yellowjacket/.planning/milestones/v1.1-phases/09-scan-cancellation-keyboard-shortcuts/09-VERIFICATION.md

phase, verified, status, score, re_verification, human_verification

phase	verified	status	score	re_verification	human_verification
09-scan-cancellation-keyboard-shortcuts	2026-03-07T15:30:00Z	passed	7/7 must-haves verified	false	test expected why_human Start a library scan with a large folder, click Pause, verify progress freezes, click Resume, verify scan continues Scan pauses immediately at next worker checkpoint, status bar shows 'Scan paused.', Resume continues from where it left off Requires running the app with a real audio library directory to observe real-time scan behavior test expected why_human Start a scan, click Cancel, verify confirmation dialog shows track count and Keep/Discard/Continue options Dialog shows 'Keep X tracks found so far, or discard?', clicking Keep stops the scan but preserves partial results, clicking Discard cancels and shows informational message Dialog rendering, track count accuracy, and database state after cancel require runtime verification test expected why_human Press Space/N/P/Up/Down/Left/Right/S/R/Q/M keys without any text input focused Each key triggers its mapped action (play/pause, next, previous, volume up/down, seek fwd/back, shuffle, repeat, queue toggle, mute) Keyboard event dispatch to actual player/queue requires live playback context test expected why_human Click into search box, type text, verify shortcuts don't fire. Press Escape, verify focus returns to body and shortcuts work again Text appears in search box without triggering player actions. Escape blurs the input. Shadow DOM focus behavior and text input suppression require browser runtime test expected why_human Open Settings > Keyboard Shortcuts, click a shortcut badge, press a new key, verify binding updates. Try a conflicting key, verify warning appears Badge shows 'Press a key combo…', captures new key, saves it. Conflict banner shows with Overwrite/Cancel options. Visual capture UI behavior and conflict resolution flow require interactive testing test expected why_human Rebind a shortcut, restart the app, verify the custom binding persists After restart, the shortcut settings show the custom binding, and pressing the custom key triggers the correct action TOML persistence across app restart requires full app lifecycle

Phase 9: Scan Cancellation & Keyboard Shortcuts Verification Report

Phase Goal: Users can control library scans (cancel/pause/resume) and operate the entire app via keyboard Verified: 2026-03-07T15:30:00Z Status: passed Re-verification: No — initial verification

Goal Achievement

Observable Truths

#	Truth	Status	Evidence
1	CancelScan/PauseScan/ResumeScan methods stop/pause/resume scan workers	✓ VERIFIED	scan_control.go: CancelScan calls cancel() on scanCtx, PauseScan creates blocking channel, ResumeScan closes it. library.go:508: workers call waitIfPaused(scanCtx) before processing. Three scanCtx.Done() select cases (lines 329, 356, 532).
2	Cancelled scans don't corrupt DB — orphan cleanup skipped, batch commits use l.ctx	✓ VERIFIED	library.go:587-594: cancelled := scanCtx.Err() != nil, orphan cleanup wrapped in if !cancelled block. library.go:650: variant generation also skipped on cancel. DB ops use l.ctx (app context), not scanCtx.
3	Default keyboard shortcuts work immediately (Space, arrows, S, R, Q, M, N, P)	✓ VERIFIED	keyboard-shortcut-service.ts: singleton registers document.keydown listener. dispatch() maps all 16 actions to store/Wails calls. shortcuts/config.go:13-38: DefaultBindings returns all 16 bindings. Service imported at frontend/index.ts:28.
4	Shortcuts suppressed in text inputs (except Escape to blur)	✓ VERIFIED	keyboard-shortcut-service.ts:313-321: if (scope === 'text-input') returns early for all keys except Escape which calls blur(). isTextInputFocused checks INPUT (text types), TEXTAREA, contentEditable.
5	User can rebind shortcuts via record-style capture in settings	✓ VERIFIED	shortcut-capture.ts: full record-style component — click enters recording, handleKeydown captures via buildKeyString, dispatches shortcut-change event. config-page.ts:1717-1810: renderShortcutsSection() renders all 16 shortcuts grouped by category with capture widgets.
6	Shortcut conflicts detected and warned about	✓ VERIFIED	config-page.ts:1245-1270: handleShortcutChange calls shortcutsStore.findConflict(). Conflict shows inline banner with Overwrite/Cancel. handleConflictOverwrite unbinds old action then sets new one.
7	Shortcut bindings persist to TOML via Wails bindings	✓ VERIFIED	config/config.go:600-696: GetShortcuts, SetShortcut, SetShortcuts, ResetShortcuts methods exist with Save() calls and event emission. shortcuts/config.go with Bindings map[string]string \toml:"Bindings"`. Config struct has Shortcuts *shortcuts.Config `toml:"Shortcuts"`` at line 34.

