refactor(auth): 添加os模块导入以支持跨平台功能

src/auth/kiro-oauth.js

@@ -2,6 +2,7 @@ import http from 'http';
 import fs from 'fs';
 import path from 'path';
 import crypto from 'crypto';
+import os from 'os';
 import { broadcastEvent } from '../services/ui-manager.js';
 import { autoLinkProviderConfigs } from '../services/service-manager.js';
 import { CONFIG } from '../core/config-manager.js';