feat(platform): add online vehicle statistics detail

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

@@ -6729,6 +6729,48 @@ test('shows vehicle-first statistics domains for one vehicle service', async ()
         })
       } as Response;
     }
+    if (path.includes('/api/statistics/online-vehicles')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            items: [
+              {
+                vin: 'VIN-STATS-SERVICE',
+                plate: '粤A统计服务1',
+                phone: '13307795425',
+                oem: 'G7s',
+                protocols: ['JT808', 'GB32960'],
+                online: true,
+                lastSeen: '2026-07-03 20:12:10',
+                offlineDurationMinutes: 0,
+                sourceCount: 2,
+                onlineSourceCount: 2,
+                bindingStatus: 'bound'
+              },
+              {
+                vin: 'VIN-STATS-SERVICE-OFFLINE',
+                plate: '粤A离线1',
+                phone: '13307795426',
+                oem: '广安车联',
+                protocols: ['JT808'],
+                online: false,
+                lastSeen: '2026-07-03 18:12:10',
+                offlineDurationMinutes: 120,
+                sourceCount: 1,
+                onlineSourceCount: 0,
+                bindingStatus: 'bound'
+              }
+            ],
+            total: 2,
+            limit: 10,
+            offset: 0
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
     return {
       ok: true,
       json: async () => ({
@@ -6750,9 +6792,13 @@ test('shows vehicle-first statistics domains for one vehicle service', async ()
   expect(screen.getByText('当前统计证据')).toBeInTheDocument();
   expect(screen.getByText('3 车 / 2 来源 / 3 条明细')).toBeInTheDocument();
   expect(await screen.findByText('75%')).toBeInTheDocument();
-  expect(screen.getByText((content) => content.includes('离线 1 车'))).toBeInTheDocument();
+  expect(screen.getAllByText((content) => content.includes('离线 1 车')).length).toBeGreaterThanOrEqual(1);
   expect(screen.getByText((content) => content.includes('Redis 在线 92 key'))).toBeInTheDocument();
   expect(screen.getByText((content) => content.includes('由车辆服务覆盖汇总、实时来源状态和 Redis 在线 key 计算'))).toBeInTheDocument();
+  expect(await screen.findByText('在线状态明细')).toBeInTheDocument();
+  expect(await screen.findByText('VIN-STATS-SERVICE-OFFLINE')).toBeInTheDocument();
+  expect(screen.getByText('粤A离线1')).toBeInTheDocument();
+  expect(screen.getByText('2 小时')).toBeInTheDocument();
 });
 
 test('copies mileage statistics summary for operations reporting', async () => {