refactor(desktop): rebuild the task rail on one shape and one vocabulary

apps/desktop/e2e/composer-skill-invocation.spec.ts

@@ -30,7 +30,7 @@ test('staged Skills come back as chips after leaving and returning', async ({
   await expect(workspaceChip).toContainText('Workspace Only');
 
   await page.getByRole('button', { name: '展开侧边栏' }).click();
-  const sidebar = page.getByRole('navigation', { name: '对话列表' });
+  const sidebar = page.getByRole('navigation', { name: '任务列表' });
   await sidebar.getByRole('button', { name: '新任务', exact: true }).click();
   await expect(composer).toHaveText('');
 

apps/desktop/e2e/session-workbar.spec.ts

@@ -8,7 +8,7 @@ async function openGitChanges(page: Page) {
   await composer.fill('create review session');
   await composer.press('Enter');
   await expect(page.getByText(/Fake backend received: create review session/)).toBeVisible();
-  await page.getByRole('button', { name: '展开会话工作栏' }).click();
+  await page.getByRole('button', { name: '展开任务工作栏' }).click();
   await expect(page.getByRole('list', { name: '打开工具' })).toBeVisible();
   await page.getByRole('button', { name: /变更.*查看当前 Git 工作区变化/ }).click();
   return page.getByRole('region', { name: 'Git 变更' });
@@ -20,14 +20,14 @@ test('titlebar workbar action restores an existing tool instead of the picker',
   const page = gitReviewWindow.page;
   const workspaceActions = page.getByRole('toolbar', { name: '工作区辅助操作' });
   const panel = await openGitChanges(page);
-  await expect(workspaceActions.getByRole('button', { name: '收起会话工作栏' })).toBeVisible();
+  await expect(workspaceActions.getByRole('button', { name: '收起任务工作栏' })).toBeVisible();
   await expect(workspaceActions.getByRole('button', { name: '打开工作栏工具' })).toHaveCount(0);
   await page.getByRole('button', { name: '打开工作栏标签' }).click();
   const picker = page.getByRole('list', { name: '打开工具' });
   await expect(picker).toBeVisible();
 
-  await workspaceActions.getByRole('button', { name: '收起会话工作栏' }).click();
-  await workspaceActions.getByRole('button', { name: '展开会话工作栏' }).click();
+  await workspaceActions.getByRole('button', { name: '收起任务工作栏' }).click();
+  await workspaceActions.getByRole('button', { name: '展开任务工作栏' }).click();
 
   await expect(panel).toBeVisible();
   await expect(picker).not.toBeVisible();

apps/desktop/e2e/settings.spec.ts

@@ -8,8 +8,8 @@ test('opening settings commits an active titlebar rename', async ({ window: page
   const identity = page.locator('[data-maka-contract="titlebar-identity"]');
   await expect(identity).toBeVisible();
   await page.getByRole('button', { name: '展开侧边栏' }).click();
-  await identity.getByRole('button', { name: /重命名对话/ }).click();
-  await page.getByRole('textbox', { name: '重命名对话' }).fill('renamed before settings');
+  await identity.getByRole('button', { name: /重命名任务/ }).click();
+  await page.getByRole('textbox', { name: '重命名任务' }).fill('renamed before settings');
 
   // Programmatic activation preserves input focus, matching the macOS
   // application-menu command that opens Settings before Chromium can blur it.

apps/desktop/e2e/sidebar-project-row.spec.ts

@@ -10,7 +10,7 @@ test('project navigation and actions remain adjacent keyboard controls', async (
   await page.keyboard.press('Escape');
   await expect(page.locator('[data-maka-contract="search-modal"]')).not.toBeVisible();
 
-  const sidebar = page.getByRole('navigation', { name: '对话列表' });
+  const sidebar = page.getByRole('navigation', { name: '任务列表' });
   await sidebar.getByRole('radio', { name: '按项目', exact: true }).click();
 
   const projectRow = sidebar.locator(

apps/desktop/e2e/streaming-remount.spec.ts

@@ -18,11 +18,20 @@ test('remounting a live surface leaves accumulated output settled', async ({
   const liveBubble = page.locator('.maka-bubble-streaming');
   await expect(liveBubble).toContainText(accumulatedOutput);
 
