diff --git a/.planning/ROADMAP.md b/.planning/ROADMAP.md index 02abf1d..5883c77 100644 --- a/.planning/ROADMAP.md +++ b/.planning/ROADMAP.md @@ -120,7 +120,7 @@ Plans: 3. Render hot paths (renderTrackRow, renderTrackItem) create zero new closures per frame — all event handling uses delegation 4. Store notifications are batched (queueMicrotask) and components only re-render when their relevant data changes 5. A profiling guide documents how to diagnose performance issues using pprof (backend) and DevTools (frontend) -**Plans:** 1/4 plans executed +**Plans:** 2/4 plans executed Plans: - [ ] 14-01-PLAN.md — CSS containment + GPU layer promotion on all scroll containers - [ ] 14-02-PLAN.md — View caching navigation system (replace innerHTML destruction) @@ -144,7 +144,7 @@ Plans: | 11. Per-Library Scan Pipeline | 3/3 | Complete | 2026-03-09 | - | | 12. Library CRUD & Data Integrity | v1.1 | 1/2 | In Progress | - | | 13. Library Views & Phantom Tracks | v1.1 | 0/? | Not started | - | -| 14. Performance Optimization | 1/4 | In Progress| | - | +| 14. Performance Optimization | 2/4 | In Progress| | - | --- *Roadmap created: 2026-02-27* diff --git a/.planning/STATE.md b/.planning/STATE.md index 364dc9e..e32bb3e 100644 --- a/.planning/STATE.md +++ b/.planning/STATE.md @@ -23,10 +23,10 @@ See: .planning/PROJECT.md (updated 2026-03-08) ## Current Position Phase: 14 — Performance Optimization -Plan: 1 of 4 in Phase (Plan 02 complete) -Status: Plan 14-02 complete — view caching navigation system -Progress: ████████████████░░░░ Phase 14 in progress (1/4 plans) -Last activity: 2026-03-14 — Completed 14-02 view caching navigation +Plan: 2 of 4 in Phase (Plans 01, 02 complete) +Status: Plan 14-01 complete — CSS containment & GPU scroll promotion +Progress: ████████████████░░░░ Phase 14 in progress (2/4 plans) +Last activity: 2026-03-14 — Completed 14-01 CSS containment & GPU scroll promotion ### Phase Overview @@ -37,7 +37,7 @@ Last activity: 2026-03-14 — Completed 14-02 view caching navigation | 11. Per-Library Scan Pipeline | Complete (3/3 plans) ✅ | | 12. Library CRUD & Data Integrity | In progress (1/2 plans) | | 13. Library Views & Phantom Tracks | Not started | -| 14. Performance Optimization | In progress (1/4 plans) | +| 14. Performance Optimization | In progress (2/4 plans) | ## Performance Metrics @@ -58,6 +58,7 @@ Last activity: 2026-03-14 — Completed 14-02 view caching navigation | Phase 11-02 P02 | 4 min | 2 tasks | 2 files | | Phase 12-01 P01 | 6 min | 2 tasks | 6 files | | Phase 14-02 P02 | 1 min | 1 task | 1 file | +| Phase 14-01 P01 | 3 min | 2 tasks | 7 files | ## Accumulated Context @@ -128,6 +129,9 @@ Decisions from v1.0 are archived in PROJECT.md Key Decisions table. Key patterns | Primary views cached, detail views ephemeral | Detail views depend on entity IDs that change; caching would show stale content | | Inline style.display toggle over CSS class | Simpler, no specificity issues, empty string restores natural display value | | viewCache bounded at 6 entries | One per primary view — negligible memory since data is already in store caches | +| contain: strict only on .main-panel | Has explicit dimensions (flex: 1, overflow: hidden); elsewhere use layout style to not break flex | +| will-change: transform only on scroll containers | Not on :host — avoids wasting GPU memory on non-scrolling elements | +| content-visibility: auto on album cards with contain-intrinsic-size | Prevents layout shift during scroll while skipping off-screen rendering | ### Warnings (carry forward) @@ -155,9 +159,9 @@ Decisions from v1.0 are archived in PROJECT.md Key Decisions table. Key patterns ### Last Session **Date:** 2026-03-14 -**What happened:** Executed Phase 14, Plan 02 — replaced innerHTML navigation with view caching system. Primary views (tracks, albums, artists, genres, playlists, settings) are now created once and kept in DOM with display toggle instead of destruction/recreation. -**Where we stopped:** Completed 14-02-PLAN.md — Plan 02 of Phase 14 complete -**Next action:** Execute remaining Phase 14 plans (14-01 CSS containment, 14-03 store optimizations, 14-04 rendering optimizations) +**What happened:** Executed Phase 14, Plan 01 — added CSS containment to app shell layout boundaries and GPU-composited scrolling to all 6 scroll-heavy components with content-visibility on album cards. +**Where we stopped:** Completed 14-01-PLAN.md — Plan 01 of Phase 14 complete (Plans 01, 02 done) +**Next action:** Execute remaining Phase 14 plans (14-03 store optimizations, 14-04 rendering optimizations) --- *State initialized: 2026-02-27* @@ -170,4 +174,4 @@ Decisions from v1.0 are archived in PROJECT.md Key Decisions table. Key patterns | 18 | add multi-column metadata display to playlist-details | 2026-03-08 | ce23177 | [18-add-multi-column-metadata-display-to-pla](./quick/18-add-multi-column-metadata-display-to-pla/) | Last activity: 2026-03-08 - Completed quick task 18: add multi-column metadata display to playlist-details -*Last