feat(platform): filter dashboard by missing source

vehicle-data-platform/apps/web/src/test/App.test.tsx

@@ -755,6 +755,52 @@ test('filters dashboard coverage by service status', async () => {
   expect(screen.getByText('当前筛选：部分来源离线')).toBeInTheDocument();
 });
 
+test('filters dashboard coverage by missing source evidence', async () => {
+  window.history.replaceState(null, '', '/#/dashboard');
+  const fetchMock = vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
+    const path = String(input);
+    if (path.includes('/api/dashboard/summary')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            onlineVehicles: 3,
+            activeToday: 4,
+            frameToday: 1286320,
+            issueVehicles: 7,
+            kafkaLag: 0,
+            protocols: [],
+            serviceStatuses: [],
+            linkHealth: []
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    return {
+      ok: true,
+      json: async () => ({
+        data: { items: [], total: 0, limit: 8, offset: 0 },
+        traceId: 'trace-test',
+        timestamp: 1783094400000
+      })
+    } as Response;
+  });
+
+  render(<App />);
+
+  expect(await screen.findByText('车辆服务覆盖')).toBeInTheDocument();
+  fireEvent.click(screen.getByTestId('dashboard-missing-protocol-filter'));
+  fireEvent.click(await screen.findByText('缺 YUTONG_MQTT'));
+  fireEvent.click(screen.getByRole('button', { name: '筛选' }));
+
+  await waitFor(() => {
+    expect(fetchMock).toHaveBeenCalledWith(expect.stringContaining('missingProtocol=YUTONG_MQTT'), undefined);
+  });
+  expect(screen.getByText('当前筛选：缺 YUTONG_MQTT')).toBeInTheDocument();
+});
+
 test('opens dashboard coverage from service status distribution', async () => {
   window.history.replaceState(null, '', '/#/dashboard');
   const fetchMock = vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {