fix：修复Pino日志配置的Worker线程序列化问题

- 移除customPrettifiers中的箭头函数以避免DataCloneError
- 修复未使用参数的TypeScript警告
- 替换已弃用的substr方法为substring

src/core/utils/logger/logger.config.ts

@@ -82,7 +82,7 @@ export class LoggerConfigFactory {
         },
         
         // 自定义错误响应消息
-        customErrorMessage: (req: any, res: any, err: any) => {
+        customErrorMessage: (req: any, _res: any, err: any) => {
           return `${req.method} ${req.url} failed: ${err.message}`;
         },
       },
@@ -152,20 +152,7 @@ export class LoggerConfigFactory {
               translateTime: 'SYS:yyyy-mm-dd HH:MM:ss',
               ignore: 'pid,hostname',
               messageFormat: '{app} [{level}] {msg}',
-              customPrettifiers: {
+              // 移除 customPrettifiers 以避免 Worker 线程序列化问题
-                time: (timestamp: any) => `🕐 ${timestamp}`,
-                level: (logLevel: any) => {
-                  const levelEmojis: Record<number, string> = {
-                    10: '🔍', // trace
-                    20: '🐛', // debug  
-                    30: '📝', // info
-                    40: '⚠️',  // warn
-                    50: '❌', // error
-                    60: '💀', // fatal
-                  };
-                  return `${levelEmojis[logLevel] || '📝'} ${logLevel}`;
-                },
-              },
             },
             level: logLevel,
           },
@@ -231,13 +218,13 @@ export class LoggerConfigFactory {
   /**
    * 自定义日志级别判断
    * 
-   * @param req HTTP 请求对象
+   * @param _req HTTP 请求对象
    * @param res HTTP 响应对象
    * @param err 错误对象
    * @returns 日志级别
    * @private
    */
-  private static customLogLevel(req: any, res: any, err: any) {
+  private static customLogLevel(_req: any, res: any, err: any) {
     if (res.statusCode >= 400 && res.statusCode < 500) {
       return 'warn';
     } else if (res.statusCode >= 500 || err) {
@@ -255,7 +242,7 @@ export class LoggerConfigFactory {
    * @private
    */
   private static generateRequestId(): string {
-    return `req_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
+    return `req_${Date.now()}_${Math.random().toString(36).substring(2, 11)}`;
   }
 
   /**