feat(rbac-web): 前端页面级权限与「权限与角色」管理页

- 新增 rbac 的 api/types/mock，对接后端 catalog/roles/users；mock 模式与后端 PageCatalog 完全对齐
- EffectivePermissions 增加 allowedPages，auth store 新增 hasPage 判定
- 路由守卫按 route.name = 页面 Key 做页面级放行，无权时跳转到 scope 内首个可访问页面；AppShell 菜单按 hasPage 过滤
- 路由守卫 switchScope 失败自动重试一次；新增懒加载 chunk 失败整页自愈 onError，修复切页白屏
- PermissionGuard hidden 态改为友好空态提示；AuthRoleView 重写为完整的用户/角色/权限编辑界面

frontends/apps/simple-platform-vue/src/mock/server.ts

@@ -9,6 +9,7 @@ import { TRACKS } from './data/tracks'
 import { CARS } from './data/cars'
 import { MISSIONS } from './data/missions'
 import { CONFIG_DEFAULTS } from './data/configs'
+import { mockComputeAllowedPages } from './rbac'
 
 const PLATFORM_OPS = ['*']
 
@@ -26,6 +27,7 @@ function buildPerm(scope: 'Platform' | 'RCSMonitor', username: string): Effectiv
       userId: `u-${username}`,
       version: 1,
       allowedOps: PLATFORM_OPS,
+      allowedPages: mockComputeAllowedPages(username, 'Platform'),
       visibleWidgets: [
         { widgetId: 'MapEditor', visibility: 'interactive' },
         { widgetId: 'CadToolbar', visibility: 'interactive' },
@@ -40,6 +42,7 @@ function buildPerm(scope: 'Platform' | 'RCSMonitor', username: string): Effectiv
     userId: `u-${username}`,
     version: 1,
     allowedOps: RCS_OPS,
+    allowedPages: mockComputeAllowedPages(username, 'RCSMonitor'),
     visibleWidgets: [
       { widgetId: 'MapEditor', visibility: 'readonly' },
       { widgetId: 'CadToolbar', visibility: 'hidden' },