✨ feat(vscode): 问 AI 收起再展开、重启后接着这块最近的会话问；代码改了对不上的问答不再显示

vscode/src/codeReader/editor/messages.ts

@@ -4,7 +4,6 @@
 
 import type { FileAttribute } from '../attributes'
 import type { BlockView } from '../blockView'
-import type { AnchorStep } from '../qa/anchor'
 import type { RunningAsk } from '../qa/asks'
 import type { Excluded } from './blockFilter'
 
@@ -54,10 +53,9 @@ export interface QaEntryView {
   createdAt: string
 }
 
-/** 挂在一块上的问答。where 是记号拆回的各层（种类和名字），块找不到了时写它原来在哪。 */
+/** 挂在一块上的问答；记号对不上这份文件里任何一块的不显示。 */
 export interface QaThreadView {
   anchor: string
-  where: AnchorStep[]
   entries: QaEntryView[]
 }
 
@@ -79,7 +77,7 @@ export interface QaMessage {
  * filter：整个工作区共用的块筛选；ready 后先于第一份文档发一次，之后任何一个预览改了都发给所有预览
  * qa：这份文件的问答；ready 后发一次，问答、正在答的问题变了再发
  * answer：askId 那个问题的回答长了（text 是到现在为止的全文）、或换了在做的事
- * answerEnd：askId 那个问题答完了：done 带最终的回答、存下的那条的 id 和会话 id（追问接着这个会话），failed 带给人看的原因，stopped 是被叫停
+ * answerEnd：askId 那个问题答完了：done 带最终的回答和存下的那条的 id，failed 带给人看的原因，stopped 是被叫停
  */
 export type ExtensionToWebview
   = | DocumentMessage
@@ -89,7 +87,7 @@ export type ExtensionToWebview
     | { type: 'filter', excluded: Excluded }
     | QaMessage
     | { type: 'answer', askId: string, text: string, activity?: string }
-    | { type: 'answerEnd', askId: string, status: 'done' | 'failed' | 'stopped', text?: string, error?: string, entryId?: string, sessionId?: string }
+    | { type: 'answerEnd', askId: string, status: 'done' | 'failed' | 'stopped', text?: string, error?: string, entryId?: string }
 
 /**
  * edit：把 startLine..endLine 这几行整行替换成 text（扩展端给每行补回原来的缩进）
@@ -99,7 +97,7 @@ export type ExtensionToWebview
  * goToDefinition：⌘ / Ctrl + 点击，跳到 offset 处名字的定义
  * findOccurrences：单击带下标的名字，问它在这份文档里出现在哪几处；id、version 同 probeDefinition
  * setFilter：改块筛选（整份替换），扩展端记下后发 filter 给所有预览
- * ask：问 anchor 那块代码；askId 由 webview 起，回答的消息带回去；resume 是追问时上一次的会话 id
+ * ask：问 anchor 那块代码；askId 由 webview 起，回答的消息带回去；扩展端接着这块最近一次问答的会话问
  * stopAsk：叫停 askId 那个问题，这次不存
  * deleteQa：删掉 anchor 那块下面的一次问答（已经理解了）
  */
@@ -112,6 +110,6 @@ export type WebviewToExtension
     | { type: 'probeDefinition', id: number, version: number, offset: number }
     | { type: 'goToDefinition', version: number, offset: number }
     | { type: 'findOccurrences', id: number, version: number, offset: number }
-    | { type: 'ask', askId: string, anchor: string, question: string, resume?: string }
+    | { type: 'ask', askId: string, anchor: string, question: string }
     | { type: 'stopAsk', askId: string }
     | { type: 'deleteQa', anchor: string, entryId: string }

vscode/src/codeReader/editor/previewEditor.ts

@@ -157,7 +157,7 @@ class Preview {
           askId: event.ask.askId,
           status: end.status,
           ...(end.status === 'failed' && { error: end.error }),
-          ...(end.status === 'done' && { text: end.answer.text, entryId, sessionId: end.answer.sessionId }),
+          ...(end.status === 'done' && { text: end.answer.text, entryId }),
         })
         this.postQa()
       }),
@@ -219,17 +219,17 @@ class Preview {
   }
 
