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/ChapterExtraData.cs

@@ -0,0 +1,57 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+public class ChapterExtraData
+{
+	public int SectionId { get; set; }
+
+	public int ExtraTextureChapter { get; set; }
+
+	public CardBasePrm.ClanType ClanType { get; set; } = CardBasePrm.ClanType.NONE;
+
+	public string BGSuffix { get; set; } = string.Empty;
+
+	public List<int> ExtraTextureIndex { get; set; } = new List<int>();
+
+	public int BGSectionId { get; set; } = -1;
+
+	public Dictionary<int, Texture> BGTexture { get; set; } = new Dictionary<int, Texture>();
+
+	public string BGExtraEffectPath { get; set; } = string.Empty;
+
+	public bool AttachExtraEffectToBgRoot { get; set; }
+
+	public GameObject ExtraEffect { get; set; }
+
+	public Se.TYPE SeType { get; set; }
+
+	public float ChapterMoveTime { get; set; } = 1.5f;
+
+	public string BGFirstClearEffectPath { get; set; } = string.Empty;
+
+	public GameObject FirstClearEffect { get; set; }
+
+	public Se.TYPE FirstClearSeType { get; set; }
+
+	public float FirstClearEffectDelayTime { get; set; }
+
+	public float FirstClearMoveDelayTime { get; set; }
+
+	public float FirstClearMoveOutDelayTime { get; set; }
+
+	public bool AddTreeEffect { get; set; }
+
+	public bool IsUseOtherSectionBG()
+	{
+		return BGSectionId != -1;
+	}
+
+	public bool IsChangeBG()
+	{
+		if (!IsUseOtherSectionBG())
+		{
+			return ExtraTextureIndex.Count > 0;
+		}
+		return true;
+	}
+}