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/components.d.ts

@@ -88,6 +88,7 @@ declare module 'vue' {
     SitePickDialog: typeof import('./src/components/workbench/SitePickDialog.vue')['default']
     ThemeCustomizer: typeof import('./src/components/ThemeCustomizer.vue')['default']
     ThemeSwitcher: typeof import('./src/components/ThemeSwitcher.vue')['default']
+    VehicleHealthCard: typeof import('./src/components/fleet/VehicleHealthCard.vue')['default']
     VehicleMonitorPanel: typeof import('./src/components/workbench/VehicleMonitorPanel.vue')['default']
     WorkbenchSidePanel: typeof import('./src/components/workbench/WorkbenchSidePanel.vue')['default']
     Workspace3D: typeof import('./src/components/Workspace3D.vue')['default']