[修正] EDGELINK_STATUS 改用 IP 位址取代臨時 port

臨時 port 每次重連都會改變，導致無法穩定識別設備。
改為只傳 IP 位址，確保重連後識別碼不變。

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Reymer

Server/NetworkServer/TCP/TCPServerConnector.cs

@@ -342,7 +342,7 @@ private void NotifyForwardTargetStatusChange(string status, PortData sourcePortD
     private async Task NotifyAsync(string status, PortData sourcePortData, IPEndPoint? endpoint = null)
     {
         string edgeStatus    = status == "CONNECT" ? "CONNECTED" : "DISCONNECTED";
-        string endpointStr   = endpoint?.ToString() ?? "";
+        string endpointStr   = endpoint?.Address?.ToString() ?? "";
         string notifyMessage = $"EDGELINK_STATUS:{edgeStatus}:{sourcePortData.ProtocolName}@{endpointStr}";
         byte[] notifyBytes   = Encoding.UTF8.GetBytes(notifyMessage + "\n");