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edadfcae96
TreeGroup called useStore($layoutTree) to build its right-click menu's move/split directions. That subscribes every zone — and therefore every mounted pane and its entire transcript — to the whole layout tree. A sash drag rewrites the tree once per frame, so dragging the sidebar re-rendered all five tiles' message lists on every pointermove, for a context menu nobody had open. The directions are only read when the menu renders, so read the tree there with .get() instead. Same lazy shape the neighbouring `closable` prop already uses. Measured over one 60px sash drag with five busy tiles: commits 83 -> 12 ChatView 150 -> 10 (4465ms -> 353ms) AuiProvider 9450 -> 630 (9868ms -> 774ms) TreeGroup 180 -> 12 TreeSplit 90 -> 6 Also fixes an observer effect in the harness: idle-cost recorded render attribution *during* the timed gesture, and the counter walks the fiber tree on every commit. That was large enough to hide this 15x reduction behind an unchanged fps, so timing and attribution are separate passes now and `record` defaults off. Adds scripts/diag-drag-churn.mjs — the probe that found this. It reports the transcript chain (who above the messages re-rendered) plus every atom that notified, which is what named TreeGroup instead of leaving it to be guessed at. Notably the atom list came back EMPTY: this was never store churn, so the render-attribution path was the only thing that could have found it. |
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| .. | ||
| cold-start.mjs | ||
| first-token.mjs | ||
| idle-cost.mjs | ||
| index.mjs | ||
| keystroke.mjs | ||
| multitab.mjs | ||
| profile-switch.mjs | ||
| render-churn.mjs | ||
| session-switch.mjs | ||
| stream-history.mjs | ||
| stream.mjs | ||
| submit.mjs | ||
| transcript.mjs | ||