fix(coding): reconcile snapshot after abort

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

@@ -695,6 +695,45 @@ describe('CodingChatPanel first Conversation', () => {
     expect(screen.getByRole('button', { name: '发送' })).toBeEnabled();
   });
 
+  it('refreshes the authoritative Snapshot after abort when the terminal SSE patch was missed', async () => {
+    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.recover.mockResolvedValue(undefined);
+    conversationApi.abort.mockResolvedValue(undefined);
+    const { CodingChatPanel } = await import('@/pages/Chat/CodingChatPanel');
+    const { createLocalConversationSnapshot } = await import('@/pages/Chat/coding-chat-snapshot');
+    const runningSnapshot: ConversationSnapshot = {
+      ...createLocalConversationSnapshot(project.id, conversation),
+      worker: { status: 'ready', generation: 1 },
+      run: { status: 'running', runId: 'run-stale', mode: 'prompt' },
+      cursor: { workerGeneration: 1, seq: 7 },
+    };
+    const settledSnapshot: ConversationSnapshot = {
+      ...runningSnapshot,
+      run: {
+        status: 'idle',
+        runId: 'run-stale',
+        mode: 'prompt',
+        settledAt: 12_000,
+        terminalReason: 'completed',
+      },
+      cursor: { workerGeneration: 1, seq: 8 },
+    };
+    conversationApi.snapshot
+      .mockResolvedValueOnce(runningSnapshot)
+      .mockResolvedValueOnce(settledSnapshot);
+    render(<CodingChatPanel />);
+
+    const abortButton = await screen.findByRole('button', { name: '中止生成' });
+    fireEvent.click(abortButton);
+
+    await waitFor(() => expect(conversationApi.abort).toHaveBeenCalledWith(conversation.id));
+    await waitFor(() => expect(conversationApi.snapshot).toHaveBeenCalledTimes(2));
+    expect(await screen.findByRole('button', { name: '发送' })).toBeInTheDocument();
+  });
+
   it('caps one message at 16 images and uploads at most four concurrently', async () => {
     projectApi.list.mockResolvedValue({ projects: [project], activeProjectId: project.id });
     projectApi.config.mockResolvedValue({ project, config });