yellowjacket/.planning/milestones/v1.2-phases/18-batch-edit/18-VERIFICATION.md

phase, verified, status, score, gaps, human_verification

phase	verified	status	score	gaps	human_verification
18-batch-edit	2026-03-18T19:00:00Z	passed	10/10 must-haves verified

Phase 18: Batch Edit Verification Report

Phase Goal: Users can efficiently edit shared metadata across multiple tracks at once with clear visual feedback and safe defaults Verified: 2026-03-18T19:00:00Z Status: passed Re-verification: No — initial verification

Goal Achievement

Observable Truths

#	Truth	Status	Evidence
1	Selecting 2+ tracks and clicking Track Details opens a batch summary view showing 'N tracks selected' header	✓ VERIFIED	All 4 views (track-list, cover-grid, queue-panel, playlist-details) branch on filePaths.length === 1 vs else in onContextMenuAction, calling openBatchTrackDetails() → showBatch(). Header renders ${this.batchTracks.length} tracks selected (line 879).
2	Each field shows shared value (if identical) or 'Multiple values' placeholder (if different)	✓ VERIFIED	getMergedFields() (lines 1997–2082) extracts values per-track, computes unique = new Set(values), sets mixed: !allSame. Render shows ${this.countDistinctValues(key)} different values for mixed, actual value otherwise.
3	In edit mode, typing marks field dirty; only dirty fields are sent as TagChanges	✓ VERIFIED	onEditInput() (lines 1983–1990) adds key to editValues on any input. buildBatchChanges() (lines 1819–1878) only includes keys present in editValues. Untouched fields are never in editValues.
4	Clearing a field (empty string) is distinct from 'untouched' — it sends the clear	✓ VERIFIED	buildBatchChanges() checks if (editKey in this.editValues) — an empty string IS in editValues (set by onEditInput), so it's included. Confirmation shows "Clear {label}" for empty values (line 2128).
5	Confirmation dialog appears before save showing fields and track count	✓ VERIFIED	saveBatchEdit() (line 1587) sets showConfirmation = true. renderConfirmation() (lines 1011–1044) shows "Apply changes to N tracks?" with per-field change summary from getConfirmationSummary().
6	During batch save, progress bar and 'N of M tracks' counter visible	✓ VERIFIED	confirmSave() sets batchProgress, registers EventsOn(Events.BatchWriteProgress, ...) (lines 1617–1628). renderBatchProgress() (lines 1046–1072) shows ${progress.current} of ${progress.total} tracks with a CSS-animated progress bar.
7	Cancel button stops batch; already-written tracks keep changes	✓ VERIFIED	cancelBatchWrite() (line 1669) calls CancelBatchWrite() Wails binding. Backend CancelBatchWrite() (lines 207–219) closes cancelBatch channel. BatchWriteTrackTags checks channel before each track (lines 252–262); cancelled tracks are skipped, already-written tracks are not reverted.
8	Partial failures show summary with success count and per-failure details	✓ VERIFIED	renderBatchResult() (lines 1074–1125) shows success/failure counts. Failures displayed in expandable <details> with file name and error per failure. Backend BatchResult.Failures collects per-track errors.
9	Cover art can be set or cleared for all selected tracks at once	✓ VERIFIED	renderBatchCoverArt() calls renderCoverArtEditable() in edit mode (line 769), which provides pick/remove controls. buildBatchChanges() includes cover_art key from pendingCoverArt (set) or clearCoverArt (remove) — same logic as single-track. Backend applies cover_art change per-track via WriteTrackTagsByPath.
10	After batch save completes, dialog returns to read-only summary with refreshed data	✓ VERIFIED	closeBatchResult() (lines 1673–1720) resets result state, calls libraryStore.getTracks() and libraryStore.getAlbums(), re-resolves batchTracks from refreshed data, re-resolves cover art state. Returns to read-only summary.

Score: 10/10 truths verified

Required Artifacts

Artifact	Expected	Status	Details
backend/tagwriter/pipeline.go	BatchWriteTrackTags method, BatchResult type, BatchWriteProgress event emission	✓ VERIFIED	321 lines. Contains BatchWriteTrackTags (line 225), BatchResult (line 27), BatchFailure (line 21), CancelBatchWrite (line 209), cancelBatch channel (line 61), suppressEvents flag (line 62). Emits events.BatchWriteProgress per-track (line 288). go build and go vet pass.
backend/events/events.go	BatchWriteProgress event constant	✓ VERIFIED	Line 74: BatchWriteProgress = "BatchWriteProgress" in "Tag writing events" const block.
frontend/src/events.ts	Auto-generated BatchWriteProgress constant	✓ VERIFIED	Line 53: BatchWriteProgress: "BatchWriteProgress" in generated Events object.
frontend/wailsjs/go/tagwriter/TagWriter.js	Wails bindings for BatchWriteTrackTags and CancelBatchWrite	✓ VERIFIED	Lines 5–6: BatchWriteTrackTags(arg1, arg2). Lines 9–10: CancelBatchWrite().
frontend/wailsjs/go/tagwriter/TagWriter.d.ts	TypeScript declarations	✓ VERIFIED	Line 6: BatchWriteTrackTags(arg1:Array<string>,arg2:tagwriter.TagChanges):Promise<tagwriter.BatchResult>. Line 8: CancelBatchWrite():Promise<void>.
frontend/wailsjs/go/models.ts	BatchResult and BatchFailure types	✓ VERIFIED	Lines 675–720: tagwriter namespace with BatchFailure and BatchResult classes with proper field mapping.
frontend/src/components/track-details/track-details.ts	Batch mode: showBatch(), three-state editing, confirmation, progress, cover art	✓ VERIFIED	2163 lines. Contains showBatch() (line 129), batchMode state (line 86), getMergedFields() (line 1997), buildBatchChanges() (line 1819), renderConfirmation() (line 1011), renderBatchProgress() (line 1046), renderBatchResult() (line 1074), cancelBatchWrite() (line 1669), closeBatchResult() (line 1673).
frontend/src/components/track-list/track-list.ts	Updated context menu with showBatch	✓ VERIFIED	Lines 1444–1449: Branches on filePaths.length === 1. Lines 1493–1527: openBatchTrackDetails() with cover art resolution.
frontend/src/components/cover-grid/cover-grid.ts	Updated context menu with showBatch	✓ VERIFIED	Lines 1528–1532: Branches on filePaths.length === 1. Lines 1588–1625: openBatchTrackDetails() with cover art resolution.
frontend/src/components/queue-panel/queue-panel.ts	Updated context menu with showBatch	✓ VERIFIED	Lines 821–825: Branches on indices.length === 1. Lines 877–921: openBatchTrackDetails() resolves queue tracks to library tracks.
frontend/src/components/playlist-details/playlist-details.ts	Updated context menu with showBatch	✓ VERIFIED	Lines 353–357: Branches on filePaths.length === 1. Lines 453–495: openBatchTrackDetails() with cover art resolution.