   /**
-   * 问 anchor 那块代码：按最近一次发出去的块树找到它、带上代码上下文交给 CodeQa；resume 是追问时上一次的会话 id。
+   * 问 anchor 那块代码：按最近一次发出去的块树找到它，把完整问题和追问的话都交给 CodeQa，接不接着上次的会话由它定。
    * 找不到这块（代码刚改过、还没重新发）或问不了时，直接回一条失败。
    */
-  private ask(askId: string, anchor: string, question: string, resume: string | undefined): void {
+  private ask(askId: string, anchor: string, question: string): void {
     const at = locate(this.document.uri)
     const subject = at && this.sent && { path: at.key, languageId: this.document.languageId, ...this.sent, anchor }
     const prompt = subject && askPrompt(subject, question)
-    const followUp = subject && resume ? followUpPrompt(subject, question) : undefined
-    const refused = prompt === undefined
+    const followUp = subject && followUpPrompt(subject, question)
+    const refused = prompt === undefined || followUp === undefined
       ? '这块代码刚改过，找不到了。等预览刷新后重新点「问 AI」再问。'
-      : this.owner.qa.ask(this.document.uri, { askId, anchor, question, prompt, ...(resume && followUp && { followUp: { sessionId: resume, prompt: followUp } }) })
+      : this.owner.qa.ask(this.document.uri, { askId, anchor, question, prompt, followUp })
     if (refused !== undefined) {
       this.post({ type: 'answerEnd', askId, status: 'failed', error: refused })
       return
@@ -252,7 +252,7 @@ class Preview {
         await this.push()
         return
       case 'ask':
-        this.ask(msg.askId, msg.anchor, msg.question, msg.resume)
+        this.ask(msg.askId, msg.anchor, msg.question)
         return
       case 'stopAsk':
         this.owner.qa.stop(msg.askId)

vscode/src/codeReader/qa/anchor.test.ts

@@ -3,7 +3,7 @@ import { describe, expect, it } from 'vitest'
 import { toBlockViews } from '../blockView'
 import { createPythonAdapter } from '../languages/python'
 import { WASM_DIR, withBlocks } from '../testSupport'
-import { anchorSteps, BlockAnchors } from './anchor'
+import { BlockAnchors } from './anchor'
 
 const py = createPythonAdapter(WASM_DIR)
 
@@ -83,15 +83,6 @@ describe('块的位置记号', () => {
     expect(anchorOf(after, 'def helper(x, y=1):')).toBe(anchorOf(before, 'def helper(x):'))
   })
 
-  it('拆回各层：没名字的一层只有种类，编号去掉', () => {
-    expect(anchorSteps('class ReferralRelation > function display[1] > if @3fa1c2d0[2]')).toEqual([
-      { kind: 'class', name: 'ReferralRelation' },
-      { kind: 'function', name: 'display' },
-      { kind: 'if' },
-    ])
-    expect(anchorSteps('variable { a, b }')).toEqual([{ kind: 'variable', name: '{ a, b }' }])
-  })
-
   it('名字里的空白压成一个空格，空名字按没名字算', () => {
     const anchors = new BlockAnchors()
     expect(anchors.place('', 'variable', '{\n  a,\n  b\n}', '').anchor).toBe('variable { a, b }')

vscode/src/codeReader/qa/anchor.ts

@@ -40,20 +40,3 @@ export class BlockAnchors {
     return { anchor, inner: label === '' ? scope : anchor }
   }
 }
-
-/** 记号里的一层：种类和名字（没名字的块只有种类），给「找不到原来位置的问答」写它原来在哪。 */
-export interface AnchorStep {
-  kind: string
-  name?: string
-}
-
-/** 把记号拆回各层；拆不出种类的一层丢掉。 */
-export function anchorSteps(anchor: string): AnchorStep[] {
-  return anchor.split(SEPARATOR).flatMap((segment) => {
-    const match = /^(\S+) (.*?)(?:\[\d+\])?$/.exec(segment)
-    if (!match)
-      return []
-    const [, kind, rest] = match
-    return rest.startsWith(HASH_MARK) || rest === '' ? [{ kind }] : [{ kind, name: rest }]
-  })
-}

vscode/src/codeReader/qa/codeQa.ts

@@ -6,22 +6,22 @@ import type { QaEntry } from './qaMap'
 import { randomUUID } from 'node:crypto'
 import { EventEmitter } from 'vscode'
 import { FolderStore, locate } from '../folderStore'
-import { anchorSteps } from './anchor'
 import { QaAsks } from './asks'
 import { askClaude } from './claudeAsk'
-import { QA_FILE, withEntry, withoutEntry } from './qaMap'
+import { latestSession, QA_FILE, withEntry, withoutEntry } from './qaMap'
 
