feat: 重构前端代码结构并添加Java后端支持

- 重构前端导入和组件结构，优化代码组织
- 添加Java后端基础框架和API实现
- 修复类型定义和接口兼容性问题
- 新增测试页面和工具函数
- 优化国际化支持和错误处理
- 更新依赖配置和构建脚本

新增Java后端模块：
- 实现基础认证、订单、支付等服务
- 添加Swagger API文档支持
- 配置数据库连接和缓存
- 实现国际化消息处理
- 添加安全过滤器和限流控制

server/src/logs/system.log

@@ -14,3 +14,6 @@
 {"timestamp":"2026-03-29T05:29:28.985Z","level":"info","message":"[RedisService] Connected to Redis"}
 {"timestamp":"2026-03-29T05:30:39.535Z","level":"error","message":"[RBAC] Missing auth context for request /my-shops"}
 {"timestamp":"2026-03-29T14:46:17.245Z","level":"info","message":"[RedisService] Connected to Redis"}
+{"timestamp":"2026-03-30T04:05:46.854Z","level":"info","message":"[RedisService] Connected to Redis"}
+{"timestamp":"2026-03-30T04:45:25.519Z","level":"info","message":"[RedisService] Connected to Redis"}
+{"timestamp":"2026-03-30T05:53:08.487Z","level":"info","message":"[RedisService] Connected to Redis"}