feat(battle-engine): M1 auto-copy closure (782 battle-logic files)

Compile-driven bulk-copy loop (tools/engine-port/m1_copy_loop.py) pulled the precise reference closure of the battle-core roots, stopping at the classify god-object/View-VFX-UI boundary. 782 files; no re-explosion (M0 had estimated ~order 1000). Residual frontier = 52 shim-classified + 80 external (Unity/BCL) types to author next.

SVSim.BattleEngine/Engine/DamageModifier.cs

@@ -0,0 +1,38 @@
+using System.Collections.Generic;
+
+public class DamageModifier
+{
+	public List<string> DamageType { get; protected set; }
+
+	public List<CardBasePrm.ClanType> DamageClan { get; protected set; }
+
+	public bool IsUseClass { get; protected set; }
+
+	public int OrderCount { get; protected set; }
+
+	public virtual int Calc(int damage)
+	{
+		return 0;
+	}
+
+	public bool IsEffective(string damageType, CardBasePrm.ClanType damageClan, bool isUseClass)
+	{
+		if (isUseClass != IsUseClass)
+		{
+			return false;
+		}
+		if (IsUseClass)
+		{
+			if (DamageType.Contains(damageType) || DamageType.Contains("_OPT_NULL_"))
+			{
+				if (!DamageClan.Contains(damageClan))
+				{
+					return DamageClan.Contains(CardBasePrm.ClanType.NONE);
+				}
+				return true;
+			}
+			return false;
+		}
+		return true;
+	}
+}