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/AIVirtualFusionSimulator.cs

@@ -0,0 +1,45 @@
+using System.Collections.Generic;
+
+namespace Wizard;
+
+public static class AIVirtualFusionSimulator
+{
+	public static void Fusion(AIVirtualTargetSelectAction situation, AIVirtualField field)
+	{
+		if (situation.ActionType != AIOperationType.FUSION)
+		{
+			AIConsoleUtility.LogError("AIVirtualFusionSimulator:Fusion() error!! situation is not [FUSION] ActionType!!!!!");
+			return;
+		}
+		if (!situation.IsTargetExists(AIScriptTokenArgType.TARGET_SELECT))
+		{
+			AIConsoleUtility.LogError("AIVirtualFusionSimulator:Fusion() error!! cannot find fusion ingredients!!!!!");
+			return;
+		}
+		FusionMoveCard(situation, field);
+		AIVirtualCard actor = situation.Actor;
+		if (actor.TagCollectionContainer.HasTag(AIPlayTagType.FusionMetamorphose))
+		{
+			actor.TagCollectionContainer.FusionMetamorphoseTags.ExecuteMetamorphose(actor, field, field.BestPlayPtn, situation);
+		}
+	}
+
+	private static void FusionMoveCard(AIVirtualTargetSelectAction situation, AIVirtualField field)
+	{
+		List<AIVirtualCard> targets = situation.GetSituationTarget(AIScriptTokenArgType.TARGET_SELECT).Targets;
+		bool isAlly = situation.Actor.IsAlly;
+		for (int i = 0; i < targets.Count; i++)
+		{
+			AIVirtualCard aIVirtualCard = targets[i];
+			if (isAlly)
+			{
+				field.RemoveAllyHandCard(aIVirtualCard);
+			}
+			else
+			{
+				field.RemoveEnemyHandCard(aIVirtualCard);
+			}
+			situation.Actor.FusionIngredients.AddFusionIngredient(aIVirtualCard, field.CurrentTurnCount);
+		}
+	}
+}