 /** 正在答的问题有了进展（update），或答完了（end；答成了带存下的那条的 id）。owner 是问的那份文件的 uri。 */
 export type AskEvent
   = | { owner: string, kind: 'update', ask: RunningAsk }
     | { owner: string, kind: 'end', ask: RunningAsk, end: AskEnd, entryId?: string }
 
+/** prompt 是带代码上下文的完整问题；followUp 是接着这块上一次的会话问时发的话（只有问题和是哪块） */
 export interface AskRequest {
   askId: string
   anchor: string
   question: string
   prompt: string
-  followUp?: { sessionId: string, prompt: string }
+  followUp: string
 }
 
 /**
@@ -49,21 +49,25 @@ export class CodeQa implements Disposable {
       available: at !== undefined,
       threads: threads.map(({ anchor, entries }) => ({
         anchor,
-        where: anchorSteps(anchor),
         entries: entries.map(({ id, question, answer, createdAt }) => ({ id, question, answer, createdAt })),
       })),
       running: this.asks.runningFor(uri.toString()),
     }
   }
 
-  /** 开始问；问不了时返回原因（给人看的话）。在工作区文件夹里跑 claude，它读得到整个项目。 */
+  /**
+   * 开始问；问不了时返回原因（给人看的话）。在工作区文件夹里跑 claude，它读得到整个项目。
+   * 这块问过的就接着最近一次的会话问（收起再展开、重启 VS Code 都一样），没问过就带上代码上下文开新会话。
+   */
   ask(uri: Uri, request: AskRequest): string | undefined {
     const at = locate(uri)
     if (!at)
       return '这个文件不在工作区文件夹里，问答没地方存。'
     const owner = uri.toString()
     const { askId, anchor, question, prompt, followUp } = request
-    return this.asks.start({ owner, askId, anchor, question, run: { prompt, followUp, cwd: at.folder.uri.fsPath } }, {
+    const sessionId = latestSession(this.store.get(at.folder, at.key), anchor)
+    const run = { prompt, ...(sessionId && { followUp: { sessionId, prompt: followUp } }), cwd: at.folder.uri.fsPath }
+    return this.asks.start({ owner, askId, anchor, question, run }, {
       update: ask => this.answered.fire({ owner, kind: 'update', ask }),
       end: async (ask, end) => {
         if (end.status !== 'done') {

vscode/src/codeReader/qa/qaMap.test.ts

@@ -4,7 +4,7 @@ import * as os from 'node:os'
 import * as path from 'node:path'
 import { afterEach, beforeEach, describe, expect, it } from 'vitest'
 import { dropEntries, moveEntries, readPathMap, writePathMap } from '../pathMap'
-import { QA_FILE, withEntry, withoutEntry } from './qaMap'
+import { latestSession, QA_FILE, withEntry, withoutEntry } from './qaMap'
 
 function entry(id: string, createdAt: string, question = `问 ${id}`): QaEntry {
   return { id, question, answer: `答 ${id}`, createdAt, sessionId: `s-${id}` }
@@ -67,6 +67,24 @@ describe('记一次、删一次', () => {
   })
 })
 
+describe('再问时接着哪个会话', () => {
+  it('接着这块最近一次问答的会话；别的块、没问过的块、没记会话 id 的都重新开', () => {
+    let map: QaMap = {}
+    map = withEntry(map, 'a.py', IF, entry('new', '2026-09-26T10:00:00.000Z'))
+    map = withEntry(map, 'a.py', IF, entry('old', '2026-09-25T10:00:00.000Z'))
+    map = withEntry(map, 'a.py', DISPLAY, { ...entry('bare', '2026-09-26T11:00:00.000Z'), sessionId: '' })
+    expect(latestSession(map['a.py'], IF)).toBe('s-new')
+    expect(latestSession(map['a.py'], DISPLAY)).toBeUndefined()
+    expect(latestSession(map['a.py'], 'function gone')).toBeUndefined()
+    expect(latestSession(undefined, IF)).toBeUndefined()
+  })
+
+  it('删掉最近那次，就接着剩下里最近的', () => {
+    const map = withEntry(withEntry({}, 'a.py', IF, entry('a', '2026-09-25T10:00:00.000Z')), 'a.py', IF, entry('b', '2026-09-26T10:00:00.000Z'))
+    expect(latestSession(withoutEntry(map, 'a.py', IF, 'b')['a.py'], IF)).toBe('s-a')
+  })
+})
+
 describe('读写 .spx/code-qa.json', () => {
   it('文件不存在、解析失败、不是对象都当没有', async () => {
     expect(await readPathMap(root, QA_FILE)).toEqual({})

