refactor(types): 重构类型系统，统一共享类型定义

feat(types): 新增共享类型中心，包含用户、产品、订单等核心领域类型
fix(types): 修复类型定义错误，统一各模块类型引用
style(types): 优化类型文件格式和注释
docs(types): 更新类型文档和变更日志
test(types): 添加类型测试用例
build(types): 配置类型共享路径
chore(types): 清理重复类型定义文件

extension/tsconfig.json

@@ -17,7 +17,9 @@
     "jsx": "react-jsx",
     "baseUrl": ".",
     "paths": {
-      "@/*": ["./src/*"]
+      "@/*": ["./src/*"],
+      "@shared/types": ["../server/src/shared/types"],
+      "@shared/types/*": ["../server/src/shared/types/*"]
     }
   },
   "include": ["src"],