feat(conversation): replicate in-place user message editing (TODO 03)

docs/复刻待办清单-2026-10-17.md

@@ -70,11 +70,35 @@
 
 ### 03. 编辑已发送消息
 
-- [ ] 拆解原版编辑入口、编辑容器、文本排版、按钮、焦点与键盘交互。
-- [ ] 对齐进入编辑、修改、取消、提交及失败状态。
-- [ ] 验收：编辑正确消息；取消恢复原内容；提交后的消息分支与产物处理符合已确认行为。
+- [x] 拆解原版编辑入口、编辑容器、文本排版、按钮、焦点与键盘交互。
+- [x] 对齐进入编辑、修改、取消、提交及失败状态。
+- [x] 验收：编辑正确消息；取消恢复原内容；提交后的消息分支与产物处理符合已确认行为。
 
-状态：待 REA 对照。
+状态：主体已实现，并通过真实窗口回归与真实 IPC 回归；工具条淡入/提示出现时序未逐帧采集。
+
+原版证据：
+- 渲染器实现（REA 回收 `.tmp/wb-src-DbE1_mgM.js`）：`UserMessageEditProvider`、`UserMessageEditor`/`UserMessageEditorContent`（校验规则 `empty`/`too-long`，上限 `1e4`；`message.edit.submit`；错误码映射 `userMessage.edit.error.retryLater`；`RenderNoHandlerError` → `sendFailed`；外部 mousedown 关闭规则与豁免选择器）、`ToolbarRenderer`（`cr-toolbar` = 时间 + 复制 + 恢复此版本 + 编辑；编辑中或已丢弃时不渲染）、`IconButton`、`RevertToBeforeIcon`、`LoadingSpinnerIcon`、`formatMessageTime`。
+- 样式：REA 回收样式表 `src-CyXHA0IC.css`（SHA-256 `a5e26b537bb50323aefbf25abddad52e288dd3868598be8d255d70886fe77cfe`）中 21 条 `.cr-user-message-editor*` / `.cr-self-bubble--editing` 规则与 13 条 `.cr-toolbar*` 规则。
+- 文案：REA Evidence `ev_717fa5e846e64d67ac19c8925d121bff632c0d3aefb3603b10858559cabb2dcb` 中 `userMessage.edit.*`、`userMessage.action.*`、`markdown.copy`/`markdown.copied` 的 zh-CN 与 en-US。
+- 运行时几何与样式：`ev_245ea1740cde21869500348e47cf9663a1ea72943ccfe79c163a6838a153bfd3`（工具条 97.23×28、时间 33.23×20、复制/编辑按钮 24×24、图标 14×14；无产物会话不显示恢复按钮；编辑态气泡 535×110、编辑器 511×94、输入容器 50、页脚 44、提示 369×18、取消 62×32、发送 60×30）、`ev_5dd78e06e75b3a29b656d328c2efc2a820ea197e8204a39840207188a6496a0f`（编辑器保持打开）、`ev_ee345b160e5f520ed866c1059b7c72e77b34e49bf1ce407cd266ea886aa86405`（编辑态布局快照与计算样式：容器透明/无边框/无阴影/`min-height:50px`、宿主 `min-height:64px`、可编辑区 15px/1.75、提示 13/18 `rgba(0,0,0,.5)`、取消边框 `1px rgb(235,235,235)`、发送 `rgb(26,26,26)`/白字、InfoIcon path）、`ev_308764954de03fa28e4a980d609d33eabf794c44ce6733bfe1b83cec36ef562a`（取消关闭并恢复原气泡）。
+- 观察范围：桌面浅色主题、单条用户消息；覆盖无产物写入会话（工具条无恢复入口）与含 `write_file` 记录会话（出现恢复入口）。未覆盖：工具条淡入与 tooltip 出现的逐帧时序、未发送/被丢弃消息的“恢复到此版本”状态。
+
+实现：
+- `workbuddy/conversation/UserMessageEditor.tsx`：就地编辑器，原版 DOM（`cr-user-message-editor` > `cr-input-container-wrapper`/`cr-input-container`/`cr-input-editor-host` + `[data-slate-editor]` 可编辑区、`__error`、`__footer`/`__hint`/`__hint-icon`/`__actions`/`__cancel`/`__send`）；空内容与 10000 字符校验、Enter 提交（Shift+Enter 换行）、提交中禁用按钮并显示 spinner 与 `aria-busy`、失败文案按 `error.retryLater`/`sendFailed` 映射、外部 mousedown 仅在没有改动且未提交时取消。
+- `workbuddy/conversation/MessageEditorIcons.tsx`：`RevertToBeforeIcon`、`EditorInfoIcon`、`EditorSpinnerIcon` 按回收源码与运行时 `svg_nodes` 原样复刻。
+- `workbuddy/conversation/message-edit-source.css`：补齐 18 条缺失回收规则（含编辑容器 `min-height:50px` 与 `:focus-within` 去阴影以覆盖宿主适配规则）；`.cr-self-bubble--editing` 与 `:has(.cr-user-message-editor)` 复用 `source-styles.css` 已有声明。
+- `workbuddy/message-actions/UserMessageToolbar.tsx`：`div.cr-toolbar[data-message-id][role=toolbar]`，时间按三档格式显示；复制按钮 2000ms 内切换“已复制”且 tooltip 不因点击隐藏；恢复此版本仅在存在可回退产物时渲染并透传禁用态；编辑按钮受会话忙状态约束；图标按钮为 `button.cr-icon-button[data-action][aria-label]` + `svg.cr-icon-button__icon`。
+- `workbuddy/message-actions/message-copy.ts`：抽出用户消息复制回退链，旧 `MessageActionToolbar` 复用同一实现。
+- `components/MessageBubble.tsx` / `components/ChatPane.tsx`：新增 `editingMessageId` 与 `startEdit`/`cancelEdit`/`submitEdit`；编辑态用编辑器替换气泡内容并卸载工具条；提交走 `send(..., { fromMessageId, action:'edit' })`；移除底部输入框“编辑消息”横幅与用户消息的“重新发送”入口。
+- `main/workspace-revert.ts` 新增 `rollbackEditedArtifacts`；`main/ipc.ts` 的 `chat:send` 在 `action==='edit'` 时先回退产物（无写入记录则跳过；记录不完整则拒绝提交），原生分支失败时撤销文件回退。
+
+验证：`node scripts/verify-user-message-edit.cjs` 在真实隔离 Electron（真实 preload/IPC/渲染进程，`chat:send` 桩记录载荷）中 50 项断言全部通过，覆盖工具条几何/配色/时间格式/按钮集合与图标（copy/revert/edit、14×14、viewBox 16/14）、悬停显隐、进入编辑、编辑器几何与排版（容器 50/宿主 64/可编辑 15px·1.75/提示与按钮尺寸）、取消恢复原内容、有改动时外部 mousedown 不关闭、空内容校验阻断提交、提交中禁用 + spinner + `aria-busy`、`action:'edit'` + `fromMessageId` 真实 IPC 载荷、Enter 提交、无渲染器报错；报告与截图：`.tmp/edit-O1kT3A/`（早期 `.tmp/edit-2MoqPF/`、`.tmp/edit-624Sw3/`）。`npm run test:conversation-ipc` 新增 `testEditArtifactRollback`，覆盖真实主进程语义：产物回退到消息前版本、历史前缀保留并追加替换消息、原生分支失败时撤销文件回退且会话不变、无产物改动可直接编辑、含不可回滚工具时拒绝编辑且文件与会话不变。`npm run typecheck`、`npm run test:conversation`、`npm run test:recovered`、`npm run test:chat`、`npm run build` 均通过。
+
+遗留：
+1. 工具条淡入（`opacity .2s`，hover 后 `transition-delay:0s`）与 tooltip 出现时序未逐帧采集，当前按回收 CSS 声明实现，未做像素级时序比对。
+2. 原版提交失败的错误码集合（`resend-settle-timeout`、`cancel-barrier`、`send-in-progress` 等）仅有映射表证据；YCode 目前只区分“上一轮未结束”和“其它失败”两类文案。
+3. 原版 `userMessage.edit.resume`（恢复到此版本）依赖未发送/被丢弃消息状态，YCode 暂无对应状态，未渲染该按钮（DOM 结构与 CSS 规则已保留）。
+4. 原版 `formatMessageTime` 含“昨天 HH:mm”分支，与此前用户确认的三档格式不同；当前沿用用户确认的三档规则，差异待确认。
 
 ### 04. 用户消息悬停时间
 

scripts/composer-regression.tsx

@@ -4,6 +4,8 @@ import { ComposerControls } from '../src/renderer/src/workbuddy/composer/Compose
 import { encodePcmWav, downsamplePcm, VOICE_MAX_DURATION_MS } from '../src/renderer/src/workbuddy/composer/VoiceInputControl'
 import { buildComposerSendPayload, MAX_ATTACHMENT_BYTES, oversizedAttachmentNames, parseResourcePath, readReferenceUris } from '../src/renderer/src/workbuddy/composer/ComposerControls'
 import { MessageActionToolbar } from '../src/renderer/src/workbuddy/message-actions/MessageActionToolbar'
+import { UserMessageToolbar } from '../src/renderer/src/workbuddy/message-actions/UserMessageToolbar'
+import { UserMessageEditor } from '../src/renderer/src/workbuddy/conversation/UserMessageEditor'
 import { buildCopyMessagePayload, buildUserMessageClipboard, getSortedRequestMessages, projectSafeMessage, safeStringify, USER_CONTENT_BLOCKS_MIME } from '../src/renderer/src/workbuddy/message-actions/project-safe-message'
 import type { ChatMessage } from '../src/shared/types'
 
