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/ShieldInfo.cs

@@ -0,0 +1,31 @@
+public class ShieldInfo
+{
+	public enum ShieldType
+	{
+		ALL,
+		SKILL,
+		SPELL,
+		ATTACK
+	}
+
+	public BattleCardBase OwnerCard { get; private set; }
+
+	public ShieldType Type { get; private set; }
+
+	public ShieldInfo(BattleCardBase card, string type)
+	{
+		OwnerCard = card;
+		switch (type)
+		{
+		case "skill":
+			Type = ShieldType.SKILL;
+			break;
+		case "spell":
+			Type = ShieldType.SPELL;
+			break;
+		case "attack":
+			Type = ShieldType.ATTACK;
+			break;
+		}
+	}
+}