From f9cb34675196b6f9d74745b5b2e9ef8c9fcbca65 Mon Sep 17 00:00:00 2001 From: Caleb Allen Date: Sat, 14 Mar 2026 13:46:41 -0400 Subject: [PATCH] docs(14-02): complete view caching navigation plan - Created 14-02-SUMMARY.md with execution results - Updated STATE.md with Phase 14 position and decisions - Updated ROADMAP.md progress for Phase 14 (1/4 plans) --- .planning/ROADMAP.md | 4 +- .planning/STATE.md | 32 +++--- .../14-02-SUMMARY.md | 99 +++++++++++++++++++ 3 files changed, 122 insertions(+), 13 deletions(-) create mode 100644 .planning/phases/14-performance-optimization/14-02-SUMMARY.md diff --git a/.planning/ROADMAP.md b/.planning/ROADMAP.md index 40cd504..02abf1d 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:** 4 plans +**Plans:** 1/4 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 | v1.1 | 0/4 | Not started | - | +| 14. Performance Optimization | 1/4 | In Progress| | - | --- *Roadmap created: 2026-02-27* diff --git a/.planning/STATE.md b/.planning/STATE.md index 7ea179a..364dc9e 100644 --- a/.planning/STATE.md +++ b/.planning/STATE.md @@ -18,15 +18,15 @@ progress: See: .planning/PROJECT.md (updated 2026-03-08) **Core value:** The music player works reliably and feels solid — every interaction is correct, responsive, and trustworthy. -**Current focus:** v1.1 Multi-Library Support — Phase 11 (Per-Library Scan Pipeline) +**Current focus:** v1.1 Multi-Library Support + Performance Optimization ## Current Position -Phase: 12 — Library CRUD & Data Integrity -Plan: 1 of 2 in Phase (Plan 01 complete) -Status: Plan 12-01 complete — backend CRUD API implemented -Progress: ████████████████░░░░ 3/5 phases complete (Phase 12 in progress) -Last activity: 2026-03-12 — Completed 12-01 library CRUD backend API +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 ### Phase Overview @@ -37,6 +37,7 @@ Last activity: 2026-03-12 — Completed 12-01 library CRUD backend API | 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) | ## Performance Metrics @@ -56,6 +57,7 @@ Last activity: 2026-03-12 — Completed 12-01 library CRUD backend API | Phase 11-03 P03 | 10 min | 1 task | 3 files | | 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 | ## Accumulated Context @@ -119,6 +121,14 @@ Decisions from v1.0 are archived in PROJECT.md Key Decisions table. Key patterns | Sentinel errors for all validation per err113 | errLibraryNameEmpty, errLibraryNameTooLong, errLibraryNameDuplicate, errLibraryPathNotExist | | Pre-populate phantom metadata BEFORE cascade delete | Avoids lost join data — playlist_tracks need track metadata after audio_files rows are gone | +### Phase 14 Decisions + +| Decision | Rationale | +|----------|-----------| +| 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 | + ### Warnings (carry forward) - Player lock ordering (`p.mu` before `speaker.Lock()`, goroutine dispatch in beep callback) — carry forward @@ -144,10 +154,10 @@ Decisions from v1.0 are archived in PROJECT.md Key Decisions table. Key patterns ### Last Session -**Date:** 2026-03-12 -**What happened:** Executed Phase 12, Plan 01 — implemented backend Library CRUD API (AddLibrary, RenameLibrary, RemoveLibrary, GetRemovalImpact) with full orphan cleanup pipeline, phantom track preservation, FTS5 rebuild, queue compaction via CompactAfterLibraryRemoval, and RemovalHooks wiring in app.go. -**Where we stopped:** Completed 12-01-PLAN.md — Plan 01 of Phase 12 complete -**Next action:** Execute Phase 12 Plan 02 (Frontend library management UI) +**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) --- *State initialized: 2026-02-27* @@ -160,4 +170,4 @@ 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: 2026-03-12 — Completed 12-01-PLAN.md (Phase 12 Plan 01 complete)* +*Last updated: 2026-03-14 — Completed 14-02-PLAN.md (Phase 14 Plan 02 complete)* diff --git a/.planning/phases/14-performance-optimization/14-02-SUMMARY.md b/.planning/phases/14-performance-optimization/14-02-SUMMARY.md new file mode 100644 index 0000000..4c7792f --- /dev/null +++ b/.planning/phases/14-performance-optimization/14-02-SUMMARY.md @@ -0,0 +1,99 @@ +--- +phase: 14-performance-optimization +plan: 02 +subsystem: ui +tags: [navigation, view-caching, dom, performance, display-toggle] + +# Dependency graph +requires: [] +provides: + - View caching navigation system — primary views created once and visibility-toggled + - viewCache Map with bounded 6-entry cache for primary views + - Ephemeral detail view lifecycle (artist-details, playlist-details, genre-details) +affects: [14-performance-optimization] + +# Tech tracking +tech-stack: + added: [] + patterns: + - "View cache Map for DOM-persistent primary views" + - "display:none/display:'' toggle instead of innerHTML destruction" + - "Ephemeral detail views (remove + create) vs cached primary views" + +key-files: + created: [] + modified: + - frontend/index.ts + +key-decisions: + - "Primary views cached, detail views ephemeral — detail views depend on entity IDs that change per navigation" + - "Inline style.display toggle over CSS class — simpler, no specificity issues, direct JS control" + - "viewCache bounded at 6 entries (one per primary view) — negligible memory overhead" + +patterns-established: + - "View caching: create once, toggle visibility, never destroy primary views" + - "Detail view lifecycle: hide primary view, remove old detail, create new detail" + +requirements-completed: [PERF-NAV-01, PERF-NAV-02] + +# Metrics +duration: 1min +completed: 2026-03-14 +--- + +# Phase 14 Plan 02: View Caching Navigation Summary + +**DOM-persistent view cache replacing innerHTML destruction — primary views created once and visibility-toggled for instant navigation** + +## Performance + +- **Duration:** 1 min +- **Started:** 2026-03-14T17:43:20Z +- **Completed:** 2026-03-14T17:44:52Z +- **Tasks:** 1 +- **Files modified:** 1 + +## Accomplishments +- Replaced innerHTML-based navigation with a view caching system using a `Map` +- Primary views (tracks, albums, artists, genres, playlists, settings) created once and kept in DOM +- Navigation toggles `display:none` / `display:''` instead of destroying and recreating components +- Detail views (artist-details, playlist-details, genre-details) remain ephemeral with proper lifecycle (remove old, create new) +- Scroll positions naturally preserved since DOM is never destroyed +- No virtualizer reinit, no data refetch, no cover art image reload on navigation + +## Task Commits + +Each task was committed atomically: + +1. **Task 1: Implement view caching navigation system** - `ad91043` (perf) + +## Files Created/Modified +- `frontend/index.ts` - Replaced switch/innerHTML navigation with VIEW_TAGS map, viewCache Map, display toggle, and ephemeral detail view lifecycle + +## Decisions Made +- **Primary views cached, detail views ephemeral** — Detail views (artist-details, playlist-details, genre-details) depend on entity IDs/names that change per navigation, so caching them would show stale content. Primary views are stateless navigation targets that benefit from persistence. +- **Inline style.display toggle** — Using `element.style.display = 'none'` / `element.style.display = ''` rather than CSS classes avoids specificity issues and gives direct control. The empty string restores the element's natural display value from CSS (`.main-panel > * { height: 100% }`). +- **viewCache bounded at 6 entries** — One entry per primary view tag in VIEW_TAGS. Memory overhead is negligible since the data each view holds is already in store caches regardless. + +## Deviations from Plan + +None - plan executed exactly as written. + +## Issues Encountered +None + +## User Setup Required +None - no external service configuration required. + +## Next Phase Readiness +- View caching complete — ready for remaining Phase 14 plans (14-01 CSS containment, 14-03 store optimizations, 14-04 rendering optimizations) +- Existing scroll save/restore logic in components preserved as fallback for data invalidation scenarios + +--- +## Self-Check: PASSED + +- ✅ frontend/index.ts exists +- ✅ Commit ad91043 exists + +*Phase: 14-performance-optimization* +*Completed: 2026-03-14*