@@ -132,11 +134,34 @@ const assistantMarkup = renderToStaticMarkup(<MessageActionToolbar message={assi
 assert.match(assistantMarkup, /复制/)
 assert.match(assistantMarkup, /重新生成/)
 assert.doesNotMatch(assistantMarkup, /编辑/)
-const userMarkup = renderToStaticMarkup(<MessageActionToolbar message={{ id: 'user', role: 'user', content: 'hi', createdAt: 1 }} onEdit={() => undefined} onRevert={() => undefined} onResend={() => undefined} />)
-assert.match(userMarkup, /编辑/)
-assert.match(userMarkup, /重新发送/)
-assert.doesNotMatch(userMarkup, /重新生成/)
-assert.doesNotMatch(userMarkup, /赞同|不赞同/, 'feedback actions are assistant-only')
+// 用户消息工具条已替换为原版 .cr-toolbar（时间 + 复制 + 恢复此版本 + 编辑，不含重新发送）。
+const userMarkup = renderToStaticMarkup(<UserMessageToolbar message={{ id: 'user', role: 'user', content: 'hi', createdAt: Date.now() }} canEdit onEdit={() => undefined} onRevert={() => undefined} />)
+assert.match(userMarkup, /class="cr-toolbar"/)
+assert.match(userMarkup, /cr-toolbar__time/)
+assert.match(userMarkup, /data-action="copy"/)
+assert.match(userMarkup, /data-action="revert"/)
+assert.match(userMarkup, /data-action="edit"/)
+assert.match(userMarkup, /cr-icon-button__icon/)
+assert.doesNotMatch(userMarkup, /重新发送|重新生成|赞同|不赞同/)
+assert.doesNotMatch(userMarkup, /wb-message-action__label/, '工具栏只保留图标，不再渲染文字标签')
+
+const editorMarkup = renderToStaticMarkup(<UserMessageEditor message={{ id: 'user', role: 'user', content: 'hi', createdAt: 1 }} onSubmit={async () => undefined} onCancel={() => undefined} />)
+assert.match(editorMarkup, /class="cr-user-message-editor"/)
+assert.match(editorMarkup, /cr-input-container-wrapper/)
+assert.match(editorMarkup, /cr-input-editor-host/)
+assert.match(editorMarkup, /data-slate-editor/)
+assert.match(editorMarkup, /cr-user-message-editor__hint-icon/)
+assert.match(editorMarkup, /编辑后将从此处重新开始对话，产物也将回退至此信息前版本/)
+assert.match(editorMarkup, /cr-user-message-editor__cancel/)
+assert.match(editorMarkup, /cr-user-message-editor__send/)
+assert.match(editorMarkup, />取消</)
+assert.match(editorMarkup, />发送</)
+assert.doesNotMatch(editorMarkup, /role="alert"/, '有内容时不显示错误')
+
+const emptyEditorMarkup = renderToStaticMarkup(<UserMessageEditor message={{ id: 'user', role: 'user', content: '', createdAt: 1 }} onSubmit={async () => undefined} onCancel={() => undefined} />)
+assert.match(emptyEditorMarkup, /消息内容不能为空/)
+assert.match(emptyEditorMarkup, /role="alert"/)
+assert.match(emptyEditorMarkup, /cr-user-message-editor__send" disabled/)
 
 const composerMarkup = renderToStaticMarkup(
   <ComposerControls value="draft" onChange={() => undefined} onSend={() => undefined} onModeChange={() => undefined} modelSlot={<span>Model slot</span>} workspaceFooter={<span>Workspace slot</span>} sending />

scripts/conversation-ipc-regression.ts

@@ -355,6 +355,60 @@ async function testActionBranchFailure(bundle: TestBundle, state: TestState): Pr
     'failed action branch should restore the prior marker')
 }
 
+async function testEditArtifactRollback(bundle: TestBundle, state: TestState, workspace: string): Promise<void> {
+  const invoke = invokeFor(state)
+  // 有产物：编辑提交先回退文件，再从该消息处重新开始对话（原版 userMessage.edit.hint）。
+  const rolledPath = join(workspace, 'edit-rollback.txt')
+  const rolledSession = await seedWriteHistory(bundle, state, 'edit-rollback', rolledPath, 'edit-rollback-native-target', 'after')
+  await invoke('chat:send', { sessionId: rolledSession, text: 'edited prompt', action: 'edit', fromMessageId: 'edit-rollback-user' })
+  const rolledMessages = await waitForAssistant(invoke, rolledSession)
+  assert.equal(await readFile(rolledPath, 'utf8'), 'before',
+    'edit submit must roll the artifact back to its version before the message')
+  assert.equal(rolledMessages.length, 2, 'edit keeps the prefix before the edited message and appends the replacement')
+  assert.equal(rolledMessages[0].content, 'edited prompt')
+  assert.ok(rolledMessages[0].nativeEntryId?.startsWith('native-prompt-'), 'replacement turn should receive the new native entryId')
+
+  // 分支失败：撤销文件回退，保持会话不变。
+  const failedPath = join(workspace, 'edit-rollback-branch-failure.txt')
+  const failedSession = await seedWriteHistory(bundle, state, 'edit-rollback-failed', failedPath, 'edit-rollback-failed-native', 'after')
+  const failedBefore = await bundle.sessions.getMessages(failedSession)
+  state.failBranchIds.add('edit-rollback-failed-native')
+  await assert.rejects(invoke('chat:send', {
+    sessionId: failedSession, text: 'edited failed', action: 'edit', fromMessageId: 'edit-rollback-failed-user'
+  }), /branch failure/)
+  state.failBranchIds.delete('edit-rollback-failed-native')
+  assert.equal(await readFile(failedPath, 'utf8'), 'after', 'failed native branch must undo the artifact rollback')
+  assert.deepEqual(await bundle.sessions.getMessages(failedSession), failedBefore,
+    'failed edit must leave the persisted conversation untouched')
+
+  // 无产物改动：直接重开对话，不因缺少文件记录而报错。
+  const plainSession = await invoke('session:create', 'edit-plain') as { id: string }
+  await bundle.sessions.appendMessage(plainSession.id, message('edit-plain-user', 'user', 'plain prompt', { nativeEntryId: 'edit-plain-native' }))
+  await bundle.sessions.appendMessage(plainSession.id, message('edit-plain-assistant', 'assistant', 'plain reply'))
+  seedNativeHistory(state, plainSession.id, [['edit-plain-native', 'plain prompt']])
+  await invoke('chat:send', { sessionId: plainSession.id, text: 'edited plain', action: 'edit', fromMessageId: 'edit-plain-user' })
+  const plainMessages = await waitForAssistant(invoke, plainSession.id)
+  assert.equal(plainMessages.length, 2)
+  assert.equal(plainMessages[0].content, 'edited plain')
+
+  // 记录不完整（不可回滚工具）：拒绝编辑，会话与文件都不变。
+  const blockedPath = join(workspace, 'edit-blocked.txt')
+  await writeFile(blockedPath, 'after', 'utf8')
+  const blockedSession = await invoke('session:create', 'edit-blocked') as { id: string }
+  await bundle.sessions.appendMessage(blockedSession.id, message('edit-blocked-user', 'user', 'blocked prompt', { nativeEntryId: 'edit-blocked-native' }))
+  await bundle.sessions.appendMessage(blockedSession.id, message('edit-blocked-assistant', 'assistant', 'ran shell', {
+    tools: [{ id: 'shell-tool', name: 'run_command', args: {}, argsRaw: '{}', status: 'ok' }]
+  }))
+  seedNativeHistory(state, blockedSession.id, [['edit-blocked-native', 'blocked prompt']])
+  const blockedBefore = await bundle.sessions.getMessages(blockedSession.id)
+  await assert.rejects(invoke('chat:send', {
+    sessionId: blockedSession.id, text: 'edited blocked', action: 'edit', fromMessageId: 'edit-blocked-user'
+  }), /无法完整回滚/)
+  assert.equal(await readFile(blockedPath, 'utf8'), 'after', 'rejected edit must not touch artifacts')
+  assert.deepEqual(await bundle.sessions.getMessages(blockedSession.id), blockedBefore,
+    'rejected edit must leave history untouched')
+}
+
 async function testInterruptedResend(bundle: TestBundle, state: TestState): Promise<void> {
   const invoke = invokeFor(state)
   for (const nativeAccepted of [false, true]) {
@@ -684,6 +738,7 @@ async function main(): Promise<void> {
     await testConcurrency(bundle, state, invoke)
     for (const action of ['edit', 'resend', 'regenerate'] as const) await testActionBranch(bundle, state, action)
     await testActionBranchFailure(bundle, state)
+    await testEditArtifactRollback(bundle, state, workspace)
     await testInterruptedResend(bundle, state)
     await testAttachments(bundle, state, tempRoot)
     await testSpeech(bundle, state)

scripts/rea/probe-open-target-conversation-20261017.json

@@ -0,0 +1,15 @@
+{
+  "include_fonts": false,
+  "include_message_content": true,
+  "track_selectors": [
+    ".cr-self-bubble",
+    ".cr-frame--right",
+    ".cr-toolbar"
+  ],
+  "actions": [
+    { "kind": "click", "step_id": "open-first-space-task", "selector": ".conversation-item", "index": 0, "frames": 0 },
+    { "kind": "wait", "step_id": "conversation-loaded", "duration_ms": 1500, "frames": 1 },
+    { "kind": "hover", "step_id": "hover-user-message", "selector": ".cr-self-bubble", "index": 0, "frames": 1 },
+    { "kind": "wait", "step_id": "toolbar-visible", "duration_ms": 400, "frames": 1 }
+  ]
+}

scripts/rea/probe-user-message-edit-20261017.json

@@ -0,0 +1,26 @@
+{
+  "include_fonts": false,
+  "include_message_content": true,
+  "track_selectors": [
+    ".cr-frame--right",
+    ".cr-toolbar",
+    ".cr-toolbar__time",
+    ".cr-toolbar .cr-icon-button[data-action='copy']",
+    ".cr-toolbar .cr-icon-button[data-action='revert']",
+    ".cr-toolbar .cr-icon-button[data-action='edit']",
+    ".cr-self-bubble--editing",
+    ".cr-user-message-editor",
+    ".cr-user-message-editor .cr-input-editor-host",
+    ".cr-user-message-editor__hint",
+    ".cr-user-message-editor__cancel",
+    ".cr-user-message-editor__send"
+  ],
+  "actions": [
+    { "kind": "hover", "step_id": "hover-user-message", "selector": ".cr-self-bubble", "index": 0, "frames": 1, "interval_ms": 50 },
+    { "kind": "wait", "step_id": "toolbar-visible", "duration_ms": 350, "frames": 1 },
+    { "kind": "click", "step_id": "open-editor", "selector": ".cr-toolbar .cr-icon-button[data-action='edit']", "index": 0, "frames": 0 },
+    { "kind": "wait", "step_id": "editor-visible", "duration_ms": 700, "frames": 1, "interval_ms": 50 },
+    { "kind": "click", "step_id": "cancel-editor", "selector": ".cr-user-message-editor__cancel", "index": 0, "frames": 0 },
+    { "kind": "wait", "step_id": "editor-closed", "duration_ms": 500, "frames": 1 }
+  ]
+}

scripts/rea/probe-user-message-edit-cancel-20261017.json

@@ -0,0 +1,13 @@
+{
+  "include_fonts": false,
+  "include_message_content": false,
+  "track_selectors": [
+    ".cr-self-bubble",
+    ".cr-toolbar",
+    ".cr-user-message-editor"
+  ],
+  "actions": [
+    { "kind": "click", "step_id": "cancel-editor", "selector": ".cr-user-message-editor__cancel", "index": 0, "frames": 0 },
+    { "kind": "wait", "step_id": "editor-closed", "duration_ms": 500, "frames": 1 }
+  ]
+}

scripts/rea/probe-user-message-edit-open-20261017.json

@@ -0,0 +1,24 @@
+{
+  "include_fonts": false,
+  "include_message_content": true,
+  "track_selectors": [
+    ".cr-self-bubble--editing",
+    ".cr-user-message-editor",
+    ".cr-user-message-editor .cr-input-container",
+    ".cr-user-message-editor .cr-input-editor-host",
+    ".cr-user-message-editor__error",
+    ".cr-user-message-editor__hint",
+    ".cr-user-message-editor__hint-icon",
+    ".cr-user-message-editor__actions",
+    ".cr-user-message-editor__cancel",
+    ".cr-user-message-editor__send",
+    ".cr-user-message-editor__resume",
+    ".cr-user-message-editor__send svg"
+  ],
+  "actions": [
+    { "kind": "hover", "step_id": "hover-user-message", "selector": ".cr-self-bubble", "index": 0, "frames": 0 },
+    { "kind": "wait", "step_id": "toolbar-visible", "duration_ms": 300, "frames": 0 },
+    { "kind": "click", "step_id": "open-editor", "selector": ".cr-toolbar .cr-icon-button[data-action='edit']", "index": 0, "frames": 0 },
+    { "kind": "wait", "step_id": "editor-open", "duration_ms": 800, "frames": 1 }
+  ]
+}

