refactor: 完成项目整体目录重构与路径别名配置

1.  重构项目文件结构，统一文件存放位置与命名规则
2.  配置tsconfig路径别名，替换原有相对路径导入
3.  迁移drama-status枚举到dramas.types统一管理
4.  新增全局配置文件与工具类，补充完整注释与文档
5.  修复所有导入路径与依赖引用问题

decorators/current-user.decorator.ts

@@ -1,10 +1,15 @@
-import { createParamDecorator, ExecutionContext } from '@nestjs/common';
-import { Request } from 'express';
-import { UserRecord } from '../../users/interfaces/user-record.interface';
+/**
+ * CurrentUser decorator.
+ * @file 当前登录用户装饰器
+ * @module decorators/current-user.decorator
+ * @author zhxiao1124
+ */
 
-export const CurrentUser = createParamDecorator(
-  (_data: unknown, ctx: ExecutionContext): UserRecord | undefined => {
+import { createParamDecorator, ExecutionContext } from "@nestjs/common";
+import { Request } from "express";
+import { UserRecord } from "@src/users/users.types";
+
+export const CurrentUser = createParamDecorator((_data: unknown, ctx: ExecutionContext): UserRecord | undefined => {
     const request = ctx.switchToHttp().getRequest<Request & { user?: UserRecord }>();
     return request.user;
-  },
-);
+});