-  const sidebar = page.getByRole('navigation', { name: '对话列表' });
+  const sidebar = page.getByRole('navigation', { name: '任务列表' });
   await sidebar.getByRole('button', { name: '扩展' }).click();
   await expect(page.locator('[data-module="skills"]')).toBeVisible();
   await expect(liveBubble).toHaveCount(0);
-  await sidebar.getByRole('button', { name: '会话', exact: true }).click();
+  // Back the way the product actually offers: the rail is collapsed here, so
+  // the task rows are not rendered and there is no 任务 row to press (#2984).
+  // Widening it is the titlebar's job, and the task left behind is still
+  // `activeId`, so it comes back marked and one click away.
+  await page.getByRole('button', { name: '展开侧边栏' }).click();
+  const currentTaskRow = sidebar.locator(
+    '[data-maka-contract="session-row"] [aria-current="page"]',
+  );
+  await expect(currentTaskRow).toHaveCount(1);
+  await currentTaskRow.click();
   await expect(liveBubble).toHaveCount(1);
   await expect(liveBubble).toContainText(accumulatedOutput);
 
@@ -75,7 +84,7 @@ test('returning to a live conversation settles output accumulated while away', a
   const liveBubble = page.locator('.maka-bubble-streaming');
   await expect(liveBubble).toContainText(accumulatedOutput);
 
-  const sidebar = page.getByRole('navigation', { name: '对话列表' });
+  const sidebar = page.getByRole('navigation', { name: '任务列表' });
   await page.getByRole('button', { name: '展开侧边栏' }).click();
   await expect(page.locator('[data-agents-page]')).toHaveAttribute(
     'data-sidebar-state',

apps/desktop/src/main/__tests__/app-shell-session-purge.test.ts

@@ -11,7 +11,7 @@ function summary(id: string, overrides: Partial<SessionSummary> = {}): SessionSu
     isArchived: true,
     labels: [],
     hasUnread: false,
-    status: 'done',
+    status: 'archived',
     backend: 'fake',
     llmConnectionSlug: 'test',
     connectionLocked: true,
@@ -21,6 +21,16 @@ function summary(id: string, overrides: Partial<SessionSummary> = {}): SessionSu
   };
 }
 
+/**
+ * A task that left the archive. Both fields move together because that is what
+ * `SessionStore.unarchive` writes; flipping only `isArchived` would build a row
+ * the store cannot produce, and the sweep would then be tested against a state
+ * it will never meet.
+ */
+function restored(id: string): SessionSummary {
+  return summary(id, { isArchived: false, status: 'active' });
+}
+
 type SweepHarness = {
   removed: string[];
   cleared: string[];
@@ -128,7 +138,7 @@ describe('purgeSessions', () => {
     // dialog was up has left it, and a sweep that deleted it anyway would be
     // acting outside what was agreed to.
     const h = harness();
-    const sessions = [summary('kept', { isArchived: false }), summary('doomed')];
+    const sessions = [restored('kept'), summary('doomed')];
     const restore = installWindow(h);
     const actions = createActions({ harness: h, sessions, activeIdRef: { current: undefined } });
 
@@ -148,7 +158,7 @@ describe('purgeSessions', () => {
     const sessions = [summary('first'), summary('second')];
     const restore = installWindow(h, {
       onRemove: (id) => {
-        if (id === 'first') sessions[1] = summary('second', { isArchived: false });
+        if (id === 'first') sessions[1] = restored('second');
       },
     });
     const actions = createActions({ harness: h, sessions, activeIdRef: { current: undefined } });

apps/desktop/src/main/__tests__/app-shell-session-settings-actions.test.ts

@@ -167,7 +167,7 @@ describe('AppShell session settings actions', () => {
 
     assert.deepEqual(harness.successes, [
       {
-        title: '已切换当前会话模型',
+        title: '已切换当前任务模型',
         description: 'claude-haiku → claude-opus',
       },
     ]);

apps/desktop/src/main/__tests__/bot-incoming-project-cwd.test.ts

@@ -42,7 +42,7 @@ describe('bot incoming new-session cwd', () => {
     } as unknown as BotIncomingMessage);
 
     assert.deepEqual(createInput, {
-      name: 'Telegram 对话',
+      name: 'Telegram 任务',
       labels: ['bot', 'telegram'],
     });
   });

apps/desktop/src/main/__tests__/runtime-host-external-sessions-ipc-main.test.ts

@@ -59,7 +59,7 @@ test('forwards bounded external Session requests and publishes imported Sessions
   assert.deepEqual(events, [{ reason: 'created', sessionId: 'imported-1' }]);
 });
 