vscode/src/codeReader/qa/qaMap.ts

@@ -88,3 +88,8 @@ export function withoutEntry(map: QaMap, key: string, anchor: string, entryId: s
   delete next[key]
   return threads.length > 0 ? { ...next, [key]: threads } : next
 }
+
+/** 再问 anchor 那块时接着的会话：这块最近一次问答的会话 id；没问过、或那次没记会话 id 时没有，重新开会话。 */
+export function latestSession(threads: readonly QaThread[] | undefined, anchor: string): string | undefined {
+  return threads?.find(thread => thread.anchor === anchor)?.entries.at(-1)?.sessionId || undefined
+}

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

@@ -4,12 +4,10 @@ import type { DocumentMessage, Excluded, Reveal } from './types'
 import type { ViewState } from './viewState'
 import { TriangleAlert } from 'lucide-react'
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
-import { OrphanThreads } from './AskThread'
 import { BlockLevel } from './BlockTree'
 import { coveredByEditing, startEditing } from './editing'
 import { applyFilter, keptWhileEditing } from './filter'
 import { FilterBar } from './FilterBar'
-import { orphanThreads } from './qa'
 import { useDefinitionLinks } from './useDefinitionLinks'
 import { HighlightContext, useOccurrences } from './useOccurrences'
 import { useQa } from './useQa'
@@ -86,8 +84,6 @@ export function App(): ReactElement | null {
   const onFocused = useCallback(() => setFocusId(null), [])
   const kindNames = useMemo(() => new Map(doc?.attributes.find(attribute => attribute.id === 'kind')?.values.map(value => [value.id, value.name])), [doc])
   const kindName = useCallback((kind: string) => kindNames.get(kind) ?? kind, [kindNames])
-  /** 找不到原来位置的问答；解析失败时一块都没有，不算 */
-  const orphans = useMemo(() => doc && doc.error === undefined && qa.state.available ? orphanThreads(qa.state.threads, doc.blocks) : [], [doc, qa.state])
   const tree = useMemo((): BlockTreeState | null => doc && {
     version: doc.version,
     editing: new Set(view.editing),
@@ -137,7 +133,6 @@ export function App(): ReactElement | null {
             </div>
           </div>
         )}
-        {orphans.length > 0 && <OrphanThreads threads={orphans} kindName={kindName} onDelete={qa.onDelete} />}
         {doc.blocks.length === 0
           ? doc.error === undefined && <div className="text-[var(--vscode-descriptionForeground)]">这个文件里没有代码。</div>
           : doc.blocks.some(block => !filter.hidden.has(block.id))

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

@@ -3,7 +3,7 @@ import type { Ask } from './qa'
 import type { QaEntryView } from './types'
 import { renderToStaticMarkup } from 'react-dom/server'
 import { describe, expect, it } from 'vitest'
-import { AskThread, OrphanThreads } from './AskThread'
+import { AskThread } from './AskThread'
 
 const NOW = new Date(2026, 8, 26, 15, 0).getTime()
 
@@ -68,19 +68,3 @@ describe('块下面的问答区', () => {
     expect(text(render({ open: true, asks: [ask({})] }))).toContain('正在想…')
   })
 })
-
-describe('找不到原来位置的问答', () => {
-  it('灰字一栏：写着原来在哪，问答照样能删', () => {
-    const html = renderToStaticMarkup(
-      <OrphanThreads
-        threads={[{ anchor: 'function display > if @1', where: [{ kind: 'function', name: 'display' }, { kind: 'if' }], entries: HISTORY }]}
-        kindName={kind => ({ function: '函数', if: '条件' })[kind] ?? kind}
-        now={NOW}
-        onDelete={() => {}}
-      />,
-    )
-    expect(text(html)).toContain('代码改动后找不到原来位置的问答 · 2 条')
-    expect(text(html)).toContain('原来在：函数 display › 条件')
-    expect(html.match(/aria-label="已理解，删除"/g)).toHaveLength(2)
-  })
-})

