feat(battle-engine): full Unity/VFX/god-object shims + expanded copy closure (2570 files)

Authored Unity primitive/object-model shim, VFX layer (control-flow-preserving, InstantVfx never invokes its action -- headless suppression), god-object stubs (GameMgr/EffectMgr/UIManager with faithfully-extracted nested enums), View/UI/Touch tree, LitJson+BetterList+Tuple copied, third-party stubs. Discovered Roslyn header-error masking: fixing class-header type errors unmasks body references, so the true copy closure is ~2570 files (was 782 under masking). Errors: masked-25720 -> 268; our shim files compile clean. Remaining: ~50 residual shim/external types, 24 NGUI UI-base overrides, static-type fixes, plus likely 1-2 more unmask waves.

SVSim.BattleEngine/Engine/Wizard/AIEvoHandSelect.cs

@@ -0,0 +1,32 @@
+using System.Collections.Generic;
+
+namespace Wizard;
+
+public class AIEvoHandSelect : AIEvoTagArgument
+{
+	public override bool IsImmediate => true;
+
+	public AIEvoHandSelect(string text)
+		: base(text)
+	{
+	}
+
+	public override bool IsTargetGoingToDie(AIVirtualCard owner, AIVirtualCard candidate, AISituationInfo situation)
+	{
+		return false;
+	}
+
+	protected override List<AIVirtualCard> GetCandidateRange(AIVirtualField field)
+	{
+		return field.GetSimulationHandCards();
+	}
+
+	protected override void CreateLegalSelectTypes()
+	{
+		base.LegalSelectTypes = new AIScriptTokenArgType[2]
+		{
+			AIScriptTokenArgType.TARGET_SELECT,
+			AIScriptTokenArgType.SECOND_TARGET_SELECT
+		};
+	}
+}