-test('preserves commit uncertainty as a structured non-retryable IPC result', async () => {
+test('an uncertain commit still asks the shell to re-read the catalog', async () => {
   const events: unknown[] = [];
   const ipc = ipcHarness();
   registerRuntimeHostExternalSessionsIpc(
@@ -85,7 +85,12 @@ test('preserves commit uncertainty as a structured non-retryable IPC result', as
     }),
     { ok: false, reason: 'commit_outcome_unknown' },
   );
-  assert.deepEqual(events, []);
+  // The task may be in the catalog, so the shell has to look. The import page's
+  // own banner cannot be the only trace: 导入任务 is a Settings page, and the
+  // moment the user leaves it the banner is unmounted -- which is exactly when
+  // they come back and import the same conversation again. No id, because not
+  // knowing which task landed is what `commit_outcome_unknown` means.
+  assert.deepEqual(events, [{ reason: 'created', sessionId: undefined }]);
 });
 
 test('rejects malformed renderer requests before they reach the Host client', async () => {

apps/desktop/src/main/__tests__/thread-search.test.ts

@@ -215,7 +215,7 @@ describe('runThreadSearch', () => {
       await runThreadSearch({ source: 'thread', query: 'roadmap', limit: 5 }, makeDeps(entries)),
     )[0]!;
     assert.deepEqual(titleHit.target, { kind: 'thread', sessionId: 's1' });
-    assert.equal(titleHit.summary, '会话标题');
+    assert.equal(titleHit.summary, '任务标题');
     assert.equal(titleHit.url, undefined);
     assert.match(titleHit.snippet ?? '', /\[redacted\]/);
     assert.equal(titleHit.snippet?.includes('sk-ant-test-secret-token-12345'), false);

apps/desktop/src/main/bot-incoming-main.ts

@@ -183,15 +183,15 @@ export function createBotIncomingMainService(deps: BotIncomingMainServiceDeps):
     noticeTtlMs: number,
   ): Promise<string | undefined> {
     if (botConversationSessions.size >= BOT_CONVERSATION_SESSION_LIMIT) {
-      await sendTransientBotNotice(message, 'Maka 当前机器人会话数量已达上限，请重置或清理旧会话后再试。', noticeTtlMs);
+      await sendTransientBotNotice(message, 'Maka 当前机器人任务数量已达上限，请重置或清理旧任务后再试。', noticeTtlMs);
       return undefined;
     }
     if (!consumeBotConversationToken(conversationKey)) {
       await sendTransientBotNotice(message, 'Maka 收到的机器人消息过于频繁，请稍后再试。', noticeTtlMs);
       return undefined;
     }
     const sessionId = await deps.sessions.createSession({
-      name: `${botDisplayLabel(message.platform)} 对话`,
+      name: `${botDisplayLabel(message.platform)} 任务`,
       labels: ['bot', message.platform],
     });
     botConversationSessions.set(conversationKey, sessionId);
@@ -240,8 +240,8 @@ export function createBotIncomingMainService(deps: BotIncomingMainServiceDeps):
         ephemeralTtlMs: SYSTEM_NOTICE_TTL_MS,
       };
       const ack = had
-        ? '会话已重置，下一条消息会开新对话。'
-        : '当前没有进行中的对话；下一条消息会开新对话。';
+        ? '任务已重置，下一条消息会开新任务。'
+        : '当前没有进行中的任务；下一条消息会开新任务。';
       await deps.botRegistry.sendMessage(message.platform, message.chatId, ack, replyOptions).catch(() => null);
       return;
     }
@@ -396,7 +396,7 @@ export function createBotIncomingMainService(deps: BotIncomingMainServiceDeps):
     if ((await deps.sessions.prepareSession(sessionId)) === 'ready') return true;
     await sendTransientBotNotice(
       message,
-      'Maka 已拒绝这条机器人消息：绑定会话当前不是只读探索模式，请先在桌面端切回 explore 后再试。',
+      'Maka 已拒绝这条机器人消息：绑定任务当前不是只读探索模式，请先在桌面端切回 explore 后再试。',
       noticeTtlMs,
     );
     return false;