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

@@ -1,10 +1,10 @@
 import type { KeyboardEvent, ReactElement } from 'react'
 import type { Ask } from './qa'
-import type { QaEntryView, QaThreadView } from './types'
+import type { QaEntryView } from './types'
 import { ChevronDown, ChevronRight, CircleStop, LoaderCircle, SendHorizontal, Sparkles, Trash2, TriangleAlert } from 'lucide-react'
 import { useState } from 'react'
 import { renderMarkdown, renderMarkdownOnce } from './markdown'
-import { answerPreview, relativeTime, whereLabel } from './qa'
+import { answerPreview, relativeTime } from './qa'
 
 /** 问过的一次，灰字：问题、时间、「已理解，删除」，下面回答的前两行；点问题或预览展开整段回答（照样灰字，按 Markdown 排） */
 function HistoryItem({ entry, now, onDelete }: { entry: QaEntryView, now: number, onDelete: () => void }): ReactElement {
@@ -170,29 +170,3 @@ export function AskThread({ history, asks, open, now = Date.now(), onAsk, onStop
     </section>
   )
 }
-
-/** 预览顶上的灰字一栏：代码改动后找不到原来位置的问答，写着原来在哪，照样能看、能删 */
-export function OrphanThreads({ threads, kindName, now = Date.now(), onDelete }: {
-  threads: QaThreadView[]
-  kindName: (kind: string) => string
-  now?: number
-  onDelete: (anchor: string, entryId: string) => void
-}): ReactElement {
-  const [expanded, setExpanded] = useState(true)
-  const Chevron = expanded ? ChevronDown : ChevronRight
-  const count = threads.reduce((sum, thread) => sum + thread.entries.length, 0)
-  return (
-    <section className="cr-qa-orphans" aria-label="代码改动后找不到原来位置的问答">
-      <button type="button" className="cr-qa-summary" aria-expanded={expanded} onClick={() => setExpanded(value => !value)}>
-        <Chevron size={12} strokeWidth={1.8} aria-hidden />
-        {`代码改动后找不到原来位置的问答 · ${count} 条`}
-      </button>
-      {expanded && threads.map(thread => (
-        <div key={thread.anchor} className="cr-qa">
-          <div className="cr-qa-where">{`原来在：${whereLabel(thread.where, kindName)}`}</div>
-          {thread.entries.map(entry => <HistoryItem key={entry.id} entry={entry} now={now} onDelete={() => onDelete(thread.anchor, entry.id)} />)}
-        </div>
-      ))}
-    </section>
-  )
-}

vscode/webview-ui/src/codeReader/codeReader.css

@@ -679,23 +679,6 @@ body:is(.vscode-light, .vscode-high-contrast-light) [data-badge] { --kind: var(-
   outline-offset: 1px;
   border-radius: 2px;
 }
-/* 预览顶上：找不到原来位置的问答 */
-.cr-qa-orphans {
-  display: flex;
-  flex-direction: column;
-  gap: 6px;
-  margin-bottom: 12px;
-  padding: 6px 10px;
-  border: 1px dashed color-mix(in srgb, var(--vscode-descriptionForeground) 40%, transparent);
-  border-radius: 6px;
-}
-.cr-qa-orphans .cr-qa {
-  --qa-accent: var(--vscode-descriptionForeground);
-}
-.cr-qa-where {
-  color: var(--vscode-descriptionForeground);
-  font-size: 11.5px;
-}
 @media (prefers-reduced-motion: reduce) {
   .cr-qa-spin,
   .cr-qa-answer[data-streaming] > :last-child::after {

vscode/webview-ui/src/codeReader/qa.test.ts

@@ -1,13 +1,12 @@
 import type { QaAction, QaState } from './qa'
-import type { BlockView, QaMessage, QaThreadView } from './types'
+import type { QaMessage, QaThreadView } from './types'
 import { describe, expect, it } from 'vitest'
-import { answerPreview, asksOf, EMPTY_QA, historyOf, orphanThreads, qaReducer, relativeTime, resumeFor, whereLabel } from './qa'
+import { answerPreview, asksOf, EMPTY_QA, historyOf, qaReducer, relativeTime } from './qa'
 
 const IF = 'function get_user > if @3fa1c2d0'
-const RETURN = 'function get_user > return @9b1e2c3d'
 
 function thread(anchor: string, ...ids: string[]): QaThreadView {
-  return { anchor, where: [], entries: ids.map(id => ({ id, question: `问 ${id}`, answer: `答 ${id}`, createdAt: '2026-09-25T10:00:00.000Z' })) }
+  return { anchor, entries: ids.map(id => ({ id, question: `问 ${id}`, answer: `答 ${id}`, createdAt: '2026-09-25T10:00:00.000Z' })) }
 }
 
 function message(threads: QaThreadView[], running: QaMessage['running'] = []): QaMessage {
@@ -18,10 +17,6 @@ function qa(threads: QaThreadView[], running: QaMessage['running'] = []): QaActi
   return { type: 'qa', message: message(threads, running) }
 }
 
