feat: polish game HUD scoring and results

Assets/Editor/UnityCodexBridgeServer.cs

@@ -17,7 +17,8 @@ namespace VRBeats.EditorTools
     [InitializeOnLoad]
     internal static class UnityCodexBridgeServer
     {
-        private const int Port = 19744;
+        private const int PreferredPort = 19744;
+        private const int MaxPortAttempts = 5;
         private const string AutoStartPrefKey = "VRBeats.CodexBridge.AutoStart";
         private const int MaxLogs = 250;
 
@@ -28,6 +29,7 @@ namespace VRBeats.EditorTools
         private static TcpListener _listener;
         private static Thread _serverThread;
         private static bool _running;
+        private static int _port = PreferredPort;
         private static int _logIndex;
 
         static UnityCodexBridgeServer()
@@ -103,9 +105,7 @@ namespace VRBeats.EditorTools
 
             try
             {
-                _listener = new TcpListener(IPAddress.Loopback, Port);
-                _listener.Server.ExclusiveAddressUse = true;
-                _listener.Start();
+                _listener = CreateListener();
                 _running = true;
 
                 _serverThread = new Thread(ServerLoop)
@@ -115,7 +115,7 @@ namespace VRBeats.EditorTools
                 };
                 _serverThread.Start();
 
-                Debug.Log("[CodexBridge] Listening on http://127.0.0.1:" + Port);
+                Debug.Log("[CodexBridge] Listening on http://127.0.0.1:" + _port);
             }
             catch (Exception ex)
             {
@@ -160,6 +160,42 @@ namespace VRBeats.EditorTools
             _serverThread = null;
         }
 
+        private static TcpListener CreateListener()
+        {
+            Exception lastException = null;
+
+            for (int i = 0; i < MaxPortAttempts; i++)
+            {
+                int port = PreferredPort + i;
+                TcpListener listener = null;
+
+                try
+                {
+                    listener = new TcpListener(IPAddress.Loopback, port);
+                    listener.Server.ExclusiveAddressUse = true;
+                    listener.Start();
+                    _port = port;
+                    return listener;
+                }
+                catch (Exception ex)
+                {
+                    lastException = ex;
+
+                    try
+                    {
+                        if (listener != null)
+                            listener.Stop();
+                    }
+                    catch
+                    {
+                        // Ignore cleanup failures while trying fallback ports.
+                    }
+                }
+            }
+
+            throw lastException ?? new SocketException();
+        }
+
         private static bool IsBackgroundEditorProcess()
         {
             string commandLine = Environment.CommandLine;
@@ -391,7 +427,7 @@ namespace VRBeats.EditorTools
             string body =
                 "{\"ok\":true" +
                 ",\"bridge\":\"unity-codex-bridge\"" +
-                ",\"port\":" + Port.ToString(CultureInfo.InvariantCulture) +
+                ",\"port\":" + _port.ToString(CultureInfo.InvariantCulture) +
                 ",\"unityVersion\":" + JsonString(Application.unityVersion) +
                 ",\"projectPath\":" + JsonString(Directory.GetCurrentDirectory()) +
                 ",\"scene\":" + JsonString(scene.IsValid() ? scene.name : string.Empty) +