feat(platform-web): surface vehicle service summary

vehicle-data-platform/apps/web/src/api/client.test.ts

@@ -141,6 +141,33 @@ test('vehicleServiceOverviews posts keywords to the batch overview endpoint', as
   expect(result.total).toBe(2);
 });
 
+test('vehicleServiceSummary reads the vehicle service summary endpoint', async () => {
+  const fetchMock = vi.spyOn(globalThis, 'fetch').mockResolvedValue({
+    ok: true,
+    json: async () => ({
+      data: {
+        totalVehicles: 1033,
+        boundVehicles: 1024,
+        onlineVehicles: 208,
+        singleSourceVehicles: 391,
+        multiSourceVehicles: 181,
+        noDataVehicles: 461,
+        identityRequiredVehicles: 9,
+        serviceStatuses: [{ status: 'healthy', title: '服务正常', count: 161 }],
+        protocols: [{ protocol: 'JT808', online: 157, total: 388 }]
+      },
+      traceId: 'trace-test',
+      timestamp: 1783094400000
+    })
+  } as Response);
+
+  const result = await api.vehicleServiceSummary();
+
+  expect(fetchMock).toHaveBeenCalledWith('/api/vehicle-service/summary', undefined);
+  expect(result.totalVehicles).toBe(1033);
+  expect(result.multiSourceVehicles).toBe(181);
+});
+
 test('api errors include backend message, detail, and trace id', async () => {
   vi.spyOn(globalThis, 'fetch').mockResolvedValue({
     ok: false,