-function block(anchor: string, children: BlockView[] = []): BlockView {
-  return { id: anchor, anchor, kind: 'statement', startLine: 0, endLine: 0, code: '', codeTokens: [], attributes: {}, children, translation: [] }
-}
-
 function run(...actions: QaAction[]): QaState {
   return actions.reduce(qaReducer, EMPTY_QA)
 }
@@ -33,34 +28,23 @@ describe('问 AI 的状态', () => {
     expect(asksOf(state, IF)).toEqual([{ askId: 'a1', anchor: IF, question: '为什么？', text: '', status: 'running' }])
     state = qaReducer(state, { type: 'answer', askId: 'a1', text: '因为', activity: '读取 a.py' })
     expect(asksOf(state, IF)[0]).toMatchObject({ text: '因为', activity: '读取 a.py' })
-    state = qaReducer(state, { type: 'answerEnd', end: { type: 'answerEnd', askId: 'a1', status: 'done', text: '因为要鉴权。', entryId: 'new', sessionId: 's1' } })
+    state = qaReducer(state, { type: 'answerEnd', end: { type: 'answerEnd', askId: 'a1', status: 'done', text: '因为要鉴权。', entryId: 'new' } })
     state = qaReducer(state, qa([thread(IF, 'old', 'new')]))
-    expect(asksOf(state, IF)).toEqual([{ askId: 'a1', anchor: IF, question: '为什么？', text: '因为要鉴权。', status: 'done', entryId: 'new', sessionId: 's1' }])
+    expect(asksOf(state, IF)).toEqual([{ askId: 'a1', anchor: IF, question: '为什么？', text: '因为要鉴权。', status: 'done', entryId: 'new' }])
     expect(historyOf(state, IF).map(entry => entry.id)).toEqual(['old'])
   })
 
-  it('追问接着这一轮最近答成的会话；这一轮还没答成过就重新开', () => {
-    let state = run(qa([]), { type: 'ask', askId: 'a1', anchor: IF, question: '1' })
-    expect(resumeFor(state, IF)).toBeUndefined()
-    state = qaReducer(state, { type: 'answerEnd', end: { type: 'answerEnd', askId: 'a1', status: 'done', entryId: 'e1', sessionId: 's1' } })
-    state = qaReducer(state, { type: 'ask', askId: 'a2', anchor: IF, question: '2' })
-    state = qaReducer(state, { type: 'answerEnd', end: { type: 'answerEnd', askId: 'a2', status: 'failed', error: '网络断了' } })
-    expect(resumeFor(state, IF)).toBe('s1')
-    expect(resumeFor(state, RETURN)).toBeUndefined()
-  })
-
   it('收起就结束这一轮：答完的回到历史，还在答的留着；再展开', () => {
     let state = run(
       qa([thread(IF, 'e1')]),
       { type: 'ask', askId: 'a1', anchor: IF, question: '1' },
-      { type: 'answerEnd', end: { type: 'answerEnd', askId: 'a1', status: 'done', entryId: 'e1', sessionId: 's1' } },
+      { type: 'answerEnd', end: { type: 'answerEnd', askId: 'a1', status: 'done', entryId: 'e1' } },
       { type: 'ask', askId: 'a2', anchor: IF, question: '2' },
       { type: 'close', anchor: IF },
     )
     expect(state.open).toEqual([])
     expect(asksOf(state, IF).map(ask => ask.askId)).toEqual(['a2'])
     expect(historyOf(state, IF).map(entry => entry.id)).toEqual(['e1'])
-    expect(resumeFor(state, IF)).toBeUndefined()
     state = qaReducer(state, { type: 'open', anchor: IF })
     expect(state.open).toEqual([IF])
   })
@@ -83,19 +67,6 @@ describe('问 AI 的状态', () => {
   })
 })
 
