feat(frontend): add frontend-v2 modular architecture (Task 17)

- React 19 + TypeScript + Vite
- Module registration mechanism with dynamic loading
- Permission management system (basic/advanced/premium)
- Route guards for access control
- Error boundaries for module isolation
- 6 business module placeholders (AIA/ASL/PKB/DC/SSA/ST)
- Top navigation layout
- Tailwind CSS 3 + Ant Design 5

frontend-v2/src/framework/router/index.ts

@@ -0,0 +1,13 @@
+/**
+ * 路由系统模块导出
+ * 
+ * @description 统一导出路由守卫、权限拒绝页面等组件
+ * @version Week 2 Day 7 - 任务17
+ */
+
+export { default as RouteGuard } from './RouteGuard'
+export { default as PermissionDenied } from './PermissionDenied'
+
+
+
+