feat: 适配5.x后端，重构前端架构

主要变更：
1. 重构API目录结构，采用模块化设计，适配5.x后端接口规范
2. 优化布局组件，提升用户界面体验
3. 增强国际化支持，完善多语言配置
4. 新增权限控制功能，支持前端路由权限管理
5. 优化认证流程，支持JWT认证机制
6. 新增中间件和插件，提升系统扩展性
7. 优化状态管理，采用更清晰的模块化设计
8. 新增搜索框、广告等组件，丰富页面功能
9. 更改包管理工具从npm到pnpm，提升依赖管理效率
10. 完善配置系统，支持多环境配置

适配5.x后端特性：
- 采用新的API接口规范
- 支持JWT认证机制
- 适配后端权限控制体系
- 支持后端国际化接口
- 优化数据交互方式

app/lang/en/common.json

@@ -1,3 +1,41 @@
 {
-        "language": "语言en"
-}
+  "language": "Language",
+  "logout_login": "Logout",
+  "member_center": "Member Center",
+  "login": "Login",
+  "register": "Register",
+  "user": "User",
+  "get_sms_code": "Get SMS Code",
+  "sms_code_change_text": "seconds to resend",
+  "captcha_title": "Please complete security verification",
+  "confirm": "Confirm",
+  "cancel": "Cancel",
+  "siteClose": "Site Closed",
+  "setting": {
+    "config": {
+      "common": {
+        "title": "Common Config",
+        "description": "Common Config - Key-Value format with hierarchical data support",
+        "noData": "No Data",
+        "viewData": "View Data"
+      }
+    }
+  },
+  "request": {
+    "unknownError": "Unknown Error",
+    "400": "Bad Request",
+    "401": "Please Login Again",
+    "403": "Access Denied",
+    "404": "Request Error",
+    "405": "Method Not Allowed",
+    "408": "Request Timeout",
+    "409": "Request Cross-Origin",
+    "500": "Server Error, Reason:",
+    "501": "Network Not Implemented",
+    "502": "Network Error",
+    "503": "Service Unavailable",
+    "504": "Network Timeout",
+    "505": "HTTP Version Not Supported",
+    "timeout": "Network Request Timeout!"
+  }
+}