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docs(14-03): complete render & store optimization plan

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- Created 14-03-SUMMARY.md with event delegation and store batching results
- Updated STATE.md with plan progress, decisions, and session continuity
- Updated ROADMAP.md with Phase 14 plan progress
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yonlu
2026-03-14 13:56:46 -04:00
parent 74473d4386
commit b514772547
3 changed files with 131 additions and 10 deletions
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.planning/STATE.md
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@@ -23,10 +23,10 @@ See: .planning/PROJECT.md (updated 2026-03-08)
## Current Position
Phase: 14 — Performance Optimization
Plan: 4 of 4 in Phase (Plans 01, 02, 03, 04 complete)
Status: Plan 14-04 awaiting checkpoint — scroll optimization & profiling guide
Progress: ████████████████████ Phase 14 in progress (4/4 plans, checkpoint pending)
Last activity: 2026-03-14 — Completed 14-04 Tasks 1-2, awaiting human-verify checkpoint
Plan: 4 of 4 in Phase (Plans 01, 02, 03 complete; 04 awaiting checkpoint)
Status: Plan 14-03 complete — render & store optimization; 14-04 awaiting checkpoint
Progress: ████████████████████ Phase 14 in progress (3/4 plans complete, 1 checkpoint pending)
Last activity: 2026-03-14 — Completed 14-03 render & store optimization
### Phase Overview
@@ -58,6 +58,7 @@ Last activity: 2026-03-14 — Completed 14-04 Tasks 1-2, awaiting human-verify c
| 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 14-03 P03 | 4 min | 2 tasks | 5 files |
| Phase 14-01 P01 | 3 min | 2 tasks | 7 files |
| Phase 14-04 P04 | 2 min | 2 tasks | 3 files |
@@ -133,6 +134,8 @@ Decisions from v1.0 are archived in PROJECT.md Key Decisions table. Key patterns
| 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 |
| Event delegation via data-index + closest() for virtualizer items | Zero per-item closures in renderItem; all events delegated on virtualizer element |
| changeGeneration counter in library store | Simpler than typed subscriptions; skips requestUpdate on loading-only transitions |
| RAF throttle over debounce for scroll saves | Saves position once per frame during scrolling, not just after stop; prevents lost positions on quick navigation |
| Keep monkey-patch alongside overflow-anchor CSS | CSS overflow-anchor disables browser anchoring but not lit-virtualizer's internal _correctScrollError |
@@ -162,9 +165,9 @@ 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 04 — RAF-throttled scroll position saves, overflow-anchor on queue panel, performance profiling guide. Tasks 1-2 complete, Task 3 is a human-verify checkpoint.
**Where we stopped:** Completed 14-04-PLAN.md Tasks 1-2 — awaiting human-verify checkpoint for scroll smoothness
**Next action:** User verifies scroll smoothness and navigation speed across all views (Task 3 checkpoint)
**What happened:** Executed Phase 14, Plan 03 — event delegation eliminates per-scroll-frame closures, queueMicrotask batching for queue store, changeGeneration counter for library store. Plan 04 Tasks 1-2 were completed earlier, awaiting checkpoint.
**Where we stopped:** Completed 14-03-PLAN.md — Plans 01, 02, 03 complete; 14-04 awaiting human-verify checkpoint
**Next action:** User verifies scroll smoothness and navigation speed across all views (14-04 Task 3 checkpoint)
---
*State initialized: 2026-02-27*
@@ -177,4 +180,4 @@ 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 14-04-PLAN.md Tasks 1-2 (Phase 14 Plan 04 awaiting checkpoint)*
*Last updated: 2026-03-14 — Completed 14-03-PLAN.md (Phase 14 Plan 03 complete)*