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Code Issues 52 Pull Requests 4 Actions Packages Projects Releases 12 Wiki Activity

docs(14-04): complete scroll optimization & profiling guide plan

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- SUMMARY.md with task commits, decisions, and metrics
- STATE.md updated with plan progress and session continuity
- ROADMAP.md updated with Phase 14 plan progress
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yonlu
2026-03-14 13:54:36 -04:00
parent d0c05dc1d4
commit 74473d4386
3 changed files with 107 additions and 11 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: 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
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
### Phase Overview
@@ -37,7 +37,7 @@ Last activity: 2026-03-14 — Completed 14-01 CSS containment & GPU scroll promo
| 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 (2/4 plans) |
| 14. Performance Optimization | In progress (4/4 plans, checkpoint pending) |
## Performance Metrics
@@ -59,6 +59,7 @@ Last activity: 2026-03-14 — Completed 14-01 CSS containment & GPU scroll promo
| 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 |
| Phase 14-04 P04 | 2 min | 2 tasks | 3 files |
## Accumulated Context
@@ -132,6 +133,8 @@ 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 |
| 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 |
### Warnings (carry forward)
@@ -159,9 +162,9 @@ 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 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)
**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)
---
*State initialized: 2026-02-27*
@@ -174,4 +177,4 @@ 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 14-01-PLAN.md (Phase 14 Plan 01 complete)*
*Last updated: 2026-03-14 — Completed 14-04-PLAN.md Tasks 1-2 (Phase 14 Plan 04 awaiting checkpoint)*