```

chore(bridge): 删除桥接包的提交记录和Git属性配置

删除了 .codely-bridge-commit 文件中存储的提交哈希值
移除了 .gitattributes 文件中的行结束符配置规则
```

.codely.packages/cn.tuanjie.codely.bridge@1.0.85-47f31100/Editor/Bridge/Tools/PlatformMp4Encoder.cs

@@ -0,0 +1,84 @@
+using System;
+using UnityEngine;
+
+#if UNITY_EDITOR_WIN || UNITY_EDITOR_OSX
+using UnityEditor;
+using UnityEditor.Media;
+#endif
+
+namespace UnityTcp.Editor.Tools
+{
+    internal interface IMp4FrameEncoder : IDisposable
+    {
+        bool AddFrame(Texture2D frame);
+    }
+
+    internal static class PlatformMp4Encoder
+    {
+        internal static bool IsSupported
+        {
+            get
+            {
+#if UNITY_EDITOR_WIN || UNITY_EDITOR_OSX
+                return true;
+#else
+                return false;
+#endif
+            }
+        }
+
+        internal static string UnsupportedMessage =>
+            "Native MP4 recording is supported only on the Windows and macOS Editors. " +
+            "The Linux Editor does not ship a Unity MediaEncoder backend.";
+
+        internal static IMp4FrameEncoder Create(
+            string outputPath, int width, int height, int fps)
+        {
+#if UNITY_EDITOR_WIN || UNITY_EDITOR_OSX
+            return new UnityMediaEncoderMp4Encoder(outputPath, width, height, fps);
+#else
+            throw new PlatformNotSupportedException(UnsupportedMessage);
+#endif
+        }
+    }
+
+#if UNITY_EDITOR_WIN || UNITY_EDITOR_OSX
+    /// <summary>
+    /// Wraps UnityEditor.Media.MediaEncoder, which delegates to the platform
+    /// media backend: Media Foundation on Windows, AVFoundation on macOS.
+    /// Both produce H.264 in an MP4 container without any external binary.
+    /// </summary>
+    internal sealed class UnityMediaEncoderMp4Encoder : IMp4FrameEncoder
+    {
+        private MediaEncoder m_Encoder;
+
+        internal UnityMediaEncoderMp4Encoder(
+            string outputPath, int width, int height, int fps)
+        {
+            var attributes = new VideoTrackAttributes
+            {
+                frameRate = new MediaRational(fps),
+                width = (uint)width,
+                height = (uint)height,
+                includeAlpha = false,
+                bitRateMode = VideoBitrateMode.Medium,
+            };
+            m_Encoder = new MediaEncoder(outputPath, attributes);
+        }
+
+        public bool AddFrame(Texture2D frame)
+        {
+            if (m_Encoder == null)
+                throw new ObjectDisposedException(nameof(UnityMediaEncoderMp4Encoder));
+            return m_Encoder.AddFrame(frame);
+        }
+
+        public void Dispose()
+        {
+            MediaEncoder encoder = m_Encoder;
+            m_Encoder = null;
+            encoder?.Dispose();
+        }
+    }
+#endif
+}