Key Link Verification

From	To	Via	Status	Details
track-details.ts	tagwriter/TagWriter.js	import { BatchWriteTrackTags, CancelBatchWrite }	✓ WIRED	Lines 18–20: imports present. BatchWriteTrackTags called at line 1631. CancelBatchWrite called at lines 1163, 1670.
track-list.ts	track-details.ts	trackDetailsDialog.showBatch(tracks, coverArt, coverArtMixed)	✓ WIRED	Line 1522: this.trackDetailsDialog?.showBatch(tracks, coverArt, coverArtMixed)
cover-grid.ts	track-details.ts	trackDetailsDialog.showBatch(tracks, coverArt, coverArtMixed)	✓ WIRED	Line 1620: this.trackDetailsDialog?.showBatch(tracks, coverArt, coverArtMixed)
queue-panel.ts	track-details.ts	trackDetailsDialog.showBatch(tracks, coverArt, coverArtMixed)	✓ WIRED	Line 916: this.trackDetailsDialog?.showBatch(tracks, coverArt, coverArtMixed)
playlist-details.ts	track-details.ts	trackDetailsDialog.showBatch(tracks, coverArt, coverArtMixed)	✓ WIRED	Line 490: this.trackDetailsDialog?.showBatch(tracks, coverArt, coverArtMixed)
track-details.ts	events.ts	EventsOn(Events.BatchWriteProgress, ...)	✓ WIRED	Line 1617: EventsOn(Events.BatchWriteProgress, ...). Line 1664: EventsOff(Events.BatchWriteProgress).
pipeline.go	events.go	EventsEmit(tw.ctx, events.BatchWriteProgress, ...)	✓ WIRED	Line 288: wailsruntime.EventsEmit(tw.ctx, events.BatchWriteProgress, ...). Also emits single TrackMetadataChanged at line 303 after batch completes.
TagWriter.js (Wails)	pipeline.go (Backend)	Wails binding bridge	✓ WIRED	JS calls window['go']['tagwriter']['TagWriter']['BatchWriteTrackTags'] which maps to Go BatchWriteTrackTags method.

Requirements Coverage

Requirement	Source Plan	Description	Status	Evidence
BATCH-01	18-01, 18-02	User can select multiple tracks and open batch editor	✓ SATISFIED	All 4 views branch on selection count; showBatch() opens batch mode in track-details dialog. Same "Track Details" context menu item adapts for multi-select.
BATCH-02	18-02	Batch editor uses three-state field model (keep/set/clear)	✓ SATISFIED	Implicit three-state via editValues dirty tracking: untouched = keep, typed = set, cleared = clear. getMergedFields() shows shared vs mixed values. buildBatchChanges() only sends dirty fields.
BATCH-03	18-01, 18-02	Batch editor shows progress indicator for large selections	✓ SATISFIED	Backend emits BatchWriteProgress per-track. Frontend renders progress bar with "N of M tracks" counter. CSS-animated fill bar. Cancel button wired to CancelBatchWrite().
BATCH-04	18-02	User can set cover art for all selected tracks at once	✓ SATISFIED	Batch edit mode uses same selectCoverArt()/removeCoverArt() controls. buildBatchChanges() includes cover_art key. Backend applies to each track via WriteTrackTagsByPath pipeline.

Anti-Patterns Found

File	Line	Pattern	Severity	Impact
—	—	None found	—	—

No TODO/FIXME/HACK/PLACEHOLDER patterns in modified files. No empty implementations. No console.log-only handlers. All event listeners properly cleaned up with EventsOff. Progress bar and batch result have proper CSS styling (not placeholder). Build and vet pass clean.

Human Verification Required

Human verification was already completed during the phase (Task 3 in Plan 02 was a checkpoint:human-verify gate that was approved). The SUMMARY confirms all batch edit flows were tested in the running app:

1. Batch summary view with merged fields
2. Three-state editing
3. Confirmation dialog
4. Progress bar during batch save
5. Results summary
6. Cover art batch operations
7. Single-track regression check

No additional human verification needed.

Gaps Summary

No gaps found. All 10 observable truths verified. All 11 artifacts exist, are substantive (not stubs), and are properly wired. All 8 key links verified. All 4 requirements (BATCH-01 through BATCH-04) satisfied. Backend compiles and passes vet. No anti-patterns detected.

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Verified: 2026-03-18T19:00:00Z Verifier: Claude (gsd-verifier)