yellowjacket/.planning/phases/11-per-library-scan-pipeline/11-02-SUMMARY.md

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phase: 11-per-library-scan-pipeline plan: 02 subsystem: ui tags: [lit-element, scan-progress, cancel-dialog, per-library, wails-bindings]

Dependency graph

requires:

• phase: 11-per-library-scan-pipeline provides: ScanLibrary, ScanAllLibraries, CancelCurrentScan, CancelAllScans, queue-aware ScanProgress with libraryId/libraryName/queuedCount, LibraryScanQueued/LibraryScanQueueDrained events provides:
• Per-library progress display showing library name and queue count in config-page and library-manager
• Queue-aware cancel dialog with "Cancel This Library" / "Cancel All Scanning" scope choice
• "Scan All Libraries" button in both config-page and library-manager affects: [12-library-crud-data-integrity, 13-library-views-phantom-tracks]

Tech tracking

tech-stack: added: [] patterns: - "Queue-aware cancel dialog: scope choice when queuedCount > 0, single-scan dialog otherwise" - "Library name in progress label: baseLabel + libraryName from ScanProgress" - "Queue draining guard: handleScanComplete defers full reset when queue still has entries"

key-files: created: [] modified: - frontend/src/components/config-page/config-page.ts - frontend/src/components/library-manager/library-manager.ts

key-decisions:

• "Cancel dialog shows two-option scope choice (Cancel This Library / Cancel All) only when queuedCount > 0; single-scan uses existing Keep/Discard/Continue pattern"
• "handleScanComplete defers scanning=false when queue has entries, relying on ScanQueueDrained for final reset"
• "Wails binding stubs already generated by Plan 01 auto-generation; no manual stubs needed"

patterns-established:

• "Queue-aware cancel dialog: conditional dialog content based on scanQueuedCount > 0"
• "Progress library prefix: libraryName from ScanProgress displayed in progress-label"

requirements-completed: [LSCAN-03, LSCAN-04]

Metrics

duration: 4min completed: 2026-03-09

Phase 11 Plan 02: Frontend Scan UI Summary

Per-library progress display with library name and queue count, queue-aware cancel dialog with scope choice, and Scan All Libraries button in both config-page and library-manager

Performance

• Duration: 4 min
• Started: 2026-03-09T20:07:11Z
• Completed: 2026-03-09T20:11:36Z
• Tasks: 2
• Files modified: 2

Accomplishments

• Config-page and library-manager both show "Scanning: [Library Name]" in progress bar during scans
• Queue count displayed as "[N] libraries queued" below progress bar when libraries are queued
• Cancel dialog in config-page shows "Cancel This Library" / "Cancel All Scanning" scope choice when multiple scans queued
• "Scan All Libraries" button added alongside Soft Scan and Full Rescan in both components
• ScanProgress interface updated with libraryId, libraryName, queuedCount in both components
• Event subscriptions for LibraryScanQueued and LibraryScanQueueDrained properly managed

Task Commits

Each task was committed atomically:

1. Task 1: Add Wails binding stubs and update progress/cancel UI in config-page - d01591d (feat)
2. Task 2: Update library-manager component for per-library scan display - d61f122 (feat)

Files Created/Modified

• frontend/src/components/config-page/config-page.ts - Updated ScanProgress interface, replaced CancelScan with CancelCurrentScan/CancelAllScans, added queue-aware cancel dialog with scope choice, progress shows library name and queue count, Scan All Libraries button added
• frontend/src/components/library-manager/library-manager.ts - Updated ScanProgress interface, progress shows library name and queue count, Scan All Libraries button added, queue event subscriptions, scan complete defers reset when queue draining

Decisions Made

• Cancel dialog scope choice: When queuedCount > 0, show "Cancel This Library" (btn-warning) and "Cancel All Scanning" (btn-danger) — no default, user must pick. When queuedCount === 0, keep existing three-option Keep/Discard/Continue pattern but calling CancelCurrentScan instead of deprecated CancelScan.
• Queue drain guard: handleScanComplete checks scanQueuedCount before resetting scanning=false. If queue has entries, only metrics are updated; full reset waits for LibraryScanQueueDrained event.
• Wails binding stubs already present: Plan 01's auto-generation already created all needed stubs (ScanLibrary, ScanAllLibraries, CancelCurrentScan, CancelAllScans, GetScanQueueLength, QueuedLibraryNames) — no manual stub additions needed.

Deviations from Plan

Auto-fixed Issues

1. [Rule 3 - Blocking] Unstaged backend files in git index

• Found during: Task 2 commit
• Issue: Backend Go files (app.go, library.go, rescan.go) were staged in the git index from prior work, causing golangci-lint failures in the pre-commit hook on unrelated code
• Fix: Unstaged the backend files before committing the frontend-only change
• Files modified: None (git index manipulation only)
• Verification: Commit succeeded with frontend-typecheck passing
• Committed in: d61f122 (Task 2 commit)

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Total deviations: 1 auto-fixed (1 blocking) Impact on plan: Minor git workflow issue, no scope creep.

Issues Encountered

None

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Per-library scan UI complete — progress identifies library by name, queue count visible, cancel has scope choice
• Ready for Phase 11 Plan 03 (if exists) or Phase 12 (Library CRUD & Data Integrity)
• Frontend fully wired to backend scan queue API from Plan 01

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Phase: 11-per-library-scan-pipeline Completed: 2026-03-09