apps/desktop/src/main/capability-snapshot.ts

@@ -61,7 +61,7 @@ export function buildCapabilitySnapshotCollection(input: {
       feature: {
         state: 'partial',
         source: 'runtime',
-        reason: 'Daily Review 已聚合本地会话 / 工具 / 模型活动；当前不包含屏幕与应用级录制',
+        reason: 'Daily Review 已聚合本地任务 / 工具 / 模型活动；当前不包含屏幕与应用级录制',
       },
       requiredPermissions: [
         { id: 'screen_recording', required: false, status: permissions.screen_recording.status },

apps/desktop/src/main/chat-readiness.ts

@@ -106,6 +106,16 @@ export async function requireReadyConnection(
  * so the copy stays close to its existing semantics (PR110a refactor
  * is behavior-preserving — only the judgment moved to core).
  */
+/**
+ * Two paths reach `fake_backend`: the reason table below, and the header check
+ * in `assertSessionCanSend`, which never gets far enough to look a connection
+ * up. They are the same sentence to the user, so they are the same string here
+ * — the rename that moved 会话 to 任务 had to be applied twice, which is what a
+ * second copy costs.
+ */
+const FAKE_BACKEND_MESSAGE =
+  '当前任务来自旧的本地模拟连接，不能直接发送。请到 设置 · 模型 添加真实模型后新建任务。';
+
 function messageForReason(
   reason: ChatConfigurationReason,
   connection: LlmConnection,
@@ -132,7 +142,7 @@ function messageForReason(
       return `模型 "${model}" 不能用于聊天。请到 设置 · 模型 选择支持聊天的模型。`;
     }
     case 'fake_backend':
-      return '当前会话来自旧的本地模拟连接，不能直接发送。请到 设置 · 模型 添加真实模型后新建会话。';
+      return FAKE_BACKEND_MESSAGE;
     case 'missing_default_connection':
     case 'connection_missing':
       // These reasons are handled before we reach isConnectionReady,
@@ -146,10 +156,7 @@ export async function assertSessionCanSend(
   deps: ReadyConnectionDeps,
 ): Promise<void> {
   if (header.backend === 'fake') {
-    throw chatConfigurationError(
-      '当前会话来自旧的本地模拟连接，不能直接发送。请到 设置 · 模型 添加真实模型后新建会话。',
-      'fake_backend',
-    );
+    throw chatConfigurationError(FAKE_BACKEND_MESSAGE, 'fake_backend');
   }
   await requireReadyConnection(header.llmConnectionSlug, deps, header.model);
 }

apps/desktop/src/main/computer-use/status-item.ts

@@ -114,7 +114,7 @@ const COPY: UiCatalog<StatusItemCopy> = {
   zh: {
     stopUsing: (appName) => `停止操作 ${appName}`,
     stopUnnamed: '停止 Computer Use',
-    empty: '没有正在进行的会话',
+    empty: '没有正在进行的任务',
   },
   en: {
     stopUsing: (appName) => `Stop Using ${appName}`,

apps/desktop/src/main/e2e-fixture/scenarios-sessions.ts

@@ -17,7 +17,7 @@ export function longSidebarSessions(
     return {
       header: header({
         id: sessionId,
-        name: `会话 ${suffix}`,
+        name: `任务 ${suffix}`,
         connection: 'zai-live',
         model: 'glm-5.1',
         now,

apps/desktop/src/main/e2e-fixture/scenarios-settings.ts

@@ -183,7 +183,7 @@ export async function writeScheduledTasks(workspaceRoot: string, now: number): P
     for (const [index, title] of [
       '每日站会前汇总阻塞项',
       '每月依赖许可证审计',
-      '季度收尾清点未归档会话',
+      '季度收尾清点未归档任务',
       '发布前跑一轮回归',
     ].entries()) {
       await create(

