port(m1): wave 6i — Networking/Facebook/BestHTTP CS0103 statics (210->198)

- UnityEngine.Networking: UnityWebRequestTexture, DownloadHandlerTexture, DownloadHandlerAssetBundle.
- Facebook.Unity.AccessToken (CurrentAccessToken/TokenString/UserId).
- BestHTTP.Decompression.Zlib.GZipStream.UncompressBuffer; global DllCheck.Test.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

SVSim.BattleEngine/Shim/External/LooseEnds.cs

@@ -126,6 +126,7 @@ namespace Facebook.Unity
         string RawResult { get; }
     }
     public delegate void FacebookDelegate<T>(T result);
+    public class AccessToken { public string TokenString => ""; public string UserId => ""; public static AccessToken CurrentAccessToken => null; }
     public static class FB
     {
         public static bool IsLoggedIn => false;

SVSim.BattleEngine/Shim/External/SdkStubs.cs

@@ -90,6 +90,12 @@ namespace com.adjust.sdk
 namespace BestHTTP.Decompression { internal class _ShimAnchor { } }
 namespace BestHTTP.SocketIO.Transports { internal class _ShimAnchor { } }
 
+namespace BestHTTP.Decompression.Zlib
+{
+    public static class GZipStream { public static byte[] UncompressBuffer(byte[] data) => data; }
+}
+
 // Native plugins (no decomp source) referenced unqualified from global scope.
 public static class TimeNativePlugin { public static float GetDeviceOperatingTime() => 0f; }
 public static class Packsize { public static void Test() { } }
+public static class DllCheck { public static bool Test() => true; }

SVSim.BattleEngine/Shim/UnityEngine/UnityShimExt.cs

@@ -224,6 +224,9 @@ namespace UnityEngine.Networking
     public class UploadHandlerRaw : UploadHandler { public UploadHandlerRaw(byte[] data) { } }
     public class DownloadHandlerBuffer : DownloadHandler { }
     public class UnityWebRequestAsyncOperation : AsyncOperation { }
+    public static class UnityWebRequestTexture { public static UnityWebRequest GetTexture(string uri) => new UnityWebRequest(); }
+    public class DownloadHandlerTexture : DownloadHandler { public UnityEngine.Texture2D texture => null; public static UnityEngine.Texture2D GetContent(UnityWebRequest www) => null; }
+    public class DownloadHandlerAssetBundle : DownloadHandler { public UnityEngine.AssetBundle assetBundle => null; public static UnityEngine.AssetBundle GetContent(UnityWebRequest www) => null; }
 }
 
 namespace UnityEngine