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/SkillFilterVariable.cs

@@ -0,0 +1,31 @@
+using Wizard;
+using Wizard.Battle;
+
+public class SkillFilterVariable
+{
+	private readonly BattlePlayerReadOnlyInfoPair m_playerInfoPair;
+
+	private readonly IReadOnlyBattleCardInfo m_ownerCardInfo;
+
+	private readonly SkillConditionCheckerOption _checkerOption;
+
+	private readonly bool _isPrePlay;
+
+	private readonly SkillBase _skill;
+
+	public SkillFilterVariable(BattlePlayerReadOnlyInfoPair playerInfoPair, IReadOnlyBattleCardInfo ownerCardInfo, bool isPrePlay, SkillBase skill, SkillConditionCheckerOption checkerOption = null)
+	{
+		m_playerInfoPair = playerInfoPair;
+		m_ownerCardInfo = ownerCardInfo;
+		_checkerOption = ((checkerOption != null) ? checkerOption : new SkillConditionCheckerOption());
+		_isPrePlay = isPrePlay;
+		_skill = skill;
+	}
+
+	public int Parse(string text)
+	{
+		VariableSkillFilterCollection variableSkillFilterCollection = new VariableSkillFilterCollection(_checkerOption.IsSkipPrivateCardCheck);
+		SkillFilterCreator.SetupVariable(variableSkillFilterCollection, text, m_ownerCardInfo, _skill);
+		return variableSkillFilterCollection.Filtering(m_playerInfoPair, _checkerOption, _isPrePlay);
+	}
+}