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/fleetHealth.ts

@@ -0,0 +1,37 @@
+import http from './http'
+import type { FleetHealthRow } from '@/types/car'
+import { CARS } from '@/mock/data/cars'
+
+const MOCK = import.meta.env.VITE_USE_MOCK === 'true'
+
+function mockFleetHealth(): FleetHealthRow[] {
+  return CARS.map((c, i) => {
+    const rawId = c.rawId ?? (parseInt(c.id.replace(/\D/g, ''), 10) || i + 1)
+    const ip = c.ip ?? `10.0.1.${10 + i}`
+    const reachable = c.state !== 'offline'
+    return {
+      carId: rawId,
+      carName: c.name,
+      ip,
+      onboardUrl: c.onboardUrl ?? `http://${ip}:8081`,
+      latencyMs: reachable ? 8 + i * 4 : 2000,
+      reachable,
+      probedAt: new Date().toISOString(),
+      uptimeSecs: 3600 + i * 120,
+      alarmActiveSecs: c.state === 'fault' ? 120 : i * 5,
+      faultRatePercent: c.state === 'fault' ? 3.2 : 0.1 * i,
+      isAlarmActive: c.state === 'fault',
+      cpuPercent: 20 + i * 8,
+      memPercent: 40 + i * 5
+    }
+  })
+}
+
+export async function fetchFleetHealth(): Promise<FleetHealthRow[]> {
+  if (MOCK) {
+    await new Promise((r) => setTimeout(r, 120))
+    return mockFleetHealth()
+  }
+  const { data } = await http.get<FleetHealthRow[]>('/sl/projection/fleet/health')
+  return Array.isArray(data) ? data : []
+}

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')
+}