fix(coding): restore sending after queued messages settle

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

@@ -1169,6 +1169,67 @@ describe('CodingChatPanel first Conversation', () => {
     expect(conversationApi.recover).not.toHaveBeenCalled();
   });
 
+  it.each([
+    ['follow-up', 'completed'],
+    ['follow-up', 'aborted'],
+    ['steer', 'completed'],
+    ['steer', 'aborted'],
+  ] as const)('sends again after %s and %s settlement', async (mode, terminalReason) => {
+    projectApi.list.mockResolvedValue({ projects: [project], activeProjectId: project.id });
+    projectApi.config.mockResolvedValue({ project, config });
+    projectApi.conversations.mockResolvedValue([conversation]);
+    conversationApi.events.mockResolvedValue(new FakeEventSource() as unknown as EventSource);
+    conversationApi.submit.mockImplementation(async (input) => ({
+      accepted: true,
+      conversationId: input.conversationId,
+      clientRequestId: input.clientRequestId,
+      runId: 'run-1',
+      mode: input.mode,
+    }));
+    const { CodingChatPanel } = await import('@/pages/Chat/CodingChatPanel');
+    const { createLocalConversationSnapshot } = await import('@/pages/Chat/coding-chat-snapshot');
+    const { codingConversationStore } = await import('@/stores/coding-conversations');
+    const runningSnapshot: ConversationSnapshot = {
+      ...createLocalConversationSnapshot(project.id, conversation),
+      worker: { status: 'ready', generation: 1 },
+      run: { status: 'running', runId: 'run-1', mode: 'prompt' },
+      cursor: { workerGeneration: 1, seq: 1 },
+    };
+    conversationApi.snapshot.mockResolvedValue(runningSnapshot);
+    render(<CodingChatPanel />);
+    const textbox = await screen.findByRole('textbox');
+    await screen.findByRole('button', { name: '中止生成' });
+    fireEvent.change(textbox, { target: { value: '排队的消息' } });
+    fireEvent.change(screen.getByRole('combobox', { name: '消息发送方式' }), {
+      target: { value: mode },
+    });
+    fireEvent.click(screen.getByRole('button', { name: '发送' }));
+    await waitFor(() => expect(conversationApi.submit).toHaveBeenCalledOnce());
+    await waitFor(() => expect(screen.getByTestId('coding-file-attachment-input')).toBeEnabled());
+
+    act(() => codingConversationStore.getState().applySnapshotEvent({
+      type: 'snapshot',
+      conversationId: conversation.id,
+      workerGeneration: 1,
+      seq: 2,
+      snapshot: {
+        ...runningSnapshot,
+        cursor: { workerGeneration: 1, seq: 2 },
+        run: { status: 'idle', runId: 'run-1', mode: 'prompt', terminalReason, settledAt: 2_000 },
+      },
+    }));
+    fireEvent.change(textbox, { target: { value: '继续' } });
+    expect(screen.getByRole('button', { name: '发送' })).toBeEnabled();
+    expect(screen.queryByText(/条消息已被本地 Agent 接收/)).not.toBeInTheDocument();
+    fireEvent.keyDown(textbox, { key: 'Enter', code: 'Enter' });
+    await waitFor(() => expect(conversationApi.submit).toHaveBeenCalledTimes(2));
+    expect(conversationApi.submit).toHaveBeenLastCalledWith(expect.objectContaining({
+      conversationId: conversation.id,
+      mode: 'prompt',
+      text: '继续',
+    }));
+  });
+
   it('shows the 202 acceptance and preserves Enter versus Shift+Enter behavior', async () => {
     const { CodingComposer } = await import('@/pages/Chat/CodingComposer');
     const onSubmit = vi.fn();