-describe('找不到原来位置的问答', () => {
-  it('记号对不上任何一层的块才算', () => {
-    const threads = [thread(IF, 'a'), thread(RETURN, 'b'), thread('function gone', 'c')]
-    expect(orphanThreads(threads, [block('function get_user', [block(IF)])]).map(item => item.anchor)).toEqual([RETURN, 'function gone'])
-  })
-
-  it('原来在哪：种类取翻译插件起的名字，没名字的块只写种类', () => {
-    const names: Record<string, string> = { class: '类', function: '函数', if: '条件' }
-    expect(whereLabel([{ kind: 'class', name: 'ReferralRelation' }, { kind: 'function', name: 'display' }, { kind: 'if' }], kind => names[kind] ?? kind))
-      .toBe('类 ReferralRelation › 函数 display › 条件')
-  })
-})
-
 describe('问的时间', () => {
   const now = new Date(2026, 8, 26, 15, 0).getTime()
   const at = (year: number, month: number, day: number, hour: number, minute: number, second = 0): string =>

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

@@ -1,9 +1,9 @@
 /**
  * 「问 AI」在页面上的状态和规则（不碰 DOM）：问答按块的记号（BlockView.anchor）挂到块下面；
- * 这次打开以来问的是「当前这一轮」，照常颜色显示，别的都是灰字的历史；记号对不上任何块的问答是「找不到原来位置的」。
+ * 这次打开以来问的是「当前这一轮」，照常颜色显示，别的都是灰字的历史；记号对不上任何块的问答不显示。
  */
 
-import type { AnchorStep, AnswerEnd, BlockView, QaEntryView, QaMessage, QaThreadView } from './types'
+import type { AnswerEnd, QaEntryView, QaMessage, QaThreadView } from './types'
 
 /** 这次打开以来问的一个问题 */
 export interface Ask {
@@ -19,8 +19,6 @@ export interface Ask {
   error?: string
   /** done 时存下的那条：历史里不再重复显示它 */
   entryId?: string
-  /** done 时的会话 id：接着追问用 */
-  sessionId?: string
 }
 
 export interface QaState {
@@ -68,11 +66,11 @@ export function qaReducer(state: QaState, action: QaAction): QaState {
           : ask),
       }
     case 'answerEnd': {
-      const { askId, status, text, error, entryId, sessionId } = action.end
+      const { askId, status, text, error, entryId } = action.end
       return {
         ...state,
         asks: state.asks.map(ask => ask.askId === askId
-          ? { askId, anchor: ask.anchor, question: ask.question, text: text ?? ask.text, status, error, entryId, sessionId }
+          ? { askId, anchor: ask.anchor, question: ask.question, text: text ?? ask.text, status, error, entryId }
           : ask),
       }
     }
@@ -105,30 +103,6 @@ export function historyOf(state: QaState, anchor: string): QaEntryView[] {
   return state.threads.find(thread => thread.anchor === anchor)?.entries.filter(entry => !current.has(entry.id)) ?? []
 }
 
-/** 追问接着哪个会话：当前这一轮最近答成的那次；这一轮还没答成过就重新开 */
-export function resumeFor(state: QaState, anchor: string): string | undefined {
-  return asksOf(state, anchor).filter(ask => ask.status === 'done' && ask.sessionId).at(-1)?.sessionId
-}
-
-function anchorsIn(blocks: readonly BlockView[], into: Set<string>): Set<string> {
-  for (const block of blocks) {
-    into.add(block.anchor)
-    anchorsIn(block.children, into)
-  }
-  return into
-}
-
-/** 记号对不上任何块的问答（代码改动后找不到原来的位置了），按文件里的先后 */
-export function orphanThreads(threads: readonly QaThreadView[], blocks: readonly BlockView[]): QaThreadView[] {
-  const anchors = anchorsIn(blocks, new Set())
-  return threads.filter(thread => !anchors.has(thread.anchor))
-}
-
-/** 问答原来挂在哪：各层写成「种类 名字」，用 › 连起来，例如「类 ReferralRelation › 函数 display › 条件」 */
-export function whereLabel(where: readonly AnchorStep[], kindName: (kind: string) => string): string {
-  return where.map(step => step.name === undefined ? kindName(step.kind) : `${kindName(step.kind)} ${step.name}`).join(' › ')
-}
-
 const MINUTE = 60_000
 const DAY = 24 * 60 * MINUTE
 

