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/TurnAndIntValue.cs

@@ -0,0 +1,37 @@
+public class TurnAndIntValue
+{
+	public const int NONE_TURN = -1;
+
+	public int Value { get; private set; }
+
+	public int Turn { get; private set; }
+
+	public bool IsSelfTurn { get; private set; }
+
+	public TurnAndIntValue(int value, int turn, bool isSelfTurn)
+	{
+		Value = value;
+		Turn = turn;
+		IsSelfTurn = isSelfTurn;
+	}
+
+	public void Increment()
+	{
+		int value = Value + 1;
+		Value = value;
+	}
+
+	public void AddValue(int count)
+	{
+		Value += count;
+	}
+
+	public bool IsSpecificTurn(int turn, bool isSelfTurn)
+	{
+		if (turn != -1 && Turn == turn)
+		{
+			return IsSelfTurn == isSelfTurn;
+		}
+		return false;
+	}
+}