feat: 优化细节

src/sheep/request/index.js

@@ -83,7 +83,8 @@ request.interceptors.request.use(
 
     // 添加语言请求头
     const currentLanguage = getCurrentLanguage();
-    config.headers['Accept-Language'] = currentLanguage;
+    const languageCode = currentLanguage === 'en-US' ? 'en' : 'zh';
+    config.headers['Accept-Language'] = languageCode;
     config.headers['lang'] = currentLanguage;
 
     // 🔑 API路由处理