docs(09-03): complete scan control UI plan

- SUMMARY.md with scan control UI outcomes and deviations - STATE.md updated to plan 4 of 5 (60% progress) - ROADMAP.md updated with 3/5 plan progress
2026-03-06 21:57:47 -05:00
parent 391436927c
commit 0706f804a4
3 changed files with 137 additions and 11 deletions
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+---
+phase: 09-scan-cancellation-keyboard-shortcuts
+plan: 03
+subsystem: ui
+tags: [lit, scan-control, dialog, wails-binding, config-page]
+
+# Dependency graph
+requires:
+  - phase: 09-scan-cancellation-keyboard-shortcuts
+    provides: CancelScan, PauseScan, ResumeScan Wails bindings and scan lifecycle events
+provides:
+  - Pause/Resume/Cancel scan buttons in config page during active scan
+  - Cancel confirmation dialog with Keep/Discard/Continue options
+  - Scan paused/resumed/cancelled event handling in frontend
+affects: [09-scan-cancellation-keyboard-shortcuts]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - "Conditional button rendering based on scan state (scanning/paused toggles button set)"
+    - "Modal dialog overlay with click-outside dismiss via stopPropagation"
+
+key-files:
+  created: []
+  modified:
+    - frontend/src/components/config-page/config-page.ts
+    - frontend/wailsjs/go/library/Library.d.ts
+    - frontend/wailsjs/go/library/Library.js
+
+key-decisions:
+  - "Discard option shows informational message rather than auto-triggering FullRescan — safer for v1.1"
+  - "Scan buttons swap entirely during scan (Pause/Cancel replace Soft Scan/Full Rescan) for clear affordance"
+
+patterns-established:
+  - "Cancel confirmation dialog pattern: overlay + stopPropagation + three-option (keep/discard/continue) design"
+
+requirements-completed: [SCAN-01, SCAN-02, SCAN-03]
+
+# Metrics
+duration: 2min
+completed: 2026-03-07
+---
+
+# Phase 9 Plan 03: Scan Control UI Summary
+
+**Pause/Resume/Cancel scan buttons with modal confirmation dialog wired to backend Wails bindings and scan lifecycle events**
+
+## Performance
+
+- **Duration:** 2 min
+- **Started:** 2026-03-07T02:52:25Z
+- **Completed:** 2026-03-07T02:55:18Z
+- **Tasks:** 1
+- **Files modified:** 3
+
+## Accomplishments
+- Scan buttons dynamically swap between Soft Scan/Full Rescan (idle) and Pause/Cancel (active scan)
+- Pause toggles to Resume when scan is paused, with accent-colored status bar message
+- Cancel shows modal dialog with Keep/Discard/Continue options and track count
+- Event handlers for LibraryScanPaused/Resumed/Cancelled update component state
+- Added CancelScan/PauseScan/ResumeScan Wails binding stubs for TypeScript compilation
+- Added `cancelled` field to frontend ScanMetrics interface
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Add scan control state, event handlers, and UI buttons** - `3914369` (feat)
+
+## Files Created/Modified
+- `frontend/src/components/config-page/config-page.ts` - Scan control state, event handlers, Pause/Resume/Cancel buttons, cancel dialog, CSS styles
+- `frontend/wailsjs/go/library/Library.d.ts` - CancelScan, PauseScan, ResumeScan, IsScanActive, IsScanPaused type declarations
+- `frontend/wailsjs/go/library/Library.js` - CancelScan, PauseScan, ResumeScan, IsScanActive, IsScanPaused runtime bindings
+
+## Decisions Made
+- Discard option shows informational message ("run Full Rescan for clean library") rather than automatically triggering a rescan — safer and less surprising for users
+- Buttons fully swap during scan rather than showing disabled states — clearer UX affordance
+- Cancel dialog uses three options (Keep N tracks / Discard / Continue Scanning) for maximum user control
+
+## Deviations from Plan
+
+### Auto-fixed Issues
+
+**1. [Rule 3 - Blocking] Added Wails binding stubs for scan control methods**
+- **Found during:** Task 1 (imports)
+- **Issue:** CancelScan/PauseScan/ResumeScan not in generated Wails binding files — TypeScript would fail to compile
+- **Fix:** Added function declarations and runtime implementations to Library.d.ts and Library.js
+- **Files modified:** frontend/wailsjs/go/library/Library.d.ts, frontend/wailsjs/go/library/Library.js
+- **Verification:** `npx tsc --noEmit` passes
+- **Committed in:** 3914369 (part of task commit)
+
+**2. [Rule 3 - Blocking] Included untracked shortcut-capture.ts from Plan 02**
+- **Found during:** Task 1 (commit)
+- **Issue:** `shortcut-capture.ts` was created in Plan 02 but not committed; lefthook pre-commit hook included it in this commit
+- **Fix:** File included in commit — it's a valid component from the keyboard shortcuts plan
+- **Files modified:** frontend/src/components/config-page/shortcut-capture.ts
+- **Verification:** TypeScript compiles cleanly
+- **Committed in:** 3914369 (part of task commit)
+
+---
+
+**Total deviations:** 2 auto-fixed (2 blocking)
+**Impact on plan:** Both fixes necessary for compilation. No scope creep.
+
+## Issues Encountered
+None
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- Scan control UI complete, ready for Plan 04 (keyboard shortcut UI) and Plan 05 (integration)
+- All scan control buttons wired to backend Wails bindings
+- Events properly handled for all scan lifecycle states
+
+## Self-Check: PASSED
+
+- All 3 key files verified on disk (config-page.ts, Library.d.ts, Library.js)
+- Task commit found in git log (3914369)
+- Docs commit: 85573e8
+
+---
+*Phase: 09-scan-cancellation-keyboard-shortcuts*
+*Completed: 2026-03-07*