scripts/verify-user-message-edit.cjs

@@ -0,0 +1,259 @@
+// 真实隔离 YCode App + 真实 preload/IPC/渲染进程，验证用户消息就地编辑（TODO 03）。
+// 原版期望值来自：ev_245ea1740cde21869500348e47cf9663a1ea72943ccfe79c163a6838a153bfd3（打开/取消编辑）、
+// ev_5dd78e06e75b3a29b656d328c2efc2a820ea197e8204a39840207188a6496a0f（保持编辑器打开）、
+// ev_ee345b160e5f520ed866c1059b7c72e77b34e49bf1ce407cd266ea886aa86405（编辑态布局/计算样式快照）、
+// src-CyXHA0IC.css（SHA-256 a5e26b537bb50323aefbf25abddad52e288dd3868598be8d255d70886fe77cfe）。
+const fs = require('node:fs/promises')
+const path = require('node:path')
+const assert = require('node:assert/strict')
+
+if (!process.versions.electron) {
+  ;(async () => {
+    const directory = await fs.mkdtemp(path.resolve('.tmp/edit-'))
+    const data = path.join(directory, 'data')
+    const home = path.join(directory, 'home')
+    const cwd = path.join(directory, 'fixture-workspace')
+    await fs.mkdir(data); await fs.mkdir(home); await fs.mkdir(cwd)
+    const crypto = require('node:crypto')
+    const now = Date.now()
+    const firstUserId = crypto.randomUUID()
+    const secondUserId = crypto.randomUUID()
+    // 产物回退夹具：目标消息之后的助手回合写入了一个文件，编辑提交后该文件应回退到旧内容。
+    const editedFilePath = path.join(cwd, 'edited-artifact.txt')
+    const editedFileBefore = '旧内容：尚未编辑'
+    const editedFileAfter = '新内容：编辑后写入'
+    await fs.writeFile(editedFilePath, editedFileAfter, 'utf8')
+    const sessions = [{ id: crypto.randomUUID(), title: 'Edit Live', cwd, createdAt: now, updatedAt: now + 1, messages: [
+      { id: firstUserId, role: 'user', content: '第一条历史消息', createdAt: now - 4000, status: 'done' },
+      { id: crypto.randomUUID(), role: 'assistant', content: '收到第一条。', createdAt: now - 3000, status: 'done' },
+      { id: secondUserId, role: 'user', content: 'workbuddy是否有目标模式', createdAt: now - 2000, status: 'done' },
+      { id: crypto.randomUUID(), role: 'assistant', content: '本地文档里没有直接命中。', createdAt: now - 1000, status: 'done', tools: [
+        { id: 'tool-write-1', name: 'write_file', status: 'ok', args: { path: editedFilePath }, result: { path: editedFilePath, oldContent: editedFileBefore, newContent: editedFileAfter } }
+      ] }
+    ] }]
+    await fs.writeFile(path.join(data, 'sessions.json'), JSON.stringify({ sessions }))
+    await fs.writeFile(path.join(directory, 'expected.json'), JSON.stringify({ firstUserId, secondUserId, editedFilePath, editedFileBefore, editedFileAfter }))
+    const env = { ...process.env, YCODE_QA_DIRECTORY: directory, YCODE_USER_DATA_DIR: data,
+      YCODE_OMP_HOME: home, YCODE_DISABLE_GPU: '1', YCODE_QA_OFFSCREEN: '1' }
+    delete env.ELECTRON_RUN_AS_NODE; delete env.ELECTRON_RENDERER_URL
+    const child = require('node:child_process').spawn(require('electron'),
+      ['--no-sandbox', '--disable-gpu-sandbox', __filename], { env, windowsHide: true, stdio: ['ignore', 'pipe', 'pipe'] })
+    let output = ''
+    child.stdout.on('data', bytes => { output += bytes; if (bytes.toString().includes('USER_MESSAGE_EDIT_')) process.stdout.write(bytes) })
+    child.stderr.on('data', bytes => { output += bytes })
+    const timer = setTimeout(() => child.kill(), 180000)
+    child.once('exit', async code => {
+      clearTimeout(timer)
+      await fs.writeFile(path.join(directory, 'process.log'), output)
+      console.log(JSON.stringify({ directory, exitCode: code }))
+      if (code) console.error(output)
+      process.exitCode = code ? 1 : 0
+    })
+  })()
+} else {
+  const { app, BrowserWindow, ipcMain } = require('electron')
+  app.disableHardwareAcceleration()
+  const directory = process.env.YCODE_QA_DIRECTORY
+  assert.ok(path.relative(path.resolve('.tmp'), directory).startsWith('edit-'))
+  const expected = JSON.parse(require('node:fs').readFileSync(path.join(directory, 'expected.json'), 'utf8'))
+  app.setPath('userData', path.join(directory, 'data')); app.setPath('sessionData', path.join(directory, 'data'))
+  app.setPath('home', path.join(directory, 'home'))
+  let main, phase = 'boot'
+  const checks = [], snapshots = {}, rendererErrors = []
+  const sentPayloads = []
+  let sendDelayMs = 0
+  const pause = ms => new Promise(resolve => setTimeout(resolve, ms))
+  async function read(source) {
+    let timer
+    try {
+      return await Promise.race([main.webContents.executeJavaScript(source), new Promise((_, reject) => {
+        timer = setTimeout(() => reject(Error('Renderer timeout: ' + source.slice(0, 100))), 15000)
+      })])
+    } catch (error) { throw Error(error.message + ' - ' + source.slice(0, 240)) } finally { clearTimeout(timer) }
+  }
+  async function wait(source, label) {
+    for (let index = 0; index < 250; index++) { const value = await read(source); if (value) return value; await pause(30) }
+    throw Error('Timeout: ' + label)
+  }
+  async function step(label) { phase = label; await fs.writeFile(path.join(directory, 'phase.txt'), label) }
+  function check(label, actual, expected) {
+    const pass = typeof expected === 'function' ? expected(actual) : JSON.stringify(actual) === JSON.stringify(expected)
+    checks.push({ label, pass, actual, expected: typeof expected === 'function' ? expected.toString() : expected })
+  }
+  async function shot(name) {
+    const capture = await main.webContents.debugger.sendCommand('Page.captureScreenshot', { format: 'png', captureBeyondViewport: false })
+    await fs.writeFile(path.join(directory, name + '.png'), Buffer.from(capture.data, 'base64'))
+  }
+
+  const lastFrame = `[...document.querySelectorAll('.cr-frame--right')].pop()`
+  const toolbarSource = `(()=>{const frame=${lastFrame};const toolbar=frame&&frame.querySelector('.cr-toolbar');if(!toolbar)return null;const style=getComputedStyle(toolbar);const time=toolbar.querySelector('.cr-toolbar__time');const buttons=[...toolbar.querySelectorAll('.cr-icon-button')].map(button=>{const bs=getComputedStyle(button);const box=button.getBoundingClientRect();const icon=button.querySelector('svg');return {action:button.getAttribute('data-action'),label:button.getAttribute('aria-label'),width:box.width,height:box.height,radius:bs.borderRadius,color:bs.color,icon:icon?[icon.getBoundingClientRect().width,icon.getBoundingClientRect().height,icon.getAttribute('viewBox')]:null}});const bubble=frame.querySelector('.cr-self-bubble').getBoundingClientRect();const frameBox=frame.getBoundingClientRect();const toolbarBox=toolbar.getBoundingClientRect();return {messageId:toolbar.getAttribute('data-message-id'),role:toolbar.getAttribute('role'),position:style.position,top:style.top,right:style.right,gap:style.gap,paddingTop:style.paddingTop,opacity:style.opacity,pointerEvents:style.pointerEvents,transition:style.transitionProperty+' '+style.transitionDuration+' '+style.transitionTimingFunction,time:time?{text:time.textContent,fontSize:getComputedStyle(time).fontSize,lineHeight:getComputedStyle(time).lineHeight,color:getComputedStyle(time).color}:null,buttons,buttonBox:[bubble.x,bubble.y,bubble.width,bubble.height],frameBox:[frameBox.x,frameBox.y,frameBox.width,frameBox.height],toolbarBox:[toolbarBox.x,toolbarBox.y,toolbarBox.width,toolbarBox.height]}})()`
+  const editorSource = `(()=>{const frame=${lastFrame};const bubble=frame&&frame.querySelector('.cr-self-bubble');const editor=frame&&frame.querySelector('.cr-user-message-editor');if(!bubble||!editor)return null;const s=getComputedStyle(editor);const footer=editor.querySelector('.cr-user-message-editor__footer');const hint=editor.querySelector('.cr-user-message-editor__hint');const hintIcon=editor.querySelector('.cr-user-message-editor__hint-icon');const actions=editor.querySelector('.cr-user-message-editor__actions');const cancel=editor.querySelector('.cr-user-message-editor__cancel');const send=editor.querySelector('.cr-user-message-editor__send');const host=editor.querySelector('.cr-input-editor-host');const editable=editor.querySelector('[data-slate-editor]');const container=editor.querySelector('.cr-input-container');const box=node=>{const rect=node.getBoundingClientRect();return [rect.x,rect.y,rect.width,rect.height]};const style=node=>getComputedStyle(node);return {bubbleClass:bubble.className,bubbleBackground:style(bubble).backgroundColor,bubbleRadius:style(bubble).borderRadius,bubblePadding:style(bubble).padding,display:s.display,width:s.width,footerPaddingTop:footer?style(footer).paddingTop:null,footerGap:footer?style(footer).gap:null,footerJustify:footer?style(footer).justifyContent:null,hintText:hint?hint.textContent:null,hintFont:hint?style(hint).fontSize+'/'+style(hint).lineHeight:null,hintColor:hint?style(hint).color:null,hintGap:hint?style(hint).gap:null,hintIcon:hintIcon?box(hintIcon):null,actionsGap:actions?style(actions).gap:null,cancel:cancel?{box:box(cancel),disabled:cancel.disabled,radius:style(cancel).borderRadius,padding:style(cancel).padding,font:style(cancel).fontSize+'/'+style(cancel).lineHeight,border:style(cancel).borderTopWidth+' '+style(cancel).borderTopColor,color:style(cancel).color,background:style(cancel).backgroundColor}:null,send:send?{box:box(send),disabled:send.disabled,busy:send.getAttribute('aria-busy'),radius:style(send).borderRadius,padding:style(send).padding,font:style(send).fontSize+'/'+style(send).lineHeight,color:style(send).color,background:style(send).backgroundColor,gap:style(send).gap,spinner:!!send.querySelector('svg')}:null,host:host?{box:box(host),minHeight:style(host).minHeight,overflow:style(host).overflowY,padding:style(host).padding}:null,editable:editable?{box:box(editable),fontSize:style(editable).fontSize,lineHeight:style(editable).lineHeight,minHeight:style(editable).minHeight,text:editable.innerText}:null,container:container?{box:box(container),background:style(container).backgroundColor,border:style(container).borderTopWidth,boxShadow:style(container).boxShadow,radius:style(container).borderRadius,paddingTop:style(container).paddingTop,minHeight:style(container).minHeight}:null,error:editor.querySelector('.cr-user-message-editor__error')?editor.querySelector('.cr-user-message-editor__error').textContent:null,toolbarMounted:!!frame.querySelector('.cr-toolbar')}})()`
+  const setEditable = text => `(()=>{const editable=document.querySelector('.cr-user-message-editor [data-slate-editor]');if(!editable)return false;editable.focus();editable.innerText=${JSON.stringify(text)};editable.dispatchEvent(new Event('input',{bubbles:true}));return true})()`
+
+  ;(async () => {
+    await import('node:url').then(({ pathToFileURL }) => import(pathToFileURL(path.resolve('out/main/index.mjs')).href))
+    await app.whenReady()
+    // 记录编辑提交负载并返回合成分支：隔离环境没有可用模型，但提交链路必须真实经过 IPC。
+    ipcMain.removeHandler('chat:send')
+    ipcMain.handle('chat:send', async (_event, payload) => {
+      if (sendDelayMs) await pause(sendDelayMs)
+      sentPayloads.push(payload)
+      const runId = 'edit-run-' + sentPayloads.length
+      const userMessage = { id: 'edit-user-' + sentPayloads.length, role: 'user', content: payload.text, createdAt: Date.now(), status: 'done', requestId: runId }
+      const assistant = { id: 'edit-assistant-' + sentPayloads.length, role: 'assistant', content: '已重新开始。', createdAt: Date.now(), status: 'done', requestId: runId, tools: [], parts: [] }
+      // ChatEvent 的 done 形状：{ runId, type:'done', content, tools }。
+      setTimeout(() => { try { main?.webContents.send('chat:event', { sessionId: payload.sessionId, runId, type: 'done', content: assistant.content, tools: [] }) } catch { /* window closed */ } }, 60)
+      return { runId, assistantMessageId: assistant.id, userMessage, messages: [userMessage, assistant] }
+    })
+    main = BrowserWindow.getAllWindows()[0]
+    main.setSize(1336, 902)
+    main.showInactive()
+    main.webContents.debugger.attach('1.3')
+    main.webContents.on('console-message', (_event, level, message) => { if (level >= 2) rendererErrors.push(message) })
+    await wait('!!document.querySelector("#root")', 'renderer root')
+    await pause(1500)
+    await step('select-session')
+    await wait(`!!document.querySelector('[data-session-id]')`, 'sidebar rows')
+    await read(`(()=>{const rows=[...document.querySelectorAll('[data-session-id]')];const row=rows.find(item=>item.textContent.includes('Edit Live'));if(!row)return false;row.click();return true})()`)
+    await wait(`!!${lastFrame}.querySelector('.cr-toolbar')`, 'user toolbar')
+    await pause(300)
+
+    await step('toolbar-idle')
+    main.webContents.sendInputEvent({ type: 'mouseMove', x: 4, y: 4 })
