fix(knowledge): keep computer upload and place creation below it

tests/unit/cloud-knowledge-status.test.tsx

@@ -33,6 +33,7 @@ async function tick() { await act(async () => { await vi.advanceTimersByTimeAsyn
 it('uploads then processes automatically and refreshes through queue, parse, index and readiness', async () => {
   await open();
   await screen.findByText('上传第一份文档，让智能体用你的资料回答。');
+  expect(screen.queryByRole('button', { name: '从聊天选择文件' })).not.toBeInTheDocument();
   vi.useFakeTimers();
   api.uploadKnowledge.mockImplementation(async () => { items = [file]; return file; });
   await act(async () => { fireEvent.click(screen.getByRole('button', { name: '从电脑上传', exact: true })); });
@@ -48,6 +49,7 @@ it('uploads then processes automatically and refreshes through queue, parse, ind
   expect(screen.getByText('可用于回答')).toBeVisible();
   expect(screen.getByText(/12 段可检索内容/)).toBeVisible();
   expect(api.uploadKnowledge).toHaveBeenCalledTimes(1);
+  expect(api.call.mock.calls.some(([operation]) => ['threads', 'attachments', 'importKnowledgeAttachment'].includes(operation))).toBe(false);
 });
 
 it('does not call zero chunks searchable and distinguishes loading from an empty library', async () => {
@@ -162,23 +164,6 @@ it('keeps all loaded pages refreshing and ignores a late response from the previ
   expect(screen.getByText('上传第一份文档，让智能体用你的资料回答。')).toBeVisible();
 });
 
-it('imports an attachment and processes it without claiming immediate readiness', async () => {
-  const original = api.call.getMockImplementation()!;
-  api.call.mockImplementation(async (operation, input) => {
-    if (operation === 'threads') return { threads: [{ thread_id: 'thread', title: '我的对话' }], next_offset: null };
-    if (operation === 'attachments') return { attachments: [{ file_id: 'attachment', file_name: '附件.pdf' }] };
-    if (operation === 'importKnowledgeAttachment') { items = [file]; return file; }
-    return original(operation, input);
-  });
-  await open();
-  fireEvent.click(screen.getByRole('button', { name: '从聊天选择文件' }));
-  fireEvent.click(await screen.findByRole('button', { name: '选择对话 我的对话' }));
-  fireEvent.click(await screen.findByRole('checkbox', { name: '选择文件 附件.pdf' }));
-  fireEvent.click(screen.getByRole('button', { name: '导入 1 个文件' }));
-  await screen.findByText('等待处理');
-  expect(screen.queryByText('可用于回答')).not.toBeInTheDocument();
-});
-
 it('keeps indexed content available when replacement cleanup fails and permits retry', async () => {
   items = [{ ...file, status: 'indexed', chunk_count: 4, available: true, replaces_file_id: 'old',
     processing_task: { task_id: 'task', status: 'failed', error: '旧文档清理失败' } }];