feat: claude账户支持使用统一的客户端标识

src/middleware/auth.js

@@ -1092,7 +1092,7 @@ const globalRateLimit = async (req, res, next) =>
 
 // 📊 请求大小限制中间件
 const requestSizeLimit = (req, res, next) => {
-  const maxSize = 10 * 1024 * 1024 // 10MB
+  const maxSize = 60 * 1024 * 1024 // 60MB
   const contentLength = parseInt(req.headers['content-length'] || '0')
 
   if (contentLength > maxSize) {