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

src/logs/logs.service.ts

@@ -1,14 +1,14 @@
 import { Injectable, NotFoundException, Optional } from '@nestjs/common';
 import { InjectDataSource } from '@nestjs/typeorm';
 import { DataSource } from 'typeorm';
-import { PaginatedResponse } from '../../common/dto/paginated-response.dto';
-import { CreatePlaybackErrorLogDto } from './dto/create-playback-error-log.dto';
-import { PlaybackErrorLog } from './entities/playback-error-log.entity';
-import { RequestLog } from './entities/request-log.entity';
+import { PaginatedResponse } from '@app/common/paginated-response.dto';
+import { CreatePlaybackErrorLogDto } from './logs.dto';
+import { PlaybackErrorLog } from './playback-error-log.entity';
+import { RequestLog } from './request-log.entity';
 import {
   PlaybackErrorLogRecord,
   RequestLogRecord,
-} from './interfaces/log-records.interface';
+} from './logs.types';
 
 interface PaginationInput {
   page: number;