⚡ perf(vscode): 代码阅读预览的文档消息里源码和着色只带一份：块不再各带一份连子块在内的整段源码和上色，编辑框按块的编辑范围从整份源码和着色里取，5126 行的消息 4.3MB → 1.9MB

vscode/webview-ui/src/codeReader/BlockTree.tsx

@@ -1,4 +1,5 @@
 import type { CSSProperties, ReactElement, ReactNode } from 'react'
+import type { SourceText } from './blockSource'
 import type { RewriteTool } from './BlockTools'
 import type { DiffTree, FoldedRuns, PlacedRemoved } from './diffView'
 import type { GridSlots } from './PropertyGrid'
@@ -24,6 +25,8 @@ import { foldsByCard, listId, tableId } from './viewState'
 /** 块树里改代码的那部分状态：哪些块在编辑。页面上的块树才有；定义卡片浮窗里的块树没有，卡片只读，不画右上角的按钮 */
 export interface EditState {
   version: number
+  /** 这一版文档的源码和着色：编辑框按块的编辑范围从里面取 */
+  sourceText: SourceText
   editing: ReadonlySet<string>
   /** 刚点了「编辑」、要把光标放进去的块 */
   focusId: string | null
@@ -208,6 +211,8 @@ interface BlockShape {
   focus: boolean
   /** 编辑框每来一份新文档都要对一次内容；不在编辑的卡片不跟着版本重画 */
   version?: number
+  /** 编辑着的卡片才有：这一版文档的源码和着色 */
+  sourceText?: SourceText
   /** 调用树：扩展端标了能看调用树（BlockView.callTree）的块才有棵数 */
   calls?: number
   callOpen: boolean
@@ -229,6 +234,7 @@ function shapeOf(block: BlockView, state: BlockTreeState): BlockShape {
     temporary: state.temporary.has(block.id),
     focus: state.edit?.focusId === block.id,
     version: editing ? state.edit?.version : undefined,
+    sourceText: editing ? state.edit?.sourceText : undefined,
     calls: state.callTree && block.callTree ? state.callTree.counts.get(block.anchor) ?? 0 : undefined,
     callOpen: state.callTree?.openAnchor === block.anchor,
   }
@@ -493,10 +499,11 @@ function BlockCard({ block, shape, ask, rewrite }: { block: BlockView, shape: Bl
         : <span className="w-3.5 shrink-0" />}
       <KindIcon concepts={block.concepts} />
       <div className="min-w-0 flex-1">
-        {edit && shape.version !== undefined
+        {edit && shape.version !== undefined && shape.sourceText
           ? (
               <CodeEditor
                 block={block}
+                sourceText={shape.sourceText}
                 version={shape.version}
                 autoFocus={shape.focus}
                 onAutoFocused={edit.onFocused}