🐛 fix(vscode): 代码阅读对话里的回答悬停链接时卡片一直闪、盖住链接：回答每次重画都新建 {__html}，React 换了对象就整段重设 innerHTML，弹出定义卡片引起的重画把悬停着的链接换成新元素，卡片按脱离页面的旧链接落到左上角盖住链接，指针下的新链接又重新问卡片、再被换掉，来回闪；回答改用 MarkdownPreview，同一段 HTML 用同一个对象，链接不再被换

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

@@ -237,3 +237,56 @@ describe('复制回答', () => {
     expect(writeText).toHaveBeenCalledExactlyOnceWith('找到了 **3 条**路径')
   })
 })
+
+describe('回答里的链接', () => {
+  let container: HTMLDivElement
+  let root: Root
+
+  beforeEach(() => {
+    vi.stubGlobal('IS_REACT_ACT_ENVIRONMENT', true)
+    container = document.createElement('div')
+    document.body.append(container)
+    root = createRoot(container)
+  })
+
+  afterEach(async () => {
+    await act(async () => root.unmount())
+    container.remove()
+    vi.unstubAllGlobals()
+  })
+
+  const ANSWER = '- [HomeShell.startSessionWith](src/app/home/HomeShell.tsx#HomeShell.startSessionWith)：把首句暂存后跳到编程聊天页'
+
+  async function mount(props: Partial<AskThreadProps>): Promise<void> {
+    await act(async () => root.render(<AskThread history={[]} asks={[]} open={false} profiles={PROFILES} now={NOW} onSelectProfile={() => {}} onAsk={() => {}} onStop={() => {}} onDelete={() => {}} onClose={() => {}} {...props} />))
+  }
+
+  function link(): HTMLAnchorElement {
+    const found = container.querySelector<HTMLAnchorElement>('.cr-qa-answer a')
+    if (!found)
+      throw new Error('回答里没有链接')
+    return found
+  }
+
+  it('展开的历史回答：页面为别的事重画（如弹出定义卡片）、传进等值的新对象时，还是原来那个链接，悬停的那处不被换掉', async () => {
+    const history = (): QaEntryView[] => [{ ...HISTORY[0]!, answer: ANSWER }]
+    await mount({ history: history() })
+    await act(async () => container.querySelector<HTMLButtonElement>('[data-history] .cr-qa-question')!.click())
+    const original = link()
+    for (const now of [NOW + 1, NOW + 2])
+      await mount({ history: history(), now })
+    expect(link()).toBe(original)
+    expect(original.isConnected).toBe(true)
+  })
+
+  it('答完的当前一轮同样；回答的字变了才换成新的链接', async () => {
+    await mount({ open: true, asks: [ask({ status: 'done', text: ANSWER })] })
+    const original = link()
+    await mount({ open: true, asks: [ask({ status: 'done', text: ANSWER })], now: NOW + 1 })
+    expect(link()).toBe(original)
+    expect(original.isConnected).toBe(true)
+    await mount({ open: true, asks: [ask({ status: 'done', text: `${ANSWER}\n- 再往下` })] })
+    expect(original.isConnected).toBe(false)
+    expect(link().textContent).toBe('HomeShell.startSessionWith')
+  })
+})

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

@@ -12,6 +12,7 @@ import { useCopyText } from '@/hooks/useCopyText'
 import { renderMarkdown, renderMarkdownOnce } from './markdown'
 import { answerPreview, relativeTime, unfinished } from './qa'
 import { MAX_IMAGES, pickImages, readImage, transferFiles } from './qaImages'
+import { MarkdownPreview } from './TextPreview'
 import { showInViewport } from './useReveal'
 
 /** 一种对话在界面上怎么称呼：区域的名字、图标、「问过 N 次」、删一条、输入框的提示和名字、回答长出来时的状态 */
@@ -157,7 +158,7 @@ function HistoryItem({ entry, wording, now, onDelete, onOpenImage }: { entry: Qa
       </div>
       <Thumbs urls={entry.images ?? []} onOpen={onOpenImage} />
       {expanded
-        ? <div className="cr-markdown cr-qa-answer" dangerouslySetInnerHTML={{ __html: renderMarkdown(entry.answer, 'answer') }} />
+        ? <MarkdownPreview html={renderMarkdown(entry.answer, 'answer')} className="cr-qa-answer" />
         : (
             <button type="button" className="cr-qa-preview" onClick={toggle}>
               {answerPreview(entry.answer)}
@@ -187,10 +188,10 @@ function CurrentItem({ ask, wording, onOpenImage }: { ask: Ask, wording: ThreadW
       </div>
       <Thumbs urls={ask.images ?? []} onOpen={onOpenImage} />
       {ask.text !== '' && (
-        <div
+        <MarkdownPreview
-          className="cr-markdown cr-qa-answer"
+          html={running ? renderMarkdownOnce(ask.text) : renderMarkdown(ask.text, 'answer')}
-          data-streaming={running ? '' : undefined}
+          className="cr-qa-answer"
-          dangerouslySetInnerHTML={{ __html: running ? renderMarkdownOnce(ask.text) : renderMarkdown(ask.text, 'answer') }}
+          streaming={running}
         />
       )}
       {running && (

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

@@ -25,7 +25,8 @@ export const TextPreview = memo(({ text, className, find }: { text: PreviewText,
 })
 TextPreview.displayName = 'TextPreview'
 
-export function MarkdownPreview({ html, className, find }: { html: string, className?: string, find?: string }): ReactElement {
+export function MarkdownPreview({ html, className, find, streaming }: { html: string, className?: string, find?: string, streaming?: boolean }): ReactElement {
+  // 同一段 HTML 用同一个对象：React 见到新对象就整段重设 innerHTML，里面的链接都换成新元素，悬停着的那个就脱离了页面
   const content = useMemo(() => ({ __html: html }), [html])
-  return <div className={cn('cr-markdown', className)} data-find={find} dangerouslySetInnerHTML={content} />
+  return <div className={cn('cr-markdown', className)} data-find={find} data-streaming={streaming ? '' : undefined} dangerouslySetInnerHTML={content} />
 }