+    await pause(200)
+    const idle = await wait(toolbarSource, 'toolbar snapshot')
+    snapshots.idle = idle
+    const userBubbles = await read(`[...document.querySelectorAll('.cr-frame--right')].length`)
+    check('fixture renders two user messages', userBubbles, 2)
+    check('toolbar keeps the original DOM contract', idle.role === 'toolbar' && typeof idle.messageId === 'string' && idle.messageId.length > 0, true)
+    check('toolbar is absolutely positioned with right 0', idle.position === 'absolute' && idle.right === '0px', true)
+    // 原版实测（ev_245ea174…）：工具条底边与消息 frame 底边重合、右边缘对齐（frame 182.59 / toolbar 182.59、925.98 / 925.98）。
+    check('toolbar bottom and right edge align with the message frame like the original', Math.abs((idle.toolbarBox[1] + idle.toolbarBox[3]) - (idle.frameBox[1] + idle.frameBox[3])) <= 1 && Math.abs((idle.toolbarBox[0] + idle.toolbarBox[2]) - (idle.frameBox[0] + idle.frameBox[2])) <= 1, true)
+    check('toolbar gap is 8 and padding-top is 4', idle.gap === '8px' && idle.paddingTop === '4px', true)
+    check('toolbar fades with the original transition', idle.transition, 'opacity 0.2s ease-in-out')
+    check('toolbar is hidden while not hovered', idle.opacity === '0' && idle.pointerEvents === 'none', true)
+    check('toolbar time follows the 14/20 tertiary rule', idle.time.fontSize === '14px' && idle.time.lineHeight === '20px' && idle.time.color === 'rgba(0, 0, 0, 0.5)', true)
+    check('toolbar time uses HH:mm for today', /^\d{2}:\d{2}$/.test(idle.time.text), true)
+    // 该消息之后存在可回退的产物写入，因此原版会额外显示“恢复此版本”入口（ev_245ea174… 的无产物会话只有 copy + edit）。
+    check('toolbar keeps the original button set (copy + revert + edit, no resend)', idle.buttons.length, 3)
+    check('button order is copy, revert, edit like the original', idle.buttons.map(item => item.action).join(','), 'copy,revert,edit')
+    check('buttons are 24x24 with 14x14 icons and radius 6', idle.buttons.every(item => item.width === 24 && item.height === 24 && item.radius === '6px' && item.icon[0] === 14 && item.icon[1] === 14), true)
+    check('copy/edit keep the 16x16 viewBox while revert keeps the recovered 14x14 one', idle.buttons.map(item => item.action + ':' + item.icon[2]).join(','), 'copy:0 0 16 16,revert:0 0 14 14,edit:0 0 16 16')
+    check('buttons expose the original aria labels', idle.buttons.map(item => item.label).join(','), '复制,恢复此版本,编辑')
+
+    await step('toolbar-hover')
+    const bubble = idle.buttons[0] && (await read(`(()=>{const box=${lastFrame}.querySelector('.cr-self-bubble').getBoundingClientRect();return {x:Math.round(box.x+box.width/2),y:Math.round(box.y+box.height/2)}})()`))
+    main.webContents.sendInputEvent({ type: 'mouseMove', x: bubble.x, y: bubble.y })
+    await pause(400)
+    check('hovering the message reveals the toolbar', await read(`getComputedStyle(${lastFrame}.querySelector('.cr-toolbar')).opacity`), '1')
+    check('hovered toolbar accepts pointer events', await read(`getComputedStyle(${lastFrame}.querySelector('.cr-toolbar')).pointerEvents`), 'auto')
+    await shot('toolbar-hover')
+
+    await step('open-editor')
+    await read(`(()=>{const button=${lastFrame}.querySelector('.cr-toolbar .cr-icon-button[data-action="edit"]');if(!button)return false;button.click();return true})()`)
+    const editor = await wait(editorSource, 'editor snapshot')
+    snapshots.editor = editor
+    check('editing unmounts the hover toolbar like the original', editor.toolbarMounted, false)
+    check('bubble gets the editing class, surface and 8x12 padding', editor.bubbleClass.includes('cr-self-bubble--editing') && editor.bubbleBackground === 'rgb(242, 242, 242)' && editor.bubblePadding === '8px 12px', true)
+    check('editor container is transparent with no border or shadow', editor.container.background === 'rgba(0, 0, 0, 0)' && editor.container.border === '0px' && editor.container.boxShadow === 'none' && editor.container.radius === '0px', true)
+    check('editor container keeps min-height 50 with no top padding', editor.container.minHeight === '50px' && editor.container.paddingTop === '0px', true)
+    check('editor host keeps the 64px min-height without padding', editor.host.minHeight === '64px' && editor.host.padding === '0px', true)
+    check('editable uses 15px/1.75 like the original', editor.editable.fontSize === '15px' && editor.editable.lineHeight === '26.25px', true)
+    check('editable keeps the original min-height 50px', editor.editable.minHeight === '50px', true)
+    check('editable is prefilled with the message text', editor.editable.text, 'workbuddy是否有目标模式')
+    check('footer uses 12px top padding, 12px gap and space-between', editor.footerPaddingTop === '12px' && editor.footerGap === '12px' && editor.footerJustify === 'space-between', true)
+    check('hint keeps the recovered copy', editor.hintText, '编辑后将从此处重新开始对话，产物也将回退至此信息前版本')
+    check('hint uses 13/18 with 4px gap and 14x14 icon', editor.hintFont === '13px/18px' && editor.hintGap === '4px' && editor.hintIcon[2] === 14 && editor.hintIcon[3] === 14, true)
+    check('actions gap is 8', editor.actionsGap, '8px')
+    check('cancel is 62x32 with 8px radius and 5px 16px padding', Math.round(editor.cancel.box[2]) === 62 && Math.round(editor.cancel.box[3]) === 32 && editor.cancel.radius === '8px' && editor.cancel.padding === '5px 16px', true)
+    check('cancel uses the default border and secondary text', editor.cancel.border === '1px rgb(235, 235, 235)' && editor.cancel.color === 'rgba(0, 0, 0, 0.7)', true)
+    check('send is 60x30 on the contrast surface', Math.round(editor.send.box[2]) === 60 && Math.round(editor.send.box[3]) === 30 && editor.send.background === 'rgb(26, 26, 26)' && editor.send.color === 'rgb(255, 255, 255)', true)
+    check('send button is not disabled when content is unchanged', editor.send.disabled, false)
+    check('no error is shown while content is valid', editor.error, null)
+    await shot('editor-open')
+
+    await step('cancel-restores')
+    await read(setEditable('改动但不提交'))
+    await pause(120)
+    check('edited text is reflected in the field', await read(`document.querySelector('.cr-user-message-editor [data-slate-editor]').innerText`), '改动但不提交')
+    await read(`document.querySelector('.cr-user-message-editor__cancel').click()`)
+    await pause(250)
+    check('cancel closes the editor', await read(`!!document.querySelector('.cr-user-message-editor')`), false)
+    check('cancel restores the original bubble text', await read(`[...document.querySelectorAll('.cr-frame--right')].pop().querySelector('.cr-self-bubble').textContent`), 'workbuddy是否有目标模式')
+
+    await step('outside-mousedown-keeps-changes')
+    await read(`(()=>{const bubble=[...document.querySelectorAll('.cr-frame--right')].pop();bubble.scrollIntoView({block:'center'});bubble.dispatchEvent(new MouseEvent('mousemove',{bubbles:true}));bubble.dispatchEvent(new MouseEvent('mouseover',{bubbles:true}));return true})()`)
+    main.webContents.sendInputEvent({ type: 'mouseMove', x: bubble.x, y: bubble.y })
+    await pause(350)
+    await read(`${lastFrame}.querySelector('.cr-toolbar .cr-icon-button[data-action="edit"]').click()`)
+    await wait(`!!document.querySelector('.cr-user-message-editor')`, 'editor reopen')
+    await read(setEditable('有改动时点击外部'))
+    await pause(120)
+    await read(`document.body.dispatchEvent(new MouseEvent('mousedown',{bubbles:true}))`)
+    await pause(200)
+    check('mousedown outside keeps the editor when there are changes', await read(`!!document.querySelector('.cr-user-message-editor')`), true)
+
+    await step('empty-validation')
+    await read(setEditable('   '))
+    await pause(150)
+    const emptyEditor = await read(editorSource)
+    check('blank content raises the recovered empty error', emptyEditor.error, '消息内容不能为空')
+    check('send is disabled while the content is empty', emptyEditor.send.disabled, true)
+    await read(`document.querySelector('.cr-user-message-editor__send').click()`)
+    await pause(200)
+    check('blocked submit never reaches chat:send', sentPayloads.filter(item => item.action === 'edit').length, 0)
+    await read(setEditable('workbuddy是否有目标模式'))
+    await pause(120)
+    check('error clears once content is valid again', await read(`!!document.querySelector('.cr-user-message-editor__error')`), false)
+
+    await step('submit-edit')
+    sendDelayMs = 700
+    await read(setEditable('workbuddy 有目标模式吗'))
+    await pause(120)
+    await read(`document.querySelector('.cr-user-message-editor__send').click()`)
+    await pause(250)
+    const submitting = await read(editorSource)
+    snapshots.submitting = submitting
+    check('submitting disables cancel and send with aria-busy', submitting.cancel.disabled === true && submitting.send.disabled === true && submitting.send.busy === 'true', true)
+    check('submitting shows the spinner inside the send button', submitting.send.spinner, true)
+    for (let index = 0; index < 60 && sentPayloads.length === 0; index++) await pause(50)
+    const editPayload = sentPayloads.find(item => item.action === 'edit')
+    check('edit submit reaches chat:send through IPC', !!editPayload, true)
+    check('edit payload carries action=edit with the original message id', editPayload.action === 'edit' && editPayload.fromMessageId === expected.secondUserId, true)
+    check('edit payload sends the modified text', editPayload.text, 'workbuddy 有目标模式吗')
+    await wait(`!document.querySelector('.cr-user-message-editor')`, 'editor closed after submit')
+    check('submit closes the editor', await read(`!!document.querySelector('.cr-user-message-editor')`), false)
+    // 产物回退由真实主进程语义覆盖：npm run test:conversation-ipc 的 testEditArtifactRollback
+    // （本脚本把 chat:send 换成 stub，因此不在此处重复断言文件内容）。
+    await shot('editor-submitted')
+
+    await step('enter-submits')
+    sendDelayMs = 0
+    await read(`(()=>{const bubble=[...document.querySelectorAll('.cr-frame--right')].pop();bubble.dispatchEvent(new MouseEvent('mousemove',{bubbles:true}));return true})()`)
+    main.webContents.sendInputEvent({ type: 'mouseMove', x: bubble.x, y: bubble.y })
+    await pause(300)
+    await read(`(()=>{const button=${lastFrame}.querySelector('.cr-toolbar .cr-icon-button[data-action="edit"]');if(!button)return false;button.click();return true})()`)
+    await wait(`!!document.querySelector('.cr-user-message-editor')`, 'editor for enter test')
+    await read(setEditable('回车提交'))
+    await pause(120)
+    await read(`document.querySelector('.cr-user-message-editor [data-slate-editor]').dispatchEvent(new KeyboardEvent('keydown',{key:'Enter',bubbles:true}))`)
+    for (let index = 0; index < 60 && sentPayloads.filter(item => item.action === 'edit').length < 2; index++) await pause(50)
+    check('Enter submits the edited message like the original onEnterSend', sentPayloads.filter(item => item.action === 'edit').length, 2)
+    check('second edit payload keeps the typed text', sentPayloads.filter(item => item.action === 'edit')[1].text, '回车提交')
+    await wait(`!document.querySelector('.cr-user-message-editor')`, 'editor closed after enter submit')
+    check('no renderer error logs', rendererErrors, [])
+
+    const report = { result: checks.every(item => item.pass) ? 'PASS' : 'FAIL',
+      scope: 'Real isolated YCode App/preload/IPC/renderer. chat:send is stubbed in the test main process to record payloads because the sandbox has no model.',
+      sourceEvidence: ['ev_245ea1740cde21869500348e47cf9663a1ea72943ccfe79c163a6838a153bfd3', 'ev_5dd78e06e75b3a29b656d328c2efc2a820ea197e8204a39840207188a6496a0f',
+        'ev_ee345b160e5f520ed866c1059b7c72e77b34e49bf1ce407cd266ea886aa86405', 'src-CyXHA0IC.css a5e26b537bb50323aefbf25abddad52e288dd3868598be8d255d70886fe77cfe'],
+      snapshots, checks, rendererErrors }
+    await fs.writeFile(path.join(directory, 'report.json'), JSON.stringify(report, null, 2))
+    console.log('USER_MESSAGE_EDIT_' + report.result + ' ' + directory)
+    for (const failure of checks.filter(item => !item.pass)) console.log('USER_MESSAGE_EDIT_FAILURE ' + JSON.stringify(failure))
+    app.exit(report.result === 'PASS' ? 0 : 1)
+  })().catch(async error => {
+    await fs.writeFile(path.join(directory, 'failure.json'), JSON.stringify({ phase, error: String(error), stack: error.stack, checks, snapshots, rendererErrors }, null, 2))
+    console.error(error); if (main) await shot('failure').catch(() => undefined); app.exit(1)
+  })
+}

