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/SkillPreprocessTimesPerBase.cs

@@ -0,0 +1,34 @@
+using Wizard;
+using Wizard.Battle.View.Vfx;
+
+public class SkillPreprocessTimesPerBase : SkillPreprocessBase
+{
+	protected int _invokeCount;
+
+	protected int _limitCount;
+
+	public SkillPreprocessTimesPerBase(int limit)
+	{
+		_limitCount = limit;
+	}
+
+	public override bool IsRight(BattlePlayerReadOnlyInfoPair playerInfoPair, SkillConditionCheckerOption option, bool PreexecutionCheck = false)
+	{
+		return _invokeCount < _limitCount;
+	}
+
+	public override VfxBase Start(BattlePlayerPair playerPair, SkillBase skill, SkillProcessor skillProcessor, SkillOptionValue optionValue, SkillConditionCheckerOption checkerOption)
+	{
+		_invokeCount++;
+		return NullVfx.GetInstance();
+	}
+
+	public override void Clone(SkillPreprocessBase source, SkillBase skill)
+	{
+		if (source is SkillPreprocessTimesPerBase skillPreprocessTimesPerBase)
+		{
+			_limitCount = skillPreprocessTimesPerBase._limitCount;
+			_invokeCount = skillPreprocessTimesPerBase._invokeCount;
+		}
+	}
+}