feat: 增加TCP转发错误日志，便于调试代理连接问题

Author: cmliu

_worker.js

@@ -578,6 +578,7 @@ async function forwardataTCP(host, portNum, rawData, ws, respHeader, remoteConnW
         try {
             await connecttoPry();
         } catch (err) {
+            console.log(`[TCP转发] SOCKS5/HTTP 代理连接失败: ${err.message}`);
             throw err;
         }
     } else {
@@ -587,6 +588,7 @@ async function forwardataTCP(host, portNum, rawData, ws, respHeader, remoteConnW
             remoteConnWrapper.socket = initialSocket;
             connectStreams(initialSocket, ws, respHeader, connecttoPry);
         } catch (err) {
+            console.log(`[TCP转发] 直连 ${host}:${portNum} 失败: ${err.message}`);
             await connecttoPry();
         }
     }