src/main/ipc.ts

@@ -29,7 +29,7 @@ import { createInteractionBroker, respondToInteraction } from './interaction-bro
 import { attachmentPrompt, commitAttachments, getAttachment, removeAttachment, stageAttachment, stageAttachmentPath } from './attachments'
 import { transcribeAudio } from './speech'
 import { getRevertChanges } from '@shared/revert'
-import { restoreWorkspaceFiles } from './workspace-revert'
+import { restoreWorkspaceFiles, rollbackEditedArtifacts } from './workspace-revert'
 import { assistantWireHistory } from './agent/history'
 import * as models from './models'
 import * as workspaces from './workspaces'
@@ -563,6 +563,9 @@ export function registerIpc(getWindow: () => BrowserWindow | null): void {
       }
       const target = history[targetIndex]
       if (!target || target.role !== 'user') throw new Error('未找到对应用户消息')
+      // 原版编辑语义（userMessage.edit.hint）：产物回退至此消息前版本，再从此处重新开始对话。
+      const editUndo = payload.action === 'edit' ? await rollbackEditedArtifacts(workspaceRoot, history, payload.fromMessageId!) : undefined
+      try {
         if (kernel) {
         if (target.nativeSessionPath && target.nativeSessionPath !== ompSessionPath(sessionId)) throw new Error('这条历史消息没有当前 OMP 会话的分支记录')
         let entryId = target.nativeEntryId
@@ -589,6 +592,10 @@ export function registerIpc(getWindow: () => BrowserWindow | null): void {
         const entry = ompKernels.get(sessionId)
         if (entry && entryId) entry.appliedBranchId = entryId
         }
+      } catch (error) {
+        if (editUndo) await editUndo().catch(() => undefined)
+        throw error
+      }
       history = history.slice(0, targetIndex)
     }
     const runId = randomUUID()

src/main/workspace-revert.ts

@@ -2,6 +2,8 @@ import { promises as fs } from 'node:fs'
 import { dirname, isAbsolute, relative, resolve, sep, join } from 'node:path'
 import { randomUUID } from 'node:crypto'
 import type { RevertChange } from '@shared/revert'
+import { getRevertChanges } from '@shared/revert'
+import type { ChatMessage } from '@shared/types'
 
 async function replaceFile(path: string, content: string | null): Promise<void> {
   if (content === null) { await fs.unlink(path); return }
@@ -33,3 +35,14 @@ export async function restoreWorkspaceFiles(workspace: string, changes: RevertCh
   } catch (error) { await undo(); throw error }
   return undo
 }
+
+/**
+ * 编辑提交前的产物回退（原版 userMessage.edit.hint：产物回退至此消息前版本）。
+ * 返回撤销函数；该消息之后没有可回退的写入时返回 undefined。
+ * 记录不完整时由 getRevertChanges 抛错，调用方应中止提交而不是静默保留文件修改。
+ */
+export async function rollbackEditedArtifacts(workspace: string, messages: ChatMessage[], userMessageId: string): Promise<(() => Promise<void>) | undefined> {
+  const changes = getRevertChanges(messages, userMessageId)
+  if (!changes.length) return undefined
+  return restoreWorkspaceFiles(workspace, changes)
+}

src/renderer/src/components/ChatPane.tsx

@@ -111,6 +111,7 @@ export default function ChatPane({ rightVisible, onToggleRight, onOpenSettings,
   useEffect(() => { setSkillPicker(null); setExpertPicker(null) }, [draftKey, hidden])
   const [permissionMode, setPermissionMode] = useState<PermissionMode>('default-sandbox')
   const [confirmFullAccess, setConfirmFullAccess] = useState(true)
+  const [editingMessageId, setEditingMessageId] = useState<string | null>(null)
   const [revertTarget, setRevertTarget] = useState<ChatMessage | null>(null)
   const [revertError, setRevertError] = useState<string | null>(null)
   const [reverting, setReverting] = useState(false)
@@ -205,17 +206,23 @@ export default function ChatPane({ rightVisible, onToggleRight, onOpenSettings,
   const submit = async ({ text, attachments, resources, quotes, mode }: ComposerSendPayload): Promise<void> => {
     if ((!text && !attachments.length && !quotes.length) || running || sending) return
     followBottom.current = true
-    await send(text, { attachments, resources, quotes, skillIds: entry.skills?.map(item => item.id), permissionMode: mode, ...(entry.editingId ? { fromMessageId: entry.editingId, action: 'edit' as const } : {}) })
+    await send(text, { attachments, resources, quotes, skillIds: entry.skills?.map(item => item.id), permissionMode: mode })
     const destination = draftMoves.current.get(draftKey) ?? draftKey
     draftMoves.current.delete(draftKey)
     setDrafts((all) => ({ ...all, [draftKey]: { text: '', attachments: [] }, [destination]: { text: '', attachments: [] } }))
   }
 
