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{
"task": "mobile-virtuoso-scroll-jank",
"last_updated": "2026-03-31",
"items": [
{
"id": "F001",
"priority": 1,
"status": "completed",
"description": "Reproduce, profile, and fix mobile-only scroll jank on Virtuoso-backed board feeds, starting with /all using the custom Node RPC.",
"verification": [
"./scripts/agent-init.sh --smoke",
"playwright-cli mobile verification on /all with the custom RPC configured",
"yarn build",
"yarn lint",
"yarn type-check",
"yarn doctor"
],
"files": [
"src/components/comment-media/comment-media.tsx",
"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"
],
"notes": "Work stayed isolated in a dedicated worktree/branch. Profiling confirmed the mobile multiboard Virtuoso feed was underestimating row height and remounting tall rows too aggressively on reverse scroll. A second pass removed board-state snapshotting from the hot scroll path, added stronger reverse-direction overscan for mobile multiboards, and deduplicated GIF first-frame work in CommentMedia. Desktop comparison remained partially inconclusive because fresh desktop sessions sometimes failed to hydrate feed rows."
}
]
}