feat(web): 迁移前端源代码（任务 T4.1）

- 删除 novalon 前端 src/ 下所有文件
- 从 gym-manage 复制前端 src/ 完整目录树
- 替换 gym-manage-api → novalon-manage-api
- 替换 gym_system → manage_system
- 无 gym 残留引用

novalon-manage-web/src/stores/permission.ts

@@ -2,19 +2,19 @@ import { defineStore } from 'pinia'
 import request from '@/utils/request'
 
 export interface MenuItem {
-  id: number
+  id: string
   name: string
   path: string
   icon?: string
-  parentId?: number
+  parentId?: string
   sort: number
   children?: MenuItem[]
 }
 
 interface BackendMenuItem {
-  id: number
+  id: string
   menuName: string
-  parentId: number
+  parentId: string
   orderNum: number
   menuType: string
   perms?: string
@@ -24,7 +24,7 @@ interface BackendMenuItem {
 }
 
 function transformMenuData(backendMenus: BackendMenuItem[]): MenuItem[] {
-  const menuMap = new Map<number, MenuItem>()
+  const menuMap = new Map<string, MenuItem>()
   const rootMenus: MenuItem[] = []
   
   const componentToPathMap: Record<string, string> = {
@@ -48,7 +48,7 @@ function transformMenuData(backendMenus: BackendMenuItem[]): MenuItem[] {
       name: menu.menuName,
       path: menu.component ? (componentToPathMap[menu.component] || `/${menu.component.replace('/index', '').replace('system/', '')}`) : '',
       icon: getMenuIcon(menu.menuName),
-      parentId: menu.parentId === 0 ? undefined : menu.parentId,
+      parentId: menu.parentId === '0' ? undefined : menu.parentId,
       sort: menu.orderNum
     }
     menuMap.set(menu.id, menuItem)
@@ -56,7 +56,7 @@ function transformMenuData(backendMenus: BackendMenuItem[]): MenuItem[] {
   
   filteredMenus.forEach(menu => {
     const menuItem = menuMap.get(menu.id)!
-    if (menu.parentId === 0) {
+    if (menu.parentId === '0') {
       rootMenus.push(menuItem)
     } else {
       const parentMenu = menuMap.get(menu.parentId)