runMigrations signature to accept dbPath for backup
- Add sentinel library row in NewTestDB for FK constraint satisfaction
- Create _libraries.sql with libraries table (name, path, created_at)
- Add library_id FK column and index to audio_files.sql
- Update playlist_tracks.sql with nullable audio_file_id, SET NULL FK, and 6 phantom columns
- Add af.library_id to track_metadata VIEW
- Regenerate sqlc code for updated schemas
- Fix playlist.go to use sql.NullInt64 for nullable audio_file_id
- Rename milestone from 'Features & Extensibility' to 'Multi-Library Support'
- Replace old phases 10-14 (TAG/SMRT/GAP/MB/LAYOUT/PLUG) with 20 multi-library requirements (LIB/LSCAN/VIEW/PLAY/DATA)
- Move deferred features to Future Requirements
- Update research files with multi-library research (Stack, Features, Architecture, Pitfalls)
- Architecture: hybrid model (library_id on audio_files only), libraries in DB, sequential scanning, phantom tracks
- New playlist-details component with header (back button, playlist icon, title, track count)
- Full track list with all interactions: select, play, context menu, drag, phantom handling
- Drop target support for adding tracks from other views
- Search filtering for tracks within the detail view
- Navigation routing in index.ts for playlist-details view
- Added playlist-details to SEARCHABLE_VIEWS in search-store
lit-virtualizer's flow layout has a scroll error correction mechanism that
calls scrollTo() to fix sub-pixel estimation errors. On large lists (20k+),
even with fixed-height items, floating-point differences from
getBoundingClientRect() (e.g. 49.000003px vs 49px) accumulate across items
and trigger corrections that fight the native scrollbar drag gesture,
causing the thumb to desync from the mouse.
Detect scrollbar drag by checking if mousedown occurs in the scrollbar
gutter (clientX > element clientWidth), then monkey-patch the virtualizer's
_correctScrollError method to discard accumulated errors during drag
instead of calling scrollTo(). Items continue to render/recycle normally
since layout updates are not suppressed -- only the scroll position
corrections are skipped.
The previous fix (fixed CSS height on .track-item) was insufficient because
lit-virtualizer's flow layout defaults to estimating items at 100px tall.
With 20k items, the difference between 100px estimate and 49px actual creates
a ~1M px scroll height that collapses as items get measured, triggering
scroll error corrections (programmatic scrollTo calls) that fight the native
scrollbar during drag.
Setting _itemSize to { height: 49 } via the flow() config ensures the initial
scroll size estimate matches reality, eliminating the scroll error corrections
that caused the scrollbar thumb to desync from the mouse when dragging down.
- Add handleSelectAll bound handler calling selection.selectAll() in all three components
- Register/unregister event listeners in connectedCallback/disconnectedCallback
- Add selectAll() method to SelectionController that selects all items via host interface
- Change app.selectAll dispatch from document.execCommand('selectAll') to CustomEvent('shortcut:select-all')
- SUMMARY.md with task commits and deviation documentation
- STATE.md advanced to Plan 5 of 5 (80% complete)
- ROADMAP.md updated with 4/5 plans progress
- Requirements KEY-02 and KEY-03 marked complete
- Pause/Resume buttons replace Soft Scan/Full Rescan during active scan
- Cancel button shows confirmation dialog with Keep/Discard/Continue options
- Register LibraryScanPaused/Resumed/Cancelled event handlers
- Status bar shows 'Scan paused.' with accent color when paused
- Add CancelScan/PauseScan/ResumeScan Wails binding stubs
- Cancel dialog overlay dismissible by clicking outside or Continue Scanning
- Add cancelled field to ScanMetrics TypeScript interface
- Create 09-02-SUMMARY.md with execution metrics and decisions
- Update STATE.md: advance to plan 3, record metrics
- Mark KEY-01, KEY-04, KEY-05 requirements complete
yonlu