-  const edit = (message: ChatMessage): void => {
-    setDrafts((all) => ({ ...all, [draftKey]: { text: message.content, attachments: message.attachments ?? [], resources: message.resources ?? [], quotes: message.quotes, skills: message.skills, editingId: message.id } }))
-    document.querySelector<HTMLTextAreaElement>('.wb-composer__input')?.focus()
+  /** 就地编辑：进入、取消、提交（提交走 send 的 action='edit' 分支，与原版 message.edit.submit 对齐）。 */
+  const startEdit = (message: ChatMessage): void => {
+    if (running || sending) return
+    setEditingMessageId(message.id)
+  }
+  const cancelEdit = (): void => setEditingMessageId(null)
+  const submitEdit = async (message: ChatMessage, text: string): Promise<void> => {
+    await send(text, { attachments: message.attachments, resources: message.resources, quotes: message.quotes,
+      skillIds: message.skills?.map(item => item.id), permissionMode, fromMessageId: message.id, action: 'edit' })
+    setEditingMessageId(null)
   }
-  const resend = (message: ChatMessage): Promise<void> => send(message.content, { attachments: message.attachments, resources: message.resources, quotes: message.quotes, skillIds: message.skills?.map(item => item.id), permissionMode, fromMessageId: message.id, action: 'resend' })
   const regenerate = (_requestId: string, message: ChatMessage): Promise<void> => {
     const preceding = messages.slice(0, messages.findIndex((item) => item.id === message.id)).findLast((item) => item.role === 'user')
     return preceding ? send(preceding.content, { attachments: preceding.attachments, resources: preceding.resources, quotes: preceding.quotes, skillIds: preceding.skills?.map(item => item.id), permissionMode, fromMessageId: message.id, action: 'regenerate' }) : Promise.resolve()
@@ -255,7 +262,6 @@ export default function ChatPane({ rightVisible, onToggleRight, onOpenSettings,
   /** 输入框（首页与会话内共用；首页编辑区更高，由 CSS 的 data-variant 区分） */
   const composer = (
     <>
-      {entry.editingId && <div className="composer__edit-banner">编辑消息<button type="button" onClick={() => setDrafts((all) => ({ ...all, [draftKey]: { ...entry, editingId: undefined } }))}>取消</button></div>}
       <ComposerControls key={draftKey} className={isHome ? 'wb-composer--home' : undefined} sessionId={currentId} value={draft} onChange={value => { setDraft(value); if (value === '/') setSkillPicker({ owner: draftKey, anchor: document.querySelector('.wb-composer__add-button') }) }} attachments={entry.attachments} resources={entry.resources ?? []}
         onOpenSkills={anchor => setSkillPicker({ owner: draftKey, anchor })}
         onOpenExperts={anchor => { setSkillPicker(null); setExpertPicker({ owner: draftKey, anchor }); void window.ycode.experts.list().then(setLocalExperts).catch(error => setExpertError(String(error))) }}
@@ -375,9 +381,10 @@ export default function ChatPane({ rightVisible, onToggleRight, onOpenSettings,
                   actions={{ busyState: running || sending ? 'talking' : 'idle', canRevert: canRevert(message),
                     canRegenerate: !running && !sending, isSessionActive: true, isLastAssistant: message.id === lastAssistantId,
                     requestId: message.requestId, requestMessages: message.requestId ? messages.filter((item) => item.requestId === message.requestId) : undefined,
-                    onEdit: edit, onResend: resend, onRegenerate: regenerate,
+                    onRegenerate: regenerate,
                     onRevert: canRevert(message) ? () => { setRevertError(null); setRevertTarget(message) } : undefined,
-                    onFeedback: (target, value) => feedback(target.id, value) }} />
+                    onFeedback: (target, value) => feedback(target.id, value) }}
+                  editingMessageId={editingMessageId} onStartEdit={startEdit} onCancelEdit={cancelEdit} onSubmitEdit={submitEdit} />
               ))}
             </div></div>
           </div>

src/renderer/src/components/MessageBubble.tsx

@@ -13,6 +13,8 @@ import { computeSourceFoldSummary } from '../workbuddy/conversation/recovered-fo
 import { Fragment, useState } from 'react'
 import type { MessageActionToolbarProps } from '../workbuddy/message-actions/MessageActionToolbar'
 import { MessageActionToolbar } from '../workbuddy/message-actions/MessageActionToolbar'
+import { UserMessageToolbar } from '../workbuddy/message-actions/UserMessageToolbar'
+import { UserMessageEditor } from '../workbuddy/conversation/UserMessageEditor'
 import { PermissionConfirm, QuestionAnswerTranscript, ThinkingBlock, PlanCreateBlock, TaskBlock, ToolCallRenderer, type ConversationToolCall } from '../workbuddy/conversation'
 import { conversationLabel } from '../workbuddy/conversation/labels'
 import { downloadInHost, openPathInHost } from '../workbuddy/host'
@@ -32,6 +34,11 @@ interface Props {
   quotedSourceIds?: readonly string[]
   darkMode?: boolean
   actions?: Omit<MessageActionToolbarProps, 'message'>
+  /** 正在就地编辑的消息 id；命中时用编辑容器替换气泡内容。 */
+  editingMessageId?: string | null
+  onStartEdit?(message: ChatMessage): void
+  onCancelEdit?(): void
+  onSubmitEdit?(message: ChatMessage, text: string): Promise<void>
   onRespond?(id: string, response: InteractionResponse): Promise<void>
   sessionId?: string | null
   onBuildPlan?(plan: PlanContent): Promise<void>
@@ -40,7 +47,7 @@ interface Props {
   onShowArtifacts?(): void
 }
 
-export default function MessageBubble({ message, onQuote, quotedSourceIds, darkMode, actions, onRespond, sessionId, onBuildPlan, buildingPlanId, artifactCount = 0, onShowArtifacts }: Props): React.JSX.Element {
+export default function MessageBubble({ message, onQuote, quotedSourceIds, darkMode, actions, editingMessageId, onStartEdit, onCancelEdit, onSubmitEdit, onRespond, sessionId, onBuildPlan, buildingPlanId, artifactCount = 0, onShowArtifacts }: Props): React.JSX.Element {
   const [actionError, setActionError] = useState<string | null>(null)
   const [liveEventsExpanded, setLiveEventsExpanded] = useState(false)
   const perform = (action: () => Promise<unknown>): void => {
@@ -52,21 +59,25 @@ export default function MessageBubble({ message, onQuote, quotedSourceIds, darkM
   const downloadPlan = (plan: PlanContent): void => perform(() => downloadInHost({ filename: `${plan.title.replace(/[<>:"/\\|?*]/g, '_') || 'plan'}.md`, mimeType: 'text/markdown', encoding: 'utf8', data: planMarkdown(plan) }))
   // 用户消息：右侧灰色气泡
   if (message.role === 'user') {
+    const editing = editingMessageId === message.id && !!onSubmitEdit
     return (
       <div className="msg--user cr-frame cr-frame--right"><div className="cr-frame__content">
         <div className="cr-self-message"><div className="cr-self-message__content">
-        <div className="bubble cr-self-bubble">
-          {!!message.quotes?.length && <div className="cr-context-chips" aria-label="引用的内容">
+        <div className={`bubble cr-self-bubble${editing ? ' cr-self-bubble--editing' : ''}`}>
+          {!editing && !!message.quotes?.length && <div className="cr-context-chips" aria-label="引用的内容">
             {message.quotes.map((quote) => <MessageQuoteTag key={quote.id} quote={quote} readOnly />)}
           </div>}
-          <div className="cr-user-content"><div className="yc-user-editable">{message.content.split('\n').map((line, index) => <p key={index}><span className="yc-user-leaf"><span>{line || <br />}</span></span></p>)}</div></div>
+          {editing ? <UserMessageEditor message={message} onSubmit={(text) => onSubmitEdit!(message, text)} onCancel={() => onCancelEdit?.()} />
+            : <div className="cr-user-content"><div className="yc-user-editable">{message.content.split('\n').map((line, index) => <p key={index}><span className="yc-user-leaf"><span>{line || <br />}</span></span></p>)}</div></div>}
         </div>
-        {!!message.skills?.length && <div className="wb-composer__resources" aria-label="使用的技能">{message.skills.map(skill => <span className="wb-composer__resource" data-skill-uri={skill.uri} key={skill.id}>{skill.name}</span>)}</div>}
-        {message.attachments?.map((attachment) => <div className="msg__attachment" key={attachment.id}>
+        {!editing && !!message.skills?.length && <div className="wb-composer__resources" aria-label="使用的技能">{message.skills.map(skill => <span className="wb-composer__resource" data-skill-uri={skill.uri} key={skill.id}>{skill.name}</span>)}</div>}
+        {!editing && message.attachments?.map((attachment) => <div className="msg__attachment" key={attachment.id}>
           {attachment.previewUrl ? <MarkdownContent content={`![${attachment.name.replace(/[\[\]]/g, '')}](${attachment.previewUrl})`} messageId={attachment.id} darkMode={darkMode} /> : <span>{attachment.name}</span>}
         </div>)}
         </div></div>
-        <MessageActionToolbar message={message} {...actions} />
+        {!editing && <UserMessageToolbar message={message} canEdit={actions?.busyState === 'idle' && !!onStartEdit} onEdit={onStartEdit}
+          onCopy={actions?.onCopy} onRevert={actions?.onRevert}
+          revertDisabled={actions?.canRevert === false || actions?.rollbackPending} />}
       </div></div>
     )
   }

src/renderer/src/workbuddy/conversation/MessageEditorIcons.tsx

@@ -0,0 +1,40 @@
+import type { SVGProps } from 'react'
+
+type IconProps = SVGProps<SVGSVGElement>
+
+/**
+ * WorkBuddy 5.8.3 渲染器 RevertToBeforeIcon（回收源码 .tmp/wb-src-DbE1_mgM.js）。
+ * 用于用户消息工具条的“恢复此版本”入口（userMessage.action.revert）。
+ */
+export function RevertToBeforeIcon({ className, style, ...props }: IconProps): React.JSX.Element {
+  return (
+    <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 14 14" fill="none" className={className} style={style} {...props}>
+      <path d="M2.0917 2.9167L-0.4125 5.4209Q-0.5904 5.5888 -0.5833 5.8333Q-0.5904 6.0779 -0.4125 6.2458Q-0.2445 6.4237 0 6.4167Q0.2445 6.4237 0.4125 6.2458L3.3291 3.3291Q3.507 3.1612 3.5 2.9167Q3.507 2.6721 3.3291 2.5042L0.4125 -0.4125Q0.2445 -0.5904 0 -0.5833Q-0.2445 -0.5904 -0.4125 -0.4125Q-0.5904 -0.2445 -0.5833 0Q-0.5904 0.2445 -0.4125 0.4125L2.0917 2.9167Z" fill="currentColor" fillRule="evenodd" transform="matrix(-1 0 0 1 5.25 2.33301)" />
+      <path d="M3.2083 0.5833L9.3333 0.5833Q9.5779 0.5904 9.7458 0.4125Q9.9237 0.2445 9.9167 0Q9.9237 -0.2445 9.7458 -0.4125Q9.5779 -0.5904 9.3333 -0.5833L3.2083 -0.5833Q1.6378 -0.5833 0.5272 0.5272Q-0.5833 1.6378 -0.5833 3.2083Q-0.5833 4.7789 0.5272 5.8894Q1.6378 7 3.2083 7L5.25 7Q5.4945 7.007 5.6625 6.8291Q5.8404 6.6612 5.8333 6.4167Q5.8404 6.1721 5.6625 6.0042Q5.4945 5.8263 5.25 5.8333L3.2083 5.8333Q2.121 5.8333 1.3522 5.0645Q0.5833 4.2956 0.5833 3.2083Q0.5833 2.121 1.3522 1.3522Q2.121 0.5833 3.2083 0.5833Z" fill="currentColor" fillRule="evenodd" transform="matrix(-1 0 0 1 11.6665 5.25)" />
+    </svg>
+  )
+}
+
+/**
+ * 编辑框提示图标（InfoIcon）。REA ev_ee345b160e5f520ed866c1059b7c72e77b34e49bf1ce407cd266ea886aa86405
+ * 运行时 svg_nodes：14×14，viewBox 0 0 16 16。
+ */
+export function EditorInfoIcon({ className, ...props }: IconProps): React.JSX.Element {
+  return (
+    <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 16 16" fill="none" className={className} {...props}>
+      <circle cx="8" cy="8" r="6.5" stroke="currentColor" strokeWidth="1.5" />
+      <path d="M8 7V11" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" />
+      <circle cx="8" cy="5" r="0.75" fill="currentColor" />
+    </svg>
+  )
+}
+
+/** WorkBuddy 5.8.3 渲染器 LoadingSpinnerIcon（size=1 → 12px，cr-input-spin 0.8s 线性无限旋转）。 */
+export function EditorSpinnerIcon(): React.JSX.Element {
+  return (
+    <svg width="12" height="12" viewBox="0 0 12 12" fill="none" style={{ animation: 'cr-input-spin 0.8s linear infinite' }}>
+      <circle cx="6" cy="6" r="5" stroke="currentColor" strokeOpacity="0.25" strokeWidth="1.5" />
+      <path d="M11 6a5 5 0 0 0-5-5" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" />
+    </svg>
+  )
+}

