fix: 增强后端Socket连接诊断日志

- connection事件记录远程IP/传输方式/是否携带auth token
- Web客户端注册记录请求来源IP,便于排查连接问题

src/index.ts

@@ -1171,7 +1171,10 @@ class RemoteControlServer {
 
   private setupSocketHandlers(): void {
     this.io.on('connection', (socket: any) => {
-      this.logger.info(`新连接建立: ${socket.id} (传输: ${socket.conn.transport.name})`)
+      const remoteAddr = socket.handshake?.address || 'unknown'
+      const transport = socket.conn?.transport?.name || 'unknown'
+      const hasAuth = !!socket.handshake?.auth?.token
+      this.logger.info(`[Conn] New connection: ${socket.id} (transport: ${transport}, ip: ${remoteAddr}, hasAuth: ${hasAuth})`)
 
       // 🔧 移除强制认证检查 - 让设备端可以正常连接，认证只在web客户端注册时进行
       // 🔧 增强连接监控，帮助诊断误断开问题
@@ -1661,7 +1664,9 @@ class RemoteControlServer {
    */
   private handleWebClientRegister(socket: any, data: any): void {
     try {
-      // 🔐 Web客户端认证验证：检查认证token
+      this.logger.info(`[WebClient] Register request from ${socket.id} (ip: ${socket.handshake?.address || 'unknown'})`)
+
+      // Web client auth: check token
       const token = socket.handshake.auth?.token
       if (!token) {
         this.logger.warn(`🔐 Web客户端注册缺少认证token: ${socket.id}`)