apps/desktop/src/main/notifications-policy.ts

@@ -58,7 +58,7 @@ export interface RunNotificationCopy {
  */
 function runNotificationCopy(kind: RunNotificationKind): RunNotificationCopy {
   if (kind === 'errored') {
-    return { title: '对话出错', body: '本轮回答未能完成，点击查看详情。' };
+    return { title: '任务出错', body: '本轮回答未能完成，点击查看详情。' };
   }
   return { title: '回答已生成', body: 'Maka 已完成本轮回答，点击查看。' };
 }

apps/desktop/src/main/runtime-host-external-sessions-ipc-main.ts

@@ -68,6 +68,13 @@ export function registerRuntimeHostExternalSessionsIpc(
         error.operation === 'external-session.import' &&
         error.code === 'commit_outcome_unknown'
       ) {
+        // "Unknown" means the task may well be in the catalog, so tell the
+        // shell to read it again. Without this, the only trace of a maybe-
+        // committed import is the banner on the page, and the page is gone the
+        // moment the user leaves Settings -- which is exactly when they come
+        // back and import the same conversation a second time. No id: the
+        // whole point is that we do not know which task, if any, landed.
+        deps.emitSessionsChanged('created');
         return {
           ok: false,
           reason: 'commit_outcome_unknown',

apps/desktop/src/main/search/thread-search.ts

@@ -202,7 +202,7 @@ export async function runThreadSearch(
       results.push({
         source: THREAD_SOURCE,
         title: session.name,
-        summary: '会话标题',
+        summary: '任务标题',
         snippet,
         target: {
           kind: 'thread',

apps/desktop/src/preload/preload.ts

@@ -421,7 +421,7 @@ function executeWebSearchQuery(input: {
     return Promise.resolve({
       ok: false,
       reason: 'unsupported_provider',
-      message: '原生联网搜索由对话中的主模型请求执行，不支持从设置页单独调用。',
+      message: '原生联网搜索由任务中的主模型请求执行，不支持从设置页单独调用。',
     });
   }
   const query = normalizeWebSearchQuery(input.query);
@@ -448,7 +448,7 @@ function executeWebSearchTest(input: {
     return Promise.resolve({
       ok: false,
       reason: 'unsupported_provider',
-      message: '原生联网搜索由对话中的主模型请求执行，不需要单独测试搜索凭据。',
+      message: '原生联网搜索由任务中的主模型请求执行，不需要单独测试搜索凭据。',
     });
   }
   const apiKey = webSearchCredentialOverride(input.apiKey);

apps/desktop/src/renderer/agent-graph-panel.tsx

@@ -53,7 +53,7 @@ export function getAgentGraphPanelCopy(locale: UiLocale): GraphPanelCopy {
       stopping: '停止中…',
       stopFailed: '停止 Graph 失败，请重试。',
       loadFailed: 'Graph 状态刷新失败。',
-      openSession: '打开子会话',
+      openSession: '打开子任务',
       operators: 'Operators',
       selectedResults: '已选择结果',
       noOperators: '等待主 Agent 创建 operator…',
@@ -96,7 +96,7 @@ export function getAgentGraphPanelCopy(locale: UiLocale): GraphPanelCopy {
     stopping: 'Stopping…',
     stopFailed: 'Could not stop the graph. Try again.',
     loadFailed: 'Could not refresh graph state.',
-    openSession: 'Open child session',
+    openSession: 'Open child task',
     operators: 'Operators',
     selectedResults: 'Selected results',
     noOperators: 'Waiting for the main agent to create an operator…',

apps/desktop/src/renderer/app-shell-chat-actions.ts

@@ -386,7 +386,7 @@ export function createAppShellChatActions(deps: {
           showSkillInvocationFeedback(uiLocale, toastApi, sendResult.skillInvocation);
         }
         if (newChatOwner && isNewChatSendSurfaceActive(newChatOwner)) {
-          setNavSelection({ section: 'sessions', filter: 'chats' });
+          setNavSelection({ section: 'sessions' });
           setActiveId(session.id);
           showOptimisticUserMessage(
             session.id,