From e9410e50193a897bfddd25f7ca86e739cdd19133 Mon Sep 17 00:00:00 2001 From: Caleb Allen Date: Wed, 4 Mar 2026 23:18:41 -0500 Subject: [PATCH] docs(08-02): complete virtualizer repeat() directive migration plan --- .planning/REQUIREMENTS.md | 4 +- .planning/STATE.md | 32 ++--- .../08-02-SUMMARY.md | 117 ++++++++++++++++++ 3 files changed, 136 insertions(+), 17 deletions(-) create mode 100644 .planning/phases/08-frontend-performance-ux/08-02-SUMMARY.md diff --git a/.planning/REQUIREMENTS.md b/.planning/REQUIREMENTS.md index 3d4df50..a4c71ce 100644 --- a/.planning/REQUIREMENTS.md +++ b/.planning/REQUIREMENTS.md @@ -46,7 +46,7 @@ Requirements for the consolidation milestone. Each maps to roadmap phases. ### UX - [x] **UX-01**: Visual inconsistencies across components are audited and fixed (spacing, colors, typography, icon sizing follow a consistent pattern) -- [ ] **UX-02**: Frontend rendering for large libraries (10k+ tracks) is smooth — no jank during scrolling, view switching, or search filtering +- [x] **UX-02**: Frontend rendering for large libraries (10k+ tracks) is smooth — no jank during scrolling, view switching, or search filtering ## v2 Requirements @@ -114,7 +114,7 @@ Which phases cover which requirements. Updated during roadmap creation. | TEST-05 | Phase 4: Queue, Config & Player Tests | Complete | | TEST-06 | Phase 5: Database & Library Tests | Complete | | UX-01 | Phase 8: Frontend Performance & UX | Complete | -| UX-02 | Phase 8: Frontend Performance & UX | Pending | +| UX-02 | Phase 8: Frontend Performance & UX | Complete | **Coverage:** - v1 requirements: 26 total diff --git a/.planning/STATE.md b/.planning/STATE.md index 86bea17..c002c4c 100644 --- a/.planning/STATE.md +++ b/.planning/STATE.md @@ -3,12 +3,12 @@ gsd_state_version: 1.0 milestone: v1.0 milestone_name: milestone status: in-progress -last_updated: "2026-03-05T04:15:16Z" +last_updated: "2026-03-05T04:17:06Z" progress: total_phases: 8 completed_phases: 7 total_plans: 17 - completed_plans: 14 + completed_plans: 15 --- # YellowJacket — Consolidation Milestone State @@ -16,17 +16,17 @@ progress: ## Project Reference **Core value:** The music player works reliably and feels solid — every interaction is correct, responsive, and trustworthy. -**Current focus:** Phase 8 in progress — performance plumbing and design tokens (Plan 01) complete. Continuing with frontend polish. +**Current focus:** Phase 8 in progress — Plans 01-02 complete. Virtualizer repeat() migration done. Continuing with frontend polish. **Milestone:** Consolidation (correctness, performance, code quality, UX polish, test coverage) ## Current Position **Phase:** 08-frontend-performance-ux -**Plan:** 1/4 (Plan 01 complete) +**Plan:** 2/4 (Plans 01-02 complete) **Status:** In progress ``` -Phase Progress: [########] 8/8 phases — Phase 8: 1/4 plans complete +Phase Progress: [########] 8/8 phases — Phase 8: 2/4 plans complete ``` ## Performance Metrics @@ -34,8 +34,8 @@ Phase Progress: [########] 8/8 phases — Phase 8: 1/4 plans complete | Metric | Value | |--------|-------| | Phases complete | 7/8 | -| Plans complete | 1/4 (Phase 8) | -| Requirements delivered | 20/26 | +| Plans complete | 2/4 (Phase 8) | +| Requirements delivered | 22/26 | | Tests added | 84 | | Bugs fixed | 9 | | 01-01 duration | 11 min | @@ -54,6 +54,7 @@ Phase Progress: [########] 8/8 phases — Phase 8: 1/4 plans complete | Phase 07 P01 | 5 min | 2 tasks | 2 files | | Phase 07 P02 | 1 min | 1 tasks | 1 files | | Phase 08 P01 | 1 min | 2 tasks | 3 files | +| Phase 08 P02 | 3 min | 2 tasks | 5 files | ## Accumulated Context @@ -88,6 +89,7 @@ Phase Progress: [########] 8/8 phases — Phase 8: 1/4 plans complete | queueMicrotask coalescing over setTimeout | Synchronous microtask batching is more predictable and lower latency than macrotask scheduling | Phase 8 | | 150ms search debounce with instant clear | Balances responsiveness with computation cost; empty clears are immediate for snappy UX | Phase 8 | | :host scoped design tokens | Component-level token scope matches Lit's shadow DOM encapsulation model | Phase 8 | +| Inline repeat() keys over gridKeyFunction | Dead method removal; key logic is cleaner inline in repeat() calls | Phase 8 | ### TODOs @@ -131,18 +133,18 @@ None currently. ### Last Session **Date:** 2026-03-05 -**What happened:** Executed Phase 8 Plan 01 — performance plumbing and design tokens -**Where we stopped:** Completed 08-01-PLAN.md (2 tasks, all verification passed). Phase 8: 1/4 plans complete. -**Next action:** Execute Phase 8 Plan 02 +**What happened:** Executed Phase 8 Plan 02 — virtualizer repeat() directive migration +**Where we stopped:** Completed 08-02-PLAN.md (2 tasks, all verification passed). Phase 8: 2/4 plans complete. +**Next action:** Execute Phase 8 Plan 03 ### Context for Next Session -- Phase 8 Plan 01 complete: queueMicrotask coalescing + search debounce + design tokens -- Library store now coalesces 8+ notifications into 1 per microtask tick -- Design tokens in frontend/src/styles/tokens.css.ts ready for component adoption -- 3 plans remaining in Phase 8 +- Phase 8 Plans 01-02 complete +- All 7 lit-virtualizer instances now use repeat() with stable entity keys +- DOM recycling enabled for scrolling/filtering in large libraries +- 2 plans remaining in Phase 8 --- *State initialized: 2026-02-27* -Last activity: 2026-03-05 - Completed 08-01: queueMicrotask coalescing + search debounce + design tokens +Last activity: 2026-03-05 - Completed 08-02: virtualizer repeat() directive migration *Last updated: 2026-03-05* diff --git a/.planning/phases/08-frontend-performance-ux/08-02-SUMMARY.md b/.planning/phases/08-frontend-performance-ux/08-02-SUMMARY.md new file mode 100644 index 0000000..3ebe62a --- /dev/null +++ b/.planning/phases/08-frontend-performance-ux/08-02-SUMMARY.md @@ -0,0 +1,117 @@ +--- +phase: 08-frontend-performance-ux +plan: 02 +subsystem: ui +tags: [lit, virtualizer, repeat-directive, dom-recycling, performance] + +# Dependency graph +requires: + - phase: 08-frontend-performance-ux + provides: "Phase context with virtualizer component analysis" +provides: + - "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)" +affects: [08-frontend-performance-ux] + +# Tech tracking +tech-stack: + added: [] + patterns: ["repeat() directive with stable keys on all lit-virtualizer instances"] + +key-files: + 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 + +key-decisions: + - "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" + +patterns-established: + - "Virtualizer pattern: always use repeat() with stable entity key as child of lit-virtualizer, keep .items for sizing" + +requirements-completed: [PERF-05, UX-02] + +# Metrics +duration: 3min +completed: 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*