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[eric] dock: tile size holds through minimize/restore (shrink only on overflow, growth waits a settle beat), killing the CLS cluster

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ciregenz
2026-08-06 00:05:21 -07:00
parent 8e148601bd
commit eb69fcaf84
1 changed files with 17 additions and 2 deletions
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frontend/src/app/pages/Dashboard/desktop/useDockLayout.ts
+17 -2
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@@ -83,8 +83,23 @@ export function useDockLayout({ cardCount, actionCount, dividerCount }: DockLayo
(budget - ROOT_PAD * 2 - dividerCount) /
(tileCount + GAP_RATIO * Math.max(0, tileCount + dividerCount - 1)),
);
let tile = Math.min(TILE_MAX, Math.max(TILE_MIN, Number.isFinite(guess) ? guess : TILE_MAX));
while (tile > TILE_MIN && columnHeight(tile, tileCount, dividerCount) > budget) tile -= 1;
let fitted = Math.min(TILE_MAX, Math.max(TILE_MIN, Number.isFinite(guess) ? guess : TILE_MAX));
while (fitted > TILE_MIN && columnHeight(fitted, tileCount, dividerCount) > budget) fitted -= 1;
// Size hysteresis: minimize/restore changes the count, and resizing EVERY tile on each change was
// the dock's layout-shift cluster. The current size holds while it still fits; shrink fires only
// on true overflow, and growth waits for a settle beat so rapid-fire toggles never pump the rail.
const [stableTile, setStableTile] = useState(fitted);
const mustShrink = columnHeight(stableTile, tileCount, dividerCount) > budget;
useEffect(() => {
if (mustShrink) { setStableTile(fitted); return undefined; }
if (fitted !== stableTile) {
const t = window.setTimeout(() => setStableTile(fitted), 300);
return () => window.clearTimeout(t);
}
return undefined;
}, [fitted, stableTile, mustShrink]);
const tile = mustShrink ? fitted : stableTile;
const gap = gapFor(tile);
const scrolls = columnHeight(tile, tileCount, dividerCount) > budget;
// Slack inside the scroll box so a magnified tile grows past the column without the scroll clip cutting it.