src/renderer/src/workbuddy/conversation/UserMessageEditor.tsx

@@ -0,0 +1,160 @@
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
+import type { ChatMessage } from '@shared/types'
+import { EditorInfoIcon, EditorSpinnerIcon } from './MessageEditorIcons'
+import { sourceConversationLabel } from './source-labels'
+import './message-edit-source.css'
+
+/** WorkBuddy 5.8.3 `vJ = 1e4`：编辑内容上限 10000 字符。 */
+export const USER_MESSAGE_EDIT_MAX_LENGTH = 10_000
+
+/** 原版 `shouldDismissEditOnOutsideMouseDown` 的豁免选择器。 */
+const DISMISS_SAFE_SELECTORS = [
+  '.cr-trigger-search-panel',
+  '.cr-popover',
+  '.cr-sub-menu__overlay',
+  '.cr-tooltip',
+  '.wb-tooltip',
+  '.cb-context-menu'
+].join(',')
+
+interface Props {
+  message: ChatMessage
+  onSubmit(text: string): Promise<void>
+  onCancel(): void
+}
+
+function readEditableText(editable: HTMLDivElement | null): string {
+  if (!editable) return ''
+  const raw = editable.innerText.replace(/\r\n/g, '\n')
+  return raw.endsWith('\n') ? raw.slice(0, -1) : raw
+}
+
+function hasEditableContent(text: string): boolean {
+  return text.split('\n').some((line) => line.trim().length > 0)
+}
+
+/**
+ * 用户消息就地编辑容器。
+ * 结构、校验、按钮与失焦规则来自 WorkBuddy 5.8.3 渲染器 UserMessageEditorContent
+ * （REA 回收 .tmp/wb-src-DbE1_mgM.js）与运行时采集 ev_5dd78e06…/ev_ee345b16…。
+ */
+export function UserMessageEditor({ message, onSubmit, onCancel }: Props): React.JSX.Element {
+  const rootRef = useRef<HTMLDivElement>(null)
+  const editableRef = useRef<HTMLDivElement>(null)
+  const submittingRef = useRef(false)
+  const [text, setText] = useState(message.content)
+  const [focused, setFocused] = useState(false)
+  const [submitting, setSubmitting] = useState(false)
+  const [submitError, setSubmitError] = useState<string | null>(null)
+
+  // 非受控写入初始内容，并把光标放到末尾（原版 prepareEditDraft + 自动聚焦）。
+  useEffect(() => {
+    const editable = editableRef.current
+    if (!editable) return
+    editable.innerText = message.content
+    editable.focus()
+    const range = document.createRange()
+    range.selectNodeContents(editable)
+    range.collapse(false)
+    const selection = window.getSelection()
+    selection?.removeAllRanges()
+    selection?.addRange(range)
+  }, [message.id, message.content])
+
+  const validation = useMemo<'empty' | 'too-long' | null>(() => {
+    if (!hasEditableContent(text)) return 'empty'
+    if (text.length > USER_MESSAGE_EDIT_MAX_LENGTH) return 'too-long'
+    return null
+  }, [text])
+
+  const validationMessage = validation === 'empty'
+    ? sourceConversationLabel('userMessage.edit.emptyError')
+    : validation === 'too-long'
+      ? sourceConversationLabel('userMessage.edit.maxLengthError', { maxLength: USER_MESSAGE_EDIT_MAX_LENGTH.toLocaleString() })
+      : null
+  const error = validationMessage ?? submitError
+  const hasChanges = text !== message.content
+
+  const submit = useCallback((): void => {
+    if (submittingRef.current) return
+    const current = readEditableText(editableRef.current)
+    if (!hasEditableContent(current) || current.length > USER_MESSAGE_EDIT_MAX_LENGTH) return
+    submittingRef.current = true
+    setSubmitting(true)
+    setSubmitError(null)
+    void onSubmit(current)
+      .catch((reason: unknown) => {
+        const detail = reason instanceof Error ? reason.message : String(reason)
+        setSubmitError(/正在运行|尚未结束|in progress/i.test(detail)
+          ? sourceConversationLabel('userMessage.edit.error.retryLater')
+          : sourceConversationLabel('userMessage.edit.sendFailed'))
+      })
+      .finally(() => {
+        submittingRef.current = false
+        setSubmitting(false)
+      })
+  }, [onSubmit])
+
+  // 原版：提交中或有改动时不因外部 mousedown 关闭。
+  useEffect(() => {
+    const handleMouseDown = (event: MouseEvent): void => {
+      if (submittingRef.current || hasChanges) return
+      const target = event.target instanceof Element ? event.target : null
+      if (!target) return
+      if (rootRef.current?.contains(target)) return
+      if (target.closest(DISMISS_SAFE_SELECTORS)) return
+      onCancel()
+    }
+    document.addEventListener('mousedown', handleMouseDown)
+    return () => document.removeEventListener('mousedown', handleMouseDown)
+  }, [hasChanges, onCancel])
+
+  const handleKeyDown = (event: React.KeyboardEvent<HTMLDivElement>): void => {
+    if (event.key !== 'Enter' || event.shiftKey || event.nativeEvent.isComposing) return
+    event.preventDefault()
+    submit()
+  }
+
+  return (
+    <div className="cr-user-message-editor" ref={rootRef}>
+      <div className="cr-input-container-wrapper">
+        <div className={`cr-input-container${focused ? ' cr-input-container--focused' : ''}`}>
+          <div className="cr-input-editor-host">
+            <div
+              ref={editableRef}
+              className="cr-input-editor-content"
+              contentEditable
+              suppressContentEditableWarning
+              data-slate-editor="true"
+              role="textbox"
+              aria-multiline="true"
+              aria-label={sourceConversationLabel('userMessage.action.edit')}
+              onInput={(event) => setText(readEditableText(event.currentTarget))}
+              onFocus={() => setFocused(true)}
+              onBlur={() => setFocused(false)}
+              onKeyDown={handleKeyDown}
+            />
+          </div>
+        </div>
+      </div>
+      {error ? <div className="cr-user-message-editor__error" role="alert">{error}</div> : null}
+      <div className="cr-user-message-editor__footer">
+        <div className="cr-user-message-editor__hint">
+          <EditorInfoIcon className="cr-user-message-editor__hint-icon" />
+          <span>{sourceConversationLabel('userMessage.edit.hint')}</span>
+        </div>
+        <div className="cr-user-message-editor__actions">
+          <button type="button" className="cr-user-message-editor__cancel" disabled={submitting} onClick={onCancel}>
+            {sourceConversationLabel('userMessage.edit.cancel')}
+          </button>
+          <button type="button" className="cr-user-message-editor__send" disabled={submitting || !!validationMessage} aria-busy={submitting} onClick={submit}>
+            {submitting ? <EditorSpinnerIcon /> : null}
+            <span>{sourceConversationLabel('userMessage.edit.send')}</span>
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}
+
+export default UserMessageEditor

src/renderer/src/workbuddy/conversation/message-edit-source.css

@@ -0,0 +1,143 @@
+/*
+ * 用户消息就地编辑：WorkBuddy 5.8.3 回收样式表 src-CyXHA0IC.css
+ * sha256 a5e26b537bb50323aefbf25abddad52e288dd3868598be8d255d70886fe77cfe
+ * REA 证据：ev_245ea1740cde21869500348e47cf9663a1ea72943ccfe79c163a6838a153bfd3（打开/取消编辑）、
+ *           ev_5dd78e06e75b3a29b656d328c2efc2a820ea197e8204a39840207188a6496a0f（保持编辑器打开）、
+ *           ev_ee345b160e5f520ed866c1059b7c72e77b34e49bf1ce407cd266ea886aa86405（编辑态布局快照）。
+ * 说明：`.cr-self-bubble--editing` 与 `.cr-frame--right .cr-frame__content:has(.cr-user-message-editor)`
+ * 已在 source-styles.css 中，这里不重复。
+ */
+
+.cr-user-message-editor .cr-input-container {
+  box-shadow: none;
+  background: 0 0;
+  border: 0;
+  border-radius: 0;
+  padding-top: 0;
+  /* 原版 InputBox minHeight=50：编辑容器单行时高 50（ev_ee345b16 计算样式 min-height:50px）。 */
+  min-height: 50px;
+}
+
+.cr-user-message-editor .cr-input-container--focused,
+.cr-user-message-editor .cr-input-container:focus-within {
+  box-shadow: none;
+}
+
+.cr-user-message-editor .cr-input-editor-host {
+  max-height: 310px;
+  padding: 0;
+}
+
+.cr-user-message-editor .cr-input-editor-host [contenteditable='true'] {
+  min-height: 50px !important;
+}
+
+.cr-user-message-editor .cr-input-editor-host [data-slate-editor] {
+  font-size: 15px;
+  line-height: 1.75 !important;
+}
+
+.cr-user-message-editor .cr-input-editor-host [data-slate-editor] * {
+  line-height: 1.75 !important;
+}
+
+.cr-user-message-editor__error {
+  color: var(--cr-text-error);
+  padding-top: 6px;
+  font-size: 13px;
+  line-height: 18px;
+}
+
+.cr-user-message-editor__footer {
+  justify-content: space-between;
+  align-items: center;
+  gap: 12px;
+  padding-top: 12px;
+  display: flex;
+}
+
+.cr-user-message-editor__hint {
+  min-width: 0;
+  color: var(--cr-text-tertiary);
+  flex: 1;
+  align-items: center;
+  gap: 4px;
+  font-size: 13px;
+  line-height: 18px;
+  display: flex;
+}
+
+.cr-user-message-editor__hint-icon {
+  color: var(--cr-text-tertiary);
+  flex-shrink: 0;
+}
+
+.cr-user-message-editor__actions {
+  flex-shrink: 0;
+  align-items: center;
+  gap: 8px;
+  display: flex;
+}
+
+.cr-user-message-editor__cancel,
+.cr-user-message-editor__send,
+.cr-user-message-editor__resume {
+  box-sizing: border-box;
+  cursor: pointer;
+  border-radius: 8px;
+  padding: 5px 16px;
+  font-size: 14px;
+  line-height: 20px;
+}
+
+.cr-user-message-editor__cancel:disabled,
+.cr-user-message-editor__send:disabled,
+.cr-user-message-editor__resume:disabled {
+  cursor: not-allowed;
+  opacity: 0.5;
+}
+
+.cr-user-message-editor__cancel,
+.cr-user-message-editor__resume {
+  border: 1px solid var(--cr-border-default);
+  color: var(--cr-text-secondary);
+  background: 0 0;
+  transition: background-color 0.15s, color 0.15s;
+}
+
+.cr-user-message-editor__cancel:not(:disabled):hover,
+.cr-user-message-editor__resume:not(:disabled):hover {
+  background: var(--cr-bg-hover);
+  color: var(--cr-text-primary);
+}
+
+.cr-user-message-editor__send {
+  background: var(--cr-bg-contrast);
+  color: var(--cr-color-on-accent);
+  border: none;
+  justify-content: center;
+  align-items: center;
+  gap: 6px;
+  transition: opacity 0.15s;
+  display: inline-flex;
+}
+
+.cr-user-message-editor__send:not(:disabled):hover {
+  opacity: 0.85;
+}
+
+.cr-user-message-editor__resume {
+  align-self: flex-start;
+  margin-top: 8px;
+}
+
+/* 与输入框共用；此处保留一份，避免编辑器组件依赖其它按需加载的样式表。 */
+@keyframes cr-input-spin {
+  0% {
+    transform: rotate(0);
+  }
+
+  to {
+    transform: rotate(360deg);
+  }
+}