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

@@ -164,16 +164,9 @@ export interface QaEntryView {
   createdAt: string
 }
 
-/** 块的位置记号里的一层：种类（同 BlockViewBase.kind）和名字，没名字的块只有种类 */
-export interface AnchorStep {
-  kind: string
-  name?: string
-}
-
-/** 挂在一块上的问答；where 是它原来在哪（各层的种类和名字），块找不到了时显示 */
+/** 挂在一块上的问答；记号对不上这份文件里任何一块的不显示 */
 export interface QaThreadView {
   anchor: string
-  where: AnchorStep[]
   entries: QaEntryView[]
 }
 
@@ -198,7 +191,7 @@ export interface QaMessage {
 }
 
 /**
- * 一个问题怎么结束的：done 带最终的回答（逐字发来的最后一份可能没赶上）、存下的那条的 id 和会话 id（追问接着这个会话），
+ * 一个问题怎么结束的：done 带最终的回答（逐字发来的最后一份可能没赶上）和存下的那条的 id，
  * failed 带给人看的原因，stopped 是被叫停、没存
  */
 export interface AnswerEnd {
@@ -208,7 +201,6 @@ export interface AnswerEnd {
   text?: string
   error?: string
   entryId?: string
-  sessionId?: string
 }
 
 /**
@@ -238,7 +230,7 @@ export type ExtensionToWebview
  * goToDefinition：⌘ / Ctrl + 点击，跳到 offset 处名字的定义
  * findOccurrences：单击带下标的名字，问它在这份文档里出现在哪几处；id、version 同 probeDefinition
  * setFilter：改块筛选（整份替换）；不在本地先改，等扩展端发回 filter 再按它显示
- * ask：问 anchor 那块代码；askId 由这边起，回答的消息带回来；resume 是追问时上一次的会话 id
+ * ask：问 anchor 那块代码；askId 由这边起，回答的消息带回来；扩展端接着这块最近一次问答的会话问
  * stopAsk：叫停 askId 那个问题，这次不存
  * deleteQa：删掉 anchor 那块下面的一次问答（已经理解了）
  */
@@ -251,6 +243,6 @@ export type WebviewToExtension
     | { type: 'probeDefinition', id: number, version: number, offset: number }
     | { type: 'goToDefinition', version: number, offset: number }
     | { type: 'findOccurrences', id: number, version: number, offset: number }
-    | { type: 'ask', askId: string, anchor: string, question: string, resume?: string }
+    | { type: 'ask', askId: string, anchor: string, question: string }
     | { type: 'stopAsk', askId: string }
     | { type: 'deleteQa', anchor: string, entryId: string }

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

@@ -1,7 +1,7 @@
 import type { QaTree } from './BlockTree'
 import type { QaState } from './qa'
 import { useEffect, useMemo, useReducer, useRef } from 'react'
-import { EMPTY_QA, newAskId, qaReducer, resumeFor } from './qa'
+import { EMPTY_QA, newAskId, qaReducer } from './qa'
 import { onMessage, postMessage } from './vscode'
 
 /** 逐字长出来的回答最多隔多久画一次：一个字一画整棵块树跟着重画，大文件会卡 */
@@ -10,7 +10,7 @@ const ANSWER_FRAME_MS = 80
 /** 问 AI：收扩展端的问答、正在答的进展，给块树用的状态和动作（问、停、删、展开 / 收起）。 */
 export function useQa(): QaTree {
   const [state, dispatch] = useReducer(qaReducer, EMPTY_QA)
-  /** 动作里读眼下的状态（追问接着哪个会话） */
+  /** 动作里读眼下的状态（这块展开着没有） */
   const current = useRef<QaState>(state)
   current.current = state
 
@@ -51,9 +51,8 @@ export function useQa(): QaTree {
     onClose: anchor => dispatch({ type: 'close', anchor }),
     onAsk: (anchor, question) => {
       const askId = newAskId()
-      const resume = resumeFor(current.current, anchor)
       dispatch({ type: 'ask', askId, anchor, question })
-      postMessage({ type: 'ask', askId, anchor, question, ...(resume && { resume }) })
+      postMessage({ type: 'ask', askId, anchor, question })
     },
     onStop: askId => postMessage({ type: 'stopAsk', askId }),
     onDelete: (anchor, entryId) => postMessage({ type: 'deleteQa', anchor, entryId }),