refactor(services): 重构服务文件结构，将服务按功能分类到不同目录

- 将服务文件按功能分类到core、ai、analytics、security等目录
- 修复logger导入路径问题，统一使用相对路径
- 更新相关文件的导入路径引用
- 添加新的批量操作组件导出文件
- 修复dashboard页面中的类型错误
- 添加dotenv依赖到package.json

server/src/services/tenant/HierarchyService.ts

@@ -4,11 +4,11 @@
  * AI注意: 所有层级操作必须通过此服务进行
  */
 
-import db from '../config/database';
-import { logger } from '../utils/logger';
-import { EventBusService } from './EventBusService';
-import RedisService from './RedisService';
-import { DataIsolationService, HierarchyLevel, HierarchyNode, DataIsolationContext } from './DataIsolationService';
+import db from '../../config/database';
+import { logger } from '../../utils/logger';
+import { EventBusService } from '../utils/EventBusService';
+import RedisService from '../utils/RedisService';
+import { DataIsolationService, HierarchyLevel, HierarchyNode, DataIsolationContext } from '../integration/DataIsolationService';
 
 // 部门接口
 export interface Department {