docs(09-05): complete integration testing & verification plan

- Created 09-05-SUMMARY.md documenting build verification and human approval - Updated STATE.md: Phase 9 complete (5/5 plans, 1 phase done) - Updated ROADMAP.md: Phase 9 and all plans marked complete - Documented volume data flow bug fix (bb3fd20) as deviation
2026-03-07 10:08:35 -05:00
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+---
+phase: 09-scan-cancellation-keyboard-shortcuts
+plan: 05
+subsystem: integration
+tags: [integration-testing, verification, scan-control, keyboard-shortcuts, volume-fix]
+
+# Dependency graph
+requires:
+  - phase: 09-scan-cancellation-keyboard-shortcuts
+    provides: All Phase 9 features — scan control backend (09-01), keyboard shortcuts service (09-02), scan control UI (09-03), shortcuts settings UI (09-04)
+provides:
+  - End-to-end verified scan cancellation with pause/resume
+  - End-to-end verified keyboard shortcuts with rebinding and persistence
+  - Volume data flow fix (ChangeVolume/MuteToggle emit events and persist state)
+affects: []
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns: []
+
+key-files:
+  created: []
+  modified:
+    - backend/player/player.go
+
+key-decisions:
+  - "ChangeVolume and MuteToggle must emit VolumeChanged event and call saveState for UI sync"
+
+patterns-established: []
+
+requirements-completed: [SCAN-01, SCAN-02, SCAN-03, KEY-01, KEY-02, KEY-03, KEY-04, KEY-05]
+
+# Metrics
+duration: 3min
+completed: 2026-03-07
+---
+
+# Phase 9 Plan 05: Integration Testing & Verification Summary
+
+**End-to-end verification of scan control and keyboard shortcuts with volume data flow bug fix found and resolved during human testing**
+
+## Performance
+
+- **Duration:** ~3 min (continuation — tasks 1-2 completed across checkpoint)
+- **Started:** 2026-03-07T02:58:00Z
+- **Completed:** 2026-03-07T15:06:00Z
+- **Tasks:** 2
+- **Files modified:** 1 (bug fix during verification)
+
+## Accomplishments
+- Full build verification passed: `go build`, `npx tsc --noEmit`, `go vet`, `go test` all clean
+- Event codegen sync verified (frontend/src/events.ts matches backend)
+- All 5 scan control methods confirmed Wails-bindable (exported on Library struct)
+- All 4 shortcuts config methods confirmed Wails-bindable (exported on Config struct)
+- Human verification of all 23 test scenarios approved
+- Found and fixed volume data flow bug: ChangeVolume/MuteToggle were missing emitVolumeChanged and saveState calls
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Build verification and automated checks** - No commit (verification only, no code changes)
+2. **Task 2: Human verification of all Phase 9 features** - Approved after bug fix
+
+**Bug fix during verification:** `bb3fd20` (fix: emit VolumeChanged event and persist state in ChangeVolume and MuteToggle)
+
+## Files Created/Modified
+- `backend/player/player.go` - Added emitVolumeChanged() and saveState() calls to ChangeVolume() and MuteToggle() methods
+
+## Decisions Made
+- ChangeVolume and MuteToggle must emit VolumeChanged event and call saveState — without this, the frontend volume slider and mute icon don't update when keyboard shortcuts change volume
+
+## Deviations from Plan
+
+### Auto-fixed Issues
+
+**1. [Rule 1 - Bug] ChangeVolume and MuteToggle missing event emission and state persistence**
+- **Found during:** Task 2 (human verification — volume shortcuts didn't update UI)
+- **Issue:** `ChangeVolume()` and `MuteToggle()` in `backend/player/player.go` modified volume/mute state but didn't call `emitVolumeChanged()` or `saveState()`, so the frontend volume slider and mute icon never reflected keyboard-shortcut-driven changes
+- **Fix:** Added `p.emitVolumeChanged()` and `p.saveState()` calls to both methods, matching the pattern used by `SetVolume()` and `SetMuted()`
+- **Files modified:** backend/player/player.go
+- **Verification:** Volume up/down shortcuts now update the slider; mute toggle shortcut now updates the mute icon
+- **Committed in:** bb3fd20
+
+---
+
+**Total deviations:** 1 auto-fixed (1 bug)
+**Impact on plan:** Essential fix for keyboard shortcut → volume UI feedback loop. Without this, volume shortcuts worked but the UI didn't reflect changes.
+
+## Issues Encountered
+None beyond the volume data flow bug documented above.
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- Phase 9 complete — all 8 requirements verified (SCAN-01/02/03, KEY-01/02/03/04/05)
+- Ready for Phase 10 (Tag Editing) or other v1.1 phases
+- Scan control and keyboard shortcuts patterns established for reuse
+
+## Self-Check: PASSED
+
+- [x] backend/player/player.go exists (modified file)
+- [x] Commit bb3fd20 exists (bug fix)
+- [x] All 4 prior plan summaries exist (09-01 through 09-04)
+
+---
+*Phase: 09-scan-cancellation-keyboard-shortcuts*
+*Completed: 2026-03-07*