🐛 fix(vscode): 代码阅读的钉住卡片改成每张卡片都算一层，折叠着、没有子块的高卡片滚到一半也钉在顶上

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

@@ -22,8 +22,12 @@ function limitOf(maxLineCount: number): number {
   return lineLimit(window.innerHeight - pinnedHeight(), STICKY_LINE_HEIGHT, maxLineCount)
 }
 
-/** root 里能钉住的卡片：画出了子层的那些（子层带 data-owner，挂在子行上的子块那层在卡片里面），按页面先后；竖直坐标以筛选栏下沿为 0 */
-function measureScopes(root: HTMLElement): StickyScope[] {
+/**
+ * root 里能钉住的卡片，按页面先后，竖直坐标以筛选栏下沿为 0：画出来了、不在编辑的每一张（BlockCard 带 data-line；删掉的块那张没有），
+ * 折叠着的、没有子块的也算，卡片自己就是一层。下沿算到它画出来的子块的最后（它名下的子层带 data-owner，挂在子行上的子块那层在卡片里面）。
+ * 只留可能钉住的：上沿在钉住的那几行（高 band）以内或更高、下沿还在筛选栏下沿以下
+ */
+function measureScopes(root: HTMLElement, band: number): StickyScope[] {
   const bottoms = new Map<string, number>()
   for (const level of root.querySelectorAll<HTMLElement>('.cr-level[data-owner]')) {
     const owner = level.dataset.owner ?? ''
@@ -31,13 +35,13 @@ function measureScopes(root: HTMLElement): StickyScope[] {
   }
   const base = pinnedHeight()
   const scopes: StickyScope[] = []
-  for (const card of root.querySelectorAll<HTMLElement>('.cr-block[data-id]')) {
+  for (const card of root.querySelectorAll<HTMLElement>('.cr-block[data-line]:not([data-editing])')) {
     const id = card.dataset.id ?? ''
-    const levelBottom = bottoms.get(id)
-    if (levelBottom === undefined)
-      continue
     const rect = card.getBoundingClientRect()
-    scopes.push({ id, depth: depthOf(card), top: rect.top - base, bottom: Math.max(rect.bottom, levelBottom) - base, left: rect.left, right: rect.right })
+    const top = rect.top - base
+    const bottom = Math.max(rect.bottom, bottoms.get(id) ?? rect.bottom) - base
+    if (top < band && bottom >= 0)
+      scopes.push({ id, depth: depthOf(card), top, bottom, left: rect.left, right: rect.right })
   }
   return scopes
 }
@@ -65,7 +69,8 @@ export function useStickyLines(content: RefObject<HTMLElement | null>, maxLineCo
     const update = (): void => {
       frame = 0
       const root = content.current
-      const next = root ? pinnedLines(measureScopes(root), STICKY_LINE_HEIGHT, limitOf(maxLineCount)) : NO_PINNED
+      const limit = limitOf(maxLineCount)
+      const next = root ? pinnedLines(measureScopes(root, limit * STICKY_LINE_HEIGHT), STICKY_LINE_HEIGHT, limit) : NO_PINNED
       setLines(prev => samePinned(prev, next) ? prev : next)
     }
     schedule.current = () => {