feat(platform): export realtime vehicle page

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

@@ -5801,6 +5801,82 @@ test('frames realtime page as one vehicle service with source evidence', async (
   expect(screen.getAllByText('2/2 来源在线').length).toBeGreaterThan(0);
 });
 
+test('exports current realtime vehicles as CSV', async () => {
+  window.history.replaceState(null, '', '/#/realtime?protocol=JT808');
+  const createObjectURL = vi.spyOn(URL, 'createObjectURL').mockReturnValue('blob:realtime-export');
+  const revokeObjectURL = vi.spyOn(URL, 'revokeObjectURL').mockImplementation(() => undefined);
+  vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
+    const path = String(input);
+    if (path.includes('/api/ops/health')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: { linkHealth: [], kafkaLag: 0, redisOnlineKeys: 0, tdengineWritable: true, mysqlWritable: true, runtime: { requestTimeoutMs: 5000 } },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    if (path.includes('/api/realtime/vehicles')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            items: [{
+              vin: 'VIN-RT-EXPORT',
+              plate: '粤A实时导',
+              phone: '13300000001',
+              oem: 'G7s',
+              protocols: ['JT808'],
+              sourceStatus: [{ protocol: 'JT808', online: true, lastSeen: '2026-07-03 20:12:10', hasRealtime: true, hasHistory: true, hasRaw: true, hasMileage: true }],
+              sourceCount: 1,
+              onlineSourceCount: 1,
+              online: true,
+              bindingStatus: 'bound',
+              primaryProtocol: 'JT808',
+              longitude: 113.2,
+              latitude: 23.1,
+              speedKmh: 32,
+              socPercent: 76,
+              totalMileageKm: 1200.5,
+              lastSeen: '2026-07-03 20:12:10',
+              serviceStatus: {
+                status: 'healthy',
+                severity: 'ok',
+                title: '服务正常',
+                detail: '1/1 来源在线',
+                sourceCount: 1,
+                onlineSourceCount: 1
+              }
+            }],
+            total: 1,
+            limit: 50,
+            offset: 0
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    return {
+      ok: true,
+      json: async () => ({
+        data: { items: [], total: 0, limit: 50, offset: 0 },
+        traceId: 'trace-test',
+        timestamp: 1783094400000
+      })
+    } as Response;
+  });
+
+  render(<App />);
+
+  expect(await screen.findByRole('button', { name: '导出实时当前页 CSV' })).toBeInTheDocument();
+  fireEvent.click(screen.getByRole('button', { name: '导出实时当前页 CSV' }));
+
+  expect(createObjectURL).toHaveBeenCalled();
+  expect(revokeObjectURL).toHaveBeenCalledWith('blob:realtime-export');
+});
+
 test('opens vehicle service from realtime map service queue', async () => {
   window.history.replaceState(null, '', '/#/realtime');
   vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {