⚡ perf(vscode): 代码阅读预览的卡片位置量过就记着，内容或大小变了才重量：粘性标题、记滚动位置、上报可见行、跳转按顶层块二分找，滚动时不再每帧量全部卡片，滚动回调里也不读会逼排版的位置

vscode/webview-ui/src/codeReader/useOccurrences.ts

@@ -145,7 +145,7 @@ export function useOccurrences(version: number | undefined, translatorId: string
     }
     const onPointer = (): void => keyScroll.forget()
     const onScroll = (event: Event): void => {
-      const back = keyScroll.scrolled(scrollPosition(), event.timeStamp)
+      const back = keyScroll.scrolled(event.timeStamp, scrollPosition)
       if (back)
         scrollBack(back, position => keyScroll.own(position))
     }