⚡ perf(vscode): 代码阅读预览发给页面的块带内容指纹：扩展端按卡片内容、在源码里占的地方连同子块的指纹算摘要，页面按指纹认出没变的块沿用原来的对象，不再逐块深比内容，5126 行的文档到了比对 10.6ms → 0.4ms

vscode/webview-ui/src/codeReader/TextPreview.test.tsx

@@ -10,7 +10,7 @@ import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { DefinitionPeeks, linkPeekSource } from './definitionPeek'
 import { DiffText } from './DiffText'
 import { commentLinkOf } from './repoLink'
-import { NO_SPAN } from './testBlocks'
+import { hashed, NO_SPAN } from './testBlocks'
 import { MarkdownKindContext, TextPreview } from './TextPreview'
 
 let container: HTMLDivElement
@@ -135,7 +135,7 @@ describe.each(['TextPreview', 'DiffText'] as const)('%s 的 Markdown 页面元
     const peek: DefinitionPeek = {
       path: 'client.py',
       line: 1,
-      block: { id: '1', anchor: '1', kind: 'class', span: NO_SPAN, attributes: { kind: 'class' }, concepts: [], children: [], translation: [] },
+      block: hashed([{ id: '1', anchor: '1', kind: 'class', span: NO_SPAN, attributes: { kind: 'class' }, concepts: [], children: [], translation: [] }])[0],
       names: [],
     }
     await act(async () => controller.answer(1, peek))