Score: 7/7 truths verified

Required Artifacts

Artifact	Expected	Status	Details
backend/library/scan_control.go	CancelScan, PauseScan, ResumeScan, IsScanActive, IsScanPaused methods	✓ VERIFIED	89 lines. All 5 exported methods + unexported waitIfPaused. Proper mutex locking, channel coordination.
backend/events/events.go	LibraryScanCancelled/Paused/Resumed events	✓ VERIFIED	Lines 51-56: all 3 new scan control event constants. ShortcutsConfigChanged at line 31.
frontend/src/events.ts	Generated TypeScript event constants in sync	✓ VERIFIED	Lines 38-40: LibraryScanCancelled/Paused/Resumed. Line 22: ShortcutsConfigChanged.
backend/library/metrics.go	Cancelled bool field on ScanMetrics	✓ VERIFIED	Line 54: Cancelled bool \json:"cancelled"``
backend/shortcuts/config.go	Config, ApplyDefaults, Validate, DefaultBindings	✓ VERIFIED	65 lines. Config struct, 16 default bindings, ApplyDefaults preserves user customizations, Validate is well-formed.
backend/config/config.go	Shortcuts field, GetShortcuts/SetShortcuts/SetShortcut/ResetShortcuts	✓ VERIFIED	Shortcuts field at line 34. Four Wails-bound methods (lines 601-696). applyDefaults at lines 202-206. Validate at lines 91-95.
frontend/src/services/keyboard-shortcut-service.ts	Singleton service with scope resolution	✓ VERIFIED	356 lines. buildKeyString, getDeepActiveElement, isTextInputFocused, resolveScope, dispatch (16 actions), KeyboardShortcutService class with document keydown listener. Exported singleton at line 351.
frontend/src/store/shortcuts-store.ts	Store with Wails persistence and event sync	✓ VERIFIED	190 lines. ShortcutsStore class with getBindings, getKeyForAction, getActionForKey (scope-aware), findConflict, updateBinding, resetAll, setAll. Loads from GetShortcuts, listens to ShortcutsConfigChanged. queueMicrotask coalescing.
frontend/src/store/controllers/shortcuts-controller.ts	ReactiveController for Lit components	✓ VERIFIED	61 lines. Implements ReactiveController with hostConnected/Disconnected, state getter, bindings getter, updateBinding, resetAll.
frontend/src/components/config-page/shortcut-capture.ts	Record-style key capture component	✓ VERIFIED	165 lines. LitElement with recording state, click/keydown/blur handlers, buildKeyString integration, Escape cancel, per-shortcut reset button, CSS with pulse animation.
frontend/src/components/config-page/config-page.ts	Scan control UI + Shortcuts settings section	✓ VERIFIED	Scan buttons (Pause/Resume/Cancel) at lines 1905-1941. Cancel dialog at lines 1978+. Shortcuts section via renderShortcutsSection() at line 1717. SHORTCUT_META with all 16 actions at line 221. Conflict detection at line 1245.
frontend/src/store/index.ts	Shortcuts store and controller exports	✓ VERIFIED	Lines 12-14: shortcutsStore, ShortcutsState, ShortcutsController exported.

Key Link Verification

From	To	Via	Status	Details
scan_control.go	library.go	l.scanCancel, l.scanPauseCh fields on Library struct	✓ WIRED	Library struct has scan control fields (lines 88-92). scan_control.go reads/writes them with mutex. Scan() initializes them (lines 185-209).
library.go	events.go	EventsEmit for scan lifecycle events	✓ WIRED	LibraryScanCancelled emitted at line 684, LibraryScanPaused/Resumed emitted in scan_control.go:36,51.
keyboard-shortcut-service.ts	shortcuts-store.ts	Service reads bindings from store	✓ WIRED	Line 13: imports shortcutsStore. Line 329: shortcutsStore.getActionForKey(keyStr, scope).
shortcuts-store.ts	config/config.go	Wails bindings GetShortcuts/SetShortcut/ResetShortcuts	✓ WIRED	Lines 3-7: imports GetShortcuts, SetShortcut, SetShortcuts, ResetShortcuts. Used in loadFromBackend (line 57), updateBinding (line 152), setAll (line 159), resetAll (line 164).
keyboard-shortcut-service.ts	player-store.ts / queue-store.ts	Action dispatch calls store methods	✓ WIRED	Lines 14-15: imports playerStore, queueStore. Line 16: imports Player Wails bindings. dispatch() calls togglePlayback, next, previous, ChangeVolume, Seek, toggleShuffle, cycleRepeat, MuteToggle.
config-page.ts	scan_control.go	Wails bindings CancelScan/PauseScan/ResumeScan	✓ WIRED	Lines 8-10: imports CancelScan, PauseScan, ResumeScan. Used in handlePauseScan (line 996), handleResumeScan (line 1000), handleCancelKeep (line 1013), handleCancelDiscard (line 1019).
config-page.ts	events.go	EventsOn for scan lifecycle events	✓ WIRED	Lines 892-903: EventsOn for LibraryScanPaused/Resumed/Cancelled registered in connectedCallback.
shortcut-capture.ts	keyboard-shortcut-service.ts	Uses buildKeyString for key normalization	✓ WIRED	Line 3: import { buildKeyString } from '../../services/keyboard-shortcut-service'. Used in handleKeydown (line 85).
config-page.ts	shortcuts-store.ts	ShortcutsController + store methods	✓ WIRED	Line 36-37: imports shortcutsStore and ShortcutsController. Line 218: creates controller instance. Lines 1252, 1269, 1277, 1282, 1294: calls findConflict, updateBinding, resetAll.
Service → App startup	frontend/index.ts	Import triggers instantiation	✓ WIRED	frontend/index.ts:28: import './src/services/keyboard-shortcut-service' — side-effect import initializes singleton.

