feat: 优化架构

src/data/datasources/ApiDataSource.ts

@@ -3,7 +3,7 @@
  * 封装所有 API 调用，统一错误处理和请求拦截
  */
 
-import { api, ApiResponse, ApiError } from '../../services/api';
+import { api, ApiResponse, ApiError } from '@/services/core';
 import { IApiDataSource, DataSourceError } from './interfaces';
 
 export class ApiDataSource implements IApiDataSource {

src/data/datasources/WSClient.ts

@@ -14,7 +14,7 @@ import {
   WSGroupTypingMessage,
   WSGroupNoticeMessage,
   WSMessageType,
-} from '../../services/wsService';
+} from '@/services/core';
 
 // 事件处理器类型
 type EventHandler<T> = (data: T) => void;

src/data/repositories/MaterialRepository.ts

@@ -7,7 +7,7 @@ import type {
   MaterialFile,
   MaterialFileType,
 } from '../../types/material';
-import { api } from '../../services/api';
+import { api } from '@/services/core';
 
 // ==================== 接口定义 ====================