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-admin.decorator.ts

@@ -1,12 +1,15 @@
-import { createParamDecorator, ExecutionContext } from '@nestjs/common';
-import { Request } from 'express';
-import { AdminUserRecord } from '../interfaces/admin-records.interface';
+/**
+ * CurrentAdmin decorator.
+ * @file 当前登录管理员装饰器
+ * @module decorators/current-admin.decorator
+ * @author zhxiao1124
+ */
 
-export const CurrentAdmin = createParamDecorator(
-  (_data: unknown, ctx: ExecutionContext): AdminUserRecord | undefined => {
-    const request = ctx
-      .switchToHttp()
-      .getRequest<Request & { adminUser?: AdminUserRecord }>();
+import { createParamDecorator, ExecutionContext } from "@nestjs/common";
+import { Request } from "express";
+import { AdminUserRecord } from "@src/admin/admin.types";
+
+export const CurrentAdmin = createParamDecorator((_data: unknown, ctx: ExecutionContext): AdminUserRecord | undefined => {
+    const request = ctx.switchToHttp().getRequest<Request & { adminUser?: AdminUserRecord }>();
     return request.adminUser;
-  },
-);
+});