feat(battle-engine): close the AI-simulation subsystem (verbatim)

Copied the 89 uncopied AI*SimulationUtility/extension files defining the
AIVirtualCard/AIVirtualField extension methods; the compile loop then auto-closed
the revealed type deps (~3049 files total, drift-clean). 10.0k -> 62 errors.

SVSim.BattleEngine/Engine/Wizard/RoomBattleFinishTask.cs

@@ -0,0 +1,38 @@
+namespace Wizard;
+
+public class RoomBattleFinishTask : FinishTaskBase
+{
+	public RoomBattleFinishTask(bool isConvention, bool isGathering)
+	{
+		if (isConvention)
+		{
+			base.type = ApiType.Type.EventRoomMatchFinish;
+		}
+		else if (isGathering)
+		{
+			base.type = ApiType.Type.GatheringRoomBattleFinish;
+		}
+		else
+		{
+			base.type = ApiType.Type.OpenRoomMatchFinish;
+		}
+	}
+
+	protected override int Parse()
+	{
+		int num = base.Parse();
+		if (IsEffectiveErrorCode(num))
+		{
+			return num;
+		}
+		if (!IsResponseDataExist(base.ResponseData))
+		{
+			return num;
+		}
+		Data.RoomMatchFinish.data = new RoomMatchFinishDetail();
+		Data.RoomMatchFinish.data.class_chara_experience = 0;
+		Data.RoomMatchFinish.data.class_chara_level = 0;
+		new BattleFinishResponsProcessing().Processing(base.ResponseData, Data.RoomMatchFinish.data);
+		return num;
+	}
+}