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/HandTRSCalculatorBase.cs

@@ -0,0 +1,22 @@
+using UnityEngine;
+
+public abstract class HandTRSCalculatorBase
+{
+	protected const float HAND_ALL_WIDTH = 700f;
+
+	protected const float CARD_WIDTH = 200f;
+
+	protected readonly Vector3 _handPos = Vector3.zero;
+
+	public HandTRSCalculatorBase(Vector3 handPos)
+	{
+		_handPos = handPos;
+	}
+
+	public abstract void CalcTRS(HandControl.HandState state, int handMax, int handIndex, ref Vector3 retPos, ref Vector3 retRot, ref Vector3 retScale);
+
+	protected float CalHandAllWidth(int handMax)
+	{
+		return Mathf.Min(200f * (float)(handMax - 1), 700f);
+	}
+}