fix: 菜单顺序构建修复+types/menu接口定义

frontend/src/permission.ts

@@ -1,4 +1,4 @@
-import { MenuItem } from '../types/menu'
+import { MenuItem } from './types/menu'
 
 // ── 角色路由映射 ──
 export const ROLE_ROUTES: Record<string, string[]> = {

frontend/src/types/menu.ts

@@ -0,0 +1,7 @@
+export interface MenuItem {
+  path: string
+  label: string
+  icon: string
+  roles: string[]
+  group?: string
+}