Requirements Coverage

Requirement	Source Plan	Description	Status	Evidence
SCAN-01	09-01, 09-03	User can cancel an in-progress library scan via a cancel button	✓ SATISFIED	Backend: CancelScan() cancels scanCtx. Frontend: Cancel Scan button calls CancelScan() Wails binding after confirmation dialog.
SCAN-02	09-01, 09-03	Cancelled scan stops gracefully without corrupting the database	✓ SATISFIED	Orphan cleanup skipped on cancel (library.go:591-594). Variant generation skipped (library.go:650). Batch commits use l.ctx not scanCtx — in-flight transactions complete. ScanMetrics.Cancelled set to true.
SCAN-03	09-01, 09-03	User can pause a library scan and resume it without re-scanning processed files	✓ SATISFIED	PauseScan creates blocking channel, workers block at waitIfPaused. ResumeScan closes channel, workers continue. Frontend Pause/Resume buttons toggle correctly. Already-processed files remain processed.
KEY-01	09-02	Default keybindings work out of box	✓ SATISFIED	16 default bindings in shortcuts/config.go. Service dispatches all actions: Space, N, P, Up, Down, Left, Right, S, R, M, Q, /, Ctrl+F, Ctrl+A, Enter, Delete. Singleton auto-initialized at app startup.
KEY-02	09-04	User can customize all keyboard shortcuts via a visual settings UI	✓ SATISFIED	Config page has "Keyboard Shortcuts" section with shortcut-capture widgets for all 16 actions. Record-style capture, per-shortcut reset.
KEY-03	09-04	Shortcut conflicts are detected and warned about when rebinding	✓ SATISFIED	handleShortcutChange calls findConflict. Conflict banner shows with Overwrite/Cancel. Overwrite unbinds old action.
KEY-04	09-02	Shortcuts are scoped — different bindings apply based on focused component	✓ SATISFIED	resolveScope() returns text-input/panel:X/global. getActionForKey checks panel-specific bindings first, then global. data-shortcut-scope attribute pattern established. Tracklist actions scoped to panel:track-list.
KEY-05	09-02	Shortcuts are disabled when text input has focus (except Escape to blur)	✓ SATISFIED	handleKeydown: if scope is text-input, only Escape passes through (blurs active element). All other keys suppressed. isTextInputFocused checks INPUT, TEXTAREA, contentEditable.

Anti-Patterns Found

File	Line	Pattern	Severity	Impact
—	—	No anti-patterns found	—	—

No TODOs, FIXMEs, placeholders, stubs, or empty implementations found in any phase 9 files.

Build Verification

Check	Status	Details
go build ./...	✓ PASS	Backend compiles with zero errors
go vet ./...	✓ PASS	No vet warnings
npx tsc --noEmit	✓ PASS	Frontend TypeScript compiles with zero errors
Events sync	✓ PASS	events.ts matches events.go (generated)

Bug Fix Verified

The volume data flow bug found during Plan 05 human verification has been fixed:

• backend/player/player.go:680-689: ChangeVolume() calls emitVolumeChanged() and saveState()
• backend/player/player.go:696-705: MuteToggle() calls emitVolumeChanged() and saveState()

Human Verification Required

6 items require human testing to fully confirm runtime behavior. All automated/structural checks pass. See frontmatter for detailed test procedures.

1. Scan pause/resume flow — Real-time pause behavior with actual audio files
2. Cancel confirmation dialog — Dialog rendering, track count accuracy, database state
3. Default keyboard shortcuts — Key dispatch to actual player/queue in live context
4. Text input suppression — Shadow DOM focus behavior in browser runtime
5. Shortcut rebinding UI — Visual capture and conflict resolution flow
6. Shortcut persistence — TOML persistence across full app restart

Gaps Summary

No gaps found. All 7 observable truths verified. All 12 artifacts exist, are substantive (not stubs), and are properly wired. All 10 key links verified with grep evidence. All 8 requirements (SCAN-01/02/03, KEY-01/02/03/04/05) satisfied. Backend and frontend build cleanly. No anti-patterns detected.

---

Verified: 2026-03-07T15:30:00Z Verifier: Claude (gsd-verifier)