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yellowjacket/.planning/milestones/v1.0-phases/08-frontend-performance-ux/08-02-SUMMARY.md
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yonlu 6ce0661fca chore: complete v1.0 Consolidation milestone 
Archive milestone artifacts:
- milestones/v1.0-ROADMAP.md (full roadmap archive)
- milestones/v1.0-REQUIREMENTS.md (26/26 requirements complete)
- milestones/v1.0-phases/ (8 phase directories with plans, summaries, verifications)

Updated:
- PROJECT.md: full evolution review, all consolidation requirements validated
- ROADMAP.md: collapsed to milestone summary with archive link
- STATE.md: reset for next milestone
- MILESTONES.md: created with stats and accomplishments
- RETROSPECTIVE.md: created with lessons learned

Deleted:
- REQUIREMENTS.md (archived, fresh for next milestone)

8 phases, 17 plans, 34 tasks, 84 tests added, 6 days
2026-03-05 09:34:43 -05:00

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Raw Blame History

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed
phase plan subsystem tags requires provides affects tech-stack key-files key-decisions patterns-established requirements-completed duration completed
08-frontend-performance-ux 02 ui
lit
virtualizer
repeat-directive
dom-recycling
performance
phase provides
08-frontend-performance-ux Phase context with virtualizer component analysis
All 7 lit-virtualizer instances use repeat() with stable keys for efficient DOM reuse
Keyed rendering: FilePath (tracks), album.ID (covers), QueueTrack.id (queue), artist.ID (artists), genre.name (genres)
08-frontend-performance-ux
added patterns
repeat() directive with stable keys on all lit-virtualizer instances
created modified
frontend/src/components/track-list/track-list.ts
frontend/src/components/queue-panel/queue-panel.ts
frontend/src/components/cover-grid/cover-grid.ts
frontend/src/components/artists-view/artists-view.ts
frontend/src/components/genres-view/genres-view.ts
Inline album.ID key in repeat() calls instead of keeping gridKeyFunction method
Use genre.name (lowercase) as key matching Genre interface, not genre.Name from plan
Virtualizer pattern: always use repeat() with stable entity key as child of lit-virtualizer, keep .items for sizing
PERF-05
UX-02
3min 2026-03-05

Phase 8 Plan 02: Virtualizer repeat() Directive Migration Summary

Migrated all 7 lit-virtualizer instances across 5 components to repeat() directive with stable entity keys for efficient DOM recycling during scrolling and filtering

Performance

  • Duration: 3 min
  • Started: 2026-03-05T04:13:34Z
  • Completed: 2026-03-05T04:17:06Z
  • Tasks: 2
  • Files modified: 5

Accomplishments

  • All 7 virtualizer instances now use repeat() with stable keys for DOM node reuse
  • Removed .renderItem and .keyFunction properties from all lit-virtualizer elements
  • Removed dead gridKeyFunction method from cover-grid component
  • Stable keys: FilePath (tracks), QueueTrack.id (queue), album.ID (covers), artist.ID (artists), genre.name (genres)

Task Commits

Each task was committed atomically:

  1. Task 1: Migrate track-list and queue-panel virtualizers - d2d7d8c (perf)
  2. Task 2: Migrate cover-grid, artists-view, and genres-view virtualizers - 1c3514d (perf)

Files Created/Modified

  • frontend/src/components/track-list/track-list.ts - repeat() with FilePath key for track virtualizer
  • frontend/src/components/queue-panel/queue-panel.ts - repeat() with QueueTrack.id key for queue virtualizer
  • frontend/src/components/cover-grid/cover-grid.ts - repeat() with album.ID key for all 3 cover grid virtualizers, removed gridKeyFunction
  • frontend/src/components/artists-view/artists-view.ts - repeat() with artist.ID key
  • frontend/src/components/genres-view/genres-view.ts - repeat() with genre.name key

Decisions Made

  • Inlined album.ID key instead of keeping gridKeyFunction: The gridKeyFunction method was only used for .keyFunction property bindings. Since repeat() takes an inline key function, the method became dead code and was removed for cleanliness.
  • Used genre.name (lowercase) not genre.Name: The Genre interface in genres-view uses lowercase name field, not the Go-model-style Name. Plan referenced genre.Name but actual code uses genre.name.

Deviations from Plan

Auto-fixed Issues

1. [Rule 1 - Bug] Fixed renderGridEntry call signature in cover-grid repeat()

  • Found during: Task 2 (cover-grid migration)
  • Issue: Plan template used (entry, index) => this.renderGridEntry(entry, index) but renderGridEntry only accepts 1 argument (GridEntry), not 2
  • Fix: Changed to (entry) => this.renderGridEntry(entry) for all 3 cover-grid virtualizers
  • Files modified: frontend/src/components/cover-grid/cover-grid.ts
  • Verification: TypeScript compiles without errors
  • Committed in: 1c3514d (Task 2 commit)

2. [Rule 1 - Bug] Corrected genre key from genre.Name to genre.name

  • Found during: Task 2 (genres-view migration)
  • Issue: Plan specified entry.genre.Name but Genre interface uses lowercase name field
  • Fix: Used entry.genre.name as the repeat() key
  • Files modified: frontend/src/components/genres-view/genres-view.ts
  • Verification: TypeScript compiles without errors
  • Committed in: 1c3514d (Task 2 commit)

Total deviations: 2 auto-fixed (2 bugs) Impact on plan: Both fixes necessary for TypeScript correctness. No scope creep.

Issues Encountered

None

User Setup Required

None - no external service configuration required.

Next Phase Readiness

  • All virtualizer components now use repeat() with stable keys
  • Ready for remaining Phase 8 plans (08-03, 08-04)

Phase: 08-frontend-performance-ux Completed: 2026-03-05

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