feat(battle-engine): clear header frontier (Item/ErrorDialog/SDK shims + infra copies)

Resolves the 268-error header frontier: settings Item base, ErrorDialog.Data,
RoomConnectController nested types, Unity asset/light/collider types, CriWare/
CodeStage/Spine SDK surface, and copies INetworkLogger + SingletonMonoBehaviour
verbatim. Per F3 this unmasks the type bodies (~26.5k member-level errors now
visible) -- the real M1 bulk, attacked in following waves.

SVSim.BattleEngine/Shim/View/ViewUiTouchStubs.cs

@@ -67,6 +67,8 @@ namespace Wizard.RoomMatch
     public class RoomConnectController
     {
         public enum BattleRule { None, Bo1 }
+        public enum PositionMode { OWNER, VISITOR, WATCHER }
+        public class InitializeParameter { }
     }
 }