feat(platform): add online statistics summary

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

@@ -4516,6 +4516,27 @@ test('opens same-day mileage statistics from quality issue row', async () => {
         })
       } as Response;
     }
+    if (path.includes('/api/statistics/online-summary')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            vehicleCount: 4,
+            onlineVehicleCount: 3,
+            offlineVehicleCount: 1,
+            onlineRatePercent: 75,
+            redisOnlineKeys: 92,
+            protocolStats: [
+              { protocol: 'JT808', online: 2, total: 3 },
+              { protocol: 'GB32960', online: 1, total: 2 }
+            ],
+            evidence: '由车辆服务覆盖汇总、实时来源状态和 Redis 在线 key 计算'
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
     return {
       ok: true,
       json: async () => ({
@@ -6541,6 +6562,27 @@ test('shows vehicle-first statistics domains for one vehicle service', async ()
         })
       } as Response;
     }
+    if (path.includes('/api/statistics/online-summary')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            vehicleCount: 4,
+            onlineVehicleCount: 3,
+            offlineVehicleCount: 1,
+            onlineRatePercent: 75,
+            redisOnlineKeys: 92,
+            protocolStats: [
+              { protocol: 'JT808', online: 2, total: 3 },
+              { protocol: 'GB32960', online: 1, total: 2 }
+            ],
+            evidence: '由车辆服务覆盖汇总、实时来源状态和 Redis 在线 key 计算'
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
     return {
       ok: true,
       json: async () => ({
@@ -6561,6 +6603,10 @@ test('shows vehicle-first statistics domains for one vehicle service', async ()
   expect(screen.getByText('三类数据源最终汇总为一个车辆服务统计视图')).toBeInTheDocument();
   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.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();
 });
 
 test('copies mileage statistics summary for operations reporting', async () => {