feat(coding): add conversation archive and first-message titles

tests/unit/coding-chat-panel.test.tsx

@@ -205,6 +205,60 @@ describe('CodingChatPanel first Conversation', () => {
     vi.resetModules();
   });
 
+  it('archives the last conversation without creating another, then restores the same running conversation', async () => {
+    projectApi.list.mockResolvedValue({ projects: [project], activeProjectId: project.id });
+    projectApi.config.mockResolvedValue({ project, config });
+    projectApi.conversations.mockResolvedValue([conversation]);
+    projectApi.patch.mockImplementation(async (_id, patch) => ({
+      ...conversation, archivedAt: patch.archived ? '2026-09-20T00:00:00Z' : null,
+    }));
+    conversationApi.events.mockResolvedValue(new FakeEventSource() as unknown as EventSource);
+    const { createLocalConversationSnapshot } = await import('@/pages/Chat/coding-chat-snapshot');
+    conversationApi.snapshot.mockResolvedValue({ ...createLocalConversationSnapshot(project.id, conversation),
+      run: { status: 'running', runId: 'run-1' } });
+    const { CodingChatPanel } = await import('@/pages/Chat/CodingChatPanel');
+    const { codingConversationStore } = await import('@/stores/coding-conversations');
+    render(<CodingChatPanel />);
+    const menu = await screen.findByRole('button', { name: '对话操作：新对话' });
+    await waitFor(() => expect(codingConversationStore.getState().selectedConversationId).toBe(conversation.id));
+    fireEvent.keyDown(menu, { key: 'Enter' });
+    fireEvent.click(await screen.findByRole('menuitem', { name: '归档（任务继续运行）' }));
+    await screen.findByText('没有最近会话，可新建对话或查看归档');
+    expect(projectApi.create).not.toHaveBeenCalled();
+    expect(conversationApi.abort).not.toHaveBeenCalled();
+    fireEvent.click(screen.getByRole('button', { name: '已归档（1）' }));
+    fireEvent.click(within(screen.getByTestId('coding-conversation-sidebar')).getByRole('button', { name: '新对话', exact: true }));
+    await screen.findByText('此对话已归档，任务仍在运行。');
+    expect(screen.queryByRole('button', { name: '发送', exact: true })).not.toBeInTheDocument();
+    fireEvent.click(screen.getByRole('button', { name: '恢复对话' }));
+    await waitFor(() => expect(screen.queryByRole('button', { name: '恢复对话' })).not.toBeInTheDocument());
+    expect(codingConversationStore.getState().selectedConversationId).toBe(conversation.id);
+    expect(projectApi.patch).toHaveBeenLastCalledWith(conversation.id, { archived: false });
+  });
+
+  it('renames an unselected conversation from its menu without preparing that conversation', async () => {
+    const other = { ...conversation, id: 'unselected', title: '旧标题', updatedAt: '2025-01-01T00:00:00Z' };
+    projectApi.list.mockResolvedValue({ projects: [project], activeProjectId: project.id });
+    projectApi.config.mockResolvedValue({ project, config });
+    projectApi.conversations.mockResolvedValue([conversation, other]);
+    projectApi.patch.mockImplementation(async (_id, patch) => ({ ...other, ...patch }));
+    conversationApi.events.mockResolvedValue(new FakeEventSource() as unknown as EventSource);
+    const { createLocalConversationSnapshot } = await import('@/pages/Chat/coding-chat-snapshot');
+    conversationApi.snapshot.mockResolvedValue(createLocalConversationSnapshot(project.id, conversation));
+    const { CodingChatPanel } = await import('@/pages/Chat/CodingChatPanel');
+    render(<CodingChatPanel />);
+    fireEvent.keyDown(await screen.findByRole('button', { name: '对话操作：旧标题' }), { key: 'Enter' });
+    fireEvent.click(await screen.findByRole('menuitem', { name: '重命名' }));
+    const input = screen.getByRole('textbox', { name: '对话标题' });
+    expect(input).toHaveValue('旧标题');
+    expect(input).toHaveAttribute('maxlength', '200');
+    fireEvent.change(input, { target: { value: '  手动新标题  ' } });
+    fireEvent.submit(input.closest('form')!);
+    await waitFor(() => expect(screen.queryByRole('dialog')).not.toBeInTheDocument());
+    expect(projectApi.patch).toHaveBeenCalledWith(other.id, { title: '手动新标题' });
+    expect(conversationApi.snapshot).not.toHaveBeenCalledWith(other.id);
+  });
+
   it('keeps a project with no Agent accessible and offers optional Agent setup', async () => {
     const openProjectSettings = vi.fn();
     projectApi.list.mockResolvedValue({ projects: [project], activeProjectId: project.id });