updated: 2026-03-14 — Completed 14-02-PLAN.md (Phase 14 Plan 02 complete)* +*Last updated: 2026-03-14 — Completed 14-01-PLAN.md (Phase 14 Plan 01 complete)* diff --git a/.planning/phases/14-performance-optimization/14-01-SUMMARY.md b/.planning/phases/14-performance-optimization/14-01-SUMMARY.md new file mode 100644 index 0000000..f411f92 --- /dev/null +++ b/.planning/phases/14-performance-optimization/14-01-SUMMARY.md @@ -0,0 +1,103 @@ +--- +phase: 14-performance-optimization +plan: 01 +subsystem: ui +tags: [css-containment, gpu-compositing, will-change, content-visibility, scroll-performance] + +# Dependency graph +requires: [] +provides: + - CSS containment on all app shell layout boundaries + - GPU-composited scrolling on all 6 scroll-heavy components + - content-visibility auto on album cards for off-screen rendering skip +affects: [14-performance-optimization] + +# Tech tracking +tech-stack: + added: [] + patterns: [CSS contain for layout isolation, will-change transform for GPU scroll promotion, content-visibility auto for off-screen rendering skip] + +key-files: + created: [] + modified: + - frontend/index.css + - frontend/src/components/cover-grid/cover-grid-styles.ts + - frontend/src/components/track-list/track-list.ts + - frontend/src/components/queue-panel/queue-panel.ts + - frontend/src/components/artists-view/artists-view.ts + - frontend/src/components/genres-view/genres-view.ts + - frontend/src/components/playlist-view/playlist-view.ts + +key-decisions: + - "contain: strict on .main-panel (has explicit dimensions), layout style elsewhere (avoids breaking flex)" + - "will-change: transform only on scroll containers (not :host) to avoid wasting GPU memory" + - "content-visibility: auto on album cards with contain-intrinsic-size hint to prevent layout shift" + +patterns-established: + - "CSS containment pattern: :host gets contain: layout style; scroll container gets contain: paint + will-change: transform" + - "content-visibility: auto with contain-intrinsic-size for cards in virtualized grids" + +requirements-completed: [PERF-SCROLL-01, PERF-SCROLL-02] + +# Metrics +duration: 3min +completed: 2026-03-14 +--- + +# Phase 14 Plan 01: CSS Containment & GPU Scroll Promotion Summary + +**CSS containment on app shell boundaries + GPU-composited scrolling on all 6 scroll-heavy components with content-visibility on album cards** + +## Performance + +- **Duration:** 3 min +- **Started:** 2026-03-14T17:43:01Z +- **Completed:** 2026-03-14T17:46:24Z +- **Tasks:** 2 +- **Files modified:** 7 + +## Accomplishments +- App shell layout boundaries (content-area, main-panel, sidebar, bottom-bar) isolated with CSS containment to prevent cross-boundary layout recalculation +- All 6 scroll-heavy components (cover-grid, track-list, queue-panel, artists-view, genres-view, playlist-view) now have CSS containment on :host and GPU layer promotion on scroll containers +- Album cards skip rendering when off-screen via content-visibility: auto with intrinsic size hints + +## Task Commits + +Each task was committed atomically: + +1. **Task 1: Add CSS containment to app shell layout boundaries** - `efa06f7` (perf) +2. **Task 2: Add GPU promotion and containment to all scroll containers** - `ac8a52e` (perf) + +## Files Created/Modified +- `frontend/index.css` - CSS containment on .content-area, .main-panel, .main-panel > *, sidebar, .bottom-bar +- `frontend/src/components/cover-grid/cover-grid-styles.ts` - contain + will-change on scroll container, content-visibility on album cards +- `frontend/src/components/track-list/track-list.ts` - contain on :host, contain + will-change on lit-virtualizer +- `frontend/src/components/queue-panel/queue-panel.ts` - contain on :host, contain + will-change on lit-virtualizer +- `frontend/src/components/artists-view/artists-view.ts` - contain on :host, contain + will-change on grid scroll container +- `frontend/src/components/genres-view/genres-view.ts` - contain on :host, contain + will-change on grid scroll container +- `frontend/src/components/playlist-view/playlist-view.ts` - contain on :host, contain + will-change on playlist-list + +## Decisions Made +- Used `contain: strict` only on `.main-panel` (has explicit flex: 1 + overflow: hidden), used `contain: layout style` elsewhere to avoid breaking flex layouts +- Applied `will-change: transform` only to actual scroll containers (not :host elements) to avoid wasting GPU memory on non-scrolling elements +- Added `content-visibility: auto` with `contain-intrinsic-size` hints on album cards to prevent layout shift during scroll + +## Deviations from Plan + +None - plan executed exactly as written. + +## Issues Encountered +None + +## User Setup Required +None - no external service configuration required. + +## Next Phase Readiness +- CSS containment foundation in place for all components +- Ready for Plan 02 (next performance optimization plan in phase 14) + +--- +*Phase: 14-performance-optimization* +*Completed: 2026-03-14* + +## Self-Check: PASSED