feat(vehicle-hub): 新增车辆运维页（健康监控 / 维护操作 / 批量管理）

- 新增 fleetHealth / vehicleOps API、useVehicleHub 组合式与 VehicleHealthCard 卡片
- 新增 /admin/config/vehicle-hub 与 /monitor/vehicle-hub 双端路由及侧栏菜单
- car 类型补充 rawId/onboardUrl/lstatus 及 FleetHealthRow/VehicleCardModel
- 后端 PageCatalog 注册「车辆运维」页，原「车辆维护」更名为「车辆维护策略」

Co-authored-by: Cursor <cursoragent@cursor.com>

frontends/apps/simple-platform-vue/src/api/vehicleOps.ts

@@ -0,0 +1,30 @@
+import { reflectionApi } from './reflection'
+
+export type VehicleMaintenanceMode = 'online' | 'offline' | 'repair' | 'blown'
+
+const METHOD_MAP: Record<VehicleMaintenanceMode, string> = {
+  online: 'OnlineCar',
+  offline: 'OfflineCar',
+  repair: 'Repair',
+  blown: 'Blown'
+}
+
+export async function setVehicleMaintenance(
+  carId: number,
+  mode: VehicleMaintenanceMode
+): Promise<boolean> {
+  const method = METHOD_MAP[mode]
+  if (!method) return false
+  try {
+    await reflectionApi.execute('car', carId, method)
+    return true
+  } catch {
+    return false
+  }
+}
+
+export function openOnboardWeb(url?: string | null, ip?: string | null): void {
+  const target = url ?? (ip ? `http://${ip}:8081` : null)
+  if (!target) return
+  window.open(target, '_blank', 'noopener,noreferrer')
+}