Progress Log

Append one entry per session.

2026-03-31 19:10

Item: F001
Summary: Created a dedicated fix worktree, loaded the profiling workflow, and installed dependencies in the fresh checkout after the required smoke bootstrap initially failed to resolve playwright.
Files: docs/agent-runs/mobile-virtuoso-scroll-jank/feature-list.json, docs/agent-runs/mobile-virtuoso-scroll-jank/progress.md
Verification: ./scripts/create-task-worktree.sh fix mobile-virtuoso-scroll-jank, corepack yarn install
Blockers: ./scripts/agent-init.sh --smoke failed before install because the fresh worktree had no local dependency install yet.
Next: Start a branch-scoped dev server, rerun the smoke flow against that URL, then profile the mobile /all feed with the custom RPC.

Item: F001
Summary: Profiled mobile /all with the custom RPC, confirmed Virtuoso row-height mismatch on mobile multiboards, then raised the mobile board-feed default item height and viewport buffer while making the board scroll-state listener passive.
Files: src/views/board/board.tsx, src/views/board/__tests__/board.test.tsx, docs/agent-runs/mobile-virtuoso-scroll-jank/feature-list.json, docs/agent-runs/mobile-virtuoso-scroll-jank/progress.md
Verification: AGENT_APP_URL=http://127.0.0.1:1356 ./scripts/agent-init.sh --smoke, yarn test src/views/board/__tests__/board.test.tsx, yarn test, yarn build, yarn lint, yarn type-check, yarn doctor, playwright-cli mobile /all load-and-scroll check, Playwright mobile /all profiling probe
Blockers: Fresh desktop comparator sessions intermittently failed to hydrate /all rows, so desktop scroll-jank comparison stayed inconclusive even though mobile evidence was sufficient to isolate the board-feed issue.
Next: Ready for user review on codex/fix/mobile-virtuoso-scroll-jank.

Item: F001
Summary: After the first pass still reproduced reverse-scroll stutter, shifted the board feed off the per-scroll getState() path, increased mobile multiboard reverse overscan, and removed duplicate GIF first-frame work inside CommentMedia.
Files: src/views/board/board.tsx, src/views/board/__tests__/board.test.tsx, src/components/comment-media/comment-media.tsx, docs/agent-runs/mobile-virtuoso-scroll-jank/feature-list.json, docs/agent-runs/mobile-virtuoso-scroll-jank/progress.md
Verification: yarn test src/views/board/__tests__/board.test.tsx, playwright-cli mobile /all repro with the custom RPC on http://127.0.0.1:1356, yarn test, yarn type-check, yarn lint, yarn build, yarn doctor
Blockers: Headless scripted scroll traces are noisy for long-task timing, so browser evidence is strongest on reduced remount churn and removal of duplicate GIF thumbnail work rather than a perfectly stable synthetic benchmark.
Next: Have the user retry the exact mobile /all reverse-scroll path on this branch and confirm whether the remaining hitch is gone or narrow any residual stutter further.