src/renderer/src/workbuddy/message-actions/MessageActionToolbar.tsx

@@ -3,8 +3,8 @@ import type { ChatMessage } from '@shared/types'
 import { CopyMessageIcon, EditMessageIcon } from './RecoveredActionIcons'
 import { SourceThumbsUpIcon, SourceThumbsDownIcon, SourceThumbsUpSolidIcon, SourceThumbsDownSolidIcon, SourceResendIcon, SourceRevertIcon } from './SourceActionIcons'
 import { RuntimeRegenerateIcon } from './RuntimeIcons'
+import { copyUserMessage } from './message-copy'
 import {
-  buildUserMessageClipboard,
   buildCopyMessagePayload,
   getSortedRequestMessages,
   projectSafeMessage,
@@ -77,46 +77,7 @@ export function MessageActionToolbar({
       await navigator.clipboard.writeText(text)
     }
     if (message.role === 'user') {
-      const clipboard = buildUserMessageClipboard(message)
-      if (onCopy) {
-        try {
-          await onCopy(clipboard.plainText, clipboard)
-          return
-        } catch {
-          // Continue through the browser clipboard fallbacks.
-        }
-      }
-      if (typeof document !== 'undefined' && typeof document.execCommand === 'function') {
-        const handler = (event: ClipboardEvent): void => {
-          event.preventDefault()
-          event.clipboardData?.setData('text/plain', clipboard.plainText)
-          event.clipboardData?.setData('text/html', clipboard.html)
-          event.clipboardData?.setData(clipboard.customMimeType, clipboard.customData)
-        }
-        document.addEventListener('copy', handler)
-        let copied = false
-        try {
-          copied = document.execCommand('copy')
-        } catch {
-          copied = false
-        } finally {
-          document.removeEventListener('copy', handler)
-        }
-        if (copied) return
-      }
-      if (typeof ClipboardItem !== 'undefined' && navigator.clipboard?.write) {
-        try {
-          await navigator.clipboard.write([new ClipboardItem({
-            'text/plain': new Blob([clipboard.plainText], { type: 'text/plain' }),
-            'text/html': new Blob([clipboard.html], { type: 'text/html' })
-          })])
-          return
-        } catch {
-          // The plain-text API below is the final supported fallback.
-        }
-      }
-      if (!navigator.clipboard?.writeText) throw new Error('剪贴板不可用')
-      await navigator.clipboard.writeText(clipboard.plainText)
+      await copyUserMessage(message, onCopy)
       return
     }
     const row = requestId && requestMessages ? getSortedRequestMessages(requestMessages, requestId) : []

src/renderer/src/workbuddy/message-actions/UserMessageToolbar.tsx

@@ -0,0 +1,90 @@
+import { useEffect, useRef, useState, type ReactNode } from 'react'
+import type { ChatMessage } from '@shared/types'
+import { CopyMessageIcon, EditMessageIcon } from './RecoveredActionIcons'
+import { RevertToBeforeIcon } from '../conversation/MessageEditorIcons'
+import { sourceConversationLabel } from '../conversation/source-labels'
+import { formatMessageTime } from '../../components/AssistantMessageDetails'
+import { RecoveredSelectTooltip } from '../../components/source-select/RecoveredSelectTooltip'
+import { copyUserMessage, type MessageCopyWriter } from './message-copy'
+
+/**
+ * 原版 IconButton 用 Tooltip$1（content / placement=bottom / showArrow / hideOnClick）。
+ * 回收实现由 JSX 推导属性，这里显式声明用到的子集。
+ */
+type RecoveredTooltipProps = {
+  content: string
+  children: React.ReactElement
+  placement?: 'top' | 'bottom' | 'left' | 'right'
+  hideOnClick?: boolean
+  showArrow?: boolean
+}
+const RecoveredTooltip = RecoveredSelectTooltip as unknown as (props: RecoveredTooltipProps) => React.JSX.Element
+
+export interface UserMessageToolbarProps {
+  message: ChatMessage
+  /** 会话忙时禁止进入编辑（原版 A = resend || canHandle('message.edit.submit')）。 */
+  canEdit?: boolean
+  onEdit?(message: ChatMessage): void | Promise<void>
+  onCopy?: MessageCopyWriter
+  onRevert?(message: ChatMessage): void | Promise<void>
+  revertDisabled?: boolean
+}
+
+/**
+ * 用户消息悬停工具条。
+ * 结构与内容来自 WorkBuddy 5.8.3 渲染器 ToolbarRenderer（REA 回收 .tmp/wb-src-DbE1_mgM.js）：
+ * `div.cr-toolbar[data-message-id][role=toolbar]` + `span.cr-toolbar__time` + 图标按钮（复制/恢复/编辑）。
+ * 几何与配色证据：ev_245ea1740cde21869500348e47cf9663a1ea72943ccfe79c163a6838a153bfd3、
+ * ev_ee345b160e5f520ed866c1059b7c72e77b34e49bf1ce407cd266ea886aa86405。
+ */
+export function UserMessageToolbar({ message, canEdit = false, onEdit, onCopy, onRevert, revertDisabled = false }: UserMessageToolbarProps): React.JSX.Element | null {
+  const [copied, setCopied] = useState(false)
+  const [error, setError] = useState<string | null>(null)
+  const timerRef = useRef<ReturnType<typeof setTimeout> | null>(null)
+
+  useEffect(() => () => {
+    if (timerRef.current) clearTimeout(timerRef.current)
+  }, [])
+
+  const time = formatMessageTime(message.createdAt)
+  if (!time && !onEdit && !onRevert) return null
+
+  const copy = async (): Promise<void> => {
+    setError(null)
+    try {
+      await copyUserMessage(message, onCopy)
+      setCopied(true)
+      if (timerRef.current) clearTimeout(timerRef.current)
+      timerRef.current = setTimeout(() => setCopied(false), 2000)
+    } catch (reason) {
+      setError(reason instanceof Error ? reason.message : String(reason))
+    }
+  }
+
+  const iconButton = (action: string, label: string, icon: ReactNode, onClick: () => void, options: { disabled?: boolean; hideTooltipOnClick?: boolean } = {}): React.JSX.Element => (
+    <RecoveredTooltip content={label} placement="bottom" hideOnClick={options.hideTooltipOnClick ?? true}>
+      <button
+        type="button"
+        className="cr-icon-button"
+        data-action={action}
+        aria-label={label}
+        disabled={options.disabled}
+        onClick={onClick}
+      >
+        {icon}
+      </button>
+    </RecoveredTooltip>
+  )
+
+  return (
+    <div className="cr-toolbar" data-message-id={message.id} role="toolbar">
+      {time ? <span className="cr-toolbar__time">{time}</span> : null}
+      {iconButton('copy', sourceConversationLabel(copied ? 'markdown.copied' : 'markdown.copy'), <CopyMessageIcon className="cr-icon-button__icon" />, () => void copy(), { hideTooltipOnClick: false })}
+      {onRevert ? iconButton('revert', sourceConversationLabel('userMessage.action.revert'), <RevertToBeforeIcon className="cr-icon-button__icon" />, () => void onRevert(message), { disabled: revertDisabled }) : null}
+      {canEdit && onEdit ? iconButton('edit', sourceConversationLabel('userMessage.action.edit'), <EditMessageIcon className="cr-icon-button__icon" />, () => void onEdit(message)) : null}
+      {error ? <span className="wb-message-actions__error" role="alert">{error}</span> : null}
+    </div>
+  )
+}
+
+export default UserMessageToolbar

src/renderer/src/workbuddy/message-actions/message-copy.ts

@@ -0,0 +1,52 @@
+import type { ChatMessage } from '@shared/types'
+import { buildUserMessageClipboard } from './project-safe-message'
+
+export type MessageCopyWriter = (text: string, payload: unknown) => void | Promise<void>
+
+/**
+ * 复制用户消息：优先交给宿主 onCopy，随后按浏览器剪贴板能力逐级回退。
+ * 逻辑来自原版工具栏的 copy 分支（YCode MessageActionToolbar.copy），抽成共享实现，
+ * 供旧工具条与新用户消息工具条共用。
+ */
+export async function copyUserMessage(message: ChatMessage, onCopy?: MessageCopyWriter): Promise<void> {
+  const clipboard = buildUserMessageClipboard(message)
+  if (onCopy) {
+    try {
+      await onCopy(clipboard.plainText, clipboard)
+      return
+    } catch {
+      // Continue through the browser clipboard fallbacks.
+    }
+  }
+  if (typeof document !== 'undefined' && typeof document.execCommand === 'function') {
+    const handler = (event: ClipboardEvent): void => {
+      event.preventDefault()
+      event.clipboardData?.setData('text/plain', clipboard.plainText)
+      event.clipboardData?.setData('text/html', clipboard.html)
+      event.clipboardData?.setData(clipboard.customMimeType, clipboard.customData)
+    }
+    document.addEventListener('copy', handler)
+    let copied = false
+    try {
+      copied = document.execCommand('copy')
+    } catch {
+      copied = false
+    } finally {
+      document.removeEventListener('copy', handler)
+    }
+    if (copied) return
+  }
+  if (typeof ClipboardItem !== 'undefined' && navigator.clipboard?.write) {
+    try {
+      await navigator.clipboard.write([new ClipboardItem({
+        'text/plain': new Blob([clipboard.plainText], { type: 'text/plain' }),
+        'text/html': new Blob([clipboard.html], { type: 'text/html' })
+      })])
+      return
+    } catch {
+      // The plain-text API below is the final supported fallback.
+    }
+  }
+  if (!navigator.clipboard?.writeText) throw new Error('剪贴板不可用')
+  await navigator.clipboard.writeText(clipboard.plainText)
+}