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/SkillPreprocessTurnEndRemove.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Wizard;
+using Wizard.Battle.View.Vfx;
+
+public class SkillPreprocessTurnEndRemove : SkillPreprocessBase
+{
+	private readonly string _target;
+
+	public SkillPreprocessTurnEndRemove(string target)
+	{
+		_target = target;
+	}
+
+	public override bool IsRight(BattlePlayerReadOnlyInfoPair playerInfoPair, SkillConditionCheckerOption option, bool PreexecutionCheck = false)
+	{
+		return true;
+	}
+
+	public override VfxBase Start(BattlePlayerPair playerPair, SkillBase skill, SkillProcessor skillProcessor, SkillOptionValue optionValue, SkillConditionCheckerOption checkerOption)
+	{
+		BattlePlayerBase battlePlayer = ((_target == "me") ? playerPair.Self : playerPair.Opponent);
+		Func<SkillProcessor, VfxBase> callStopOneTime = null;
+		callStopOneTime = delegate
+		{
+			battlePlayer.OnTurnEnd -= callStopOneTime;
+			ParallelVfxPlayer parallelVfxPlayer = ParallelVfxPlayer.Create();
+			BattleCardBase ownerCard = skill.SkillPrm.ownerCard;
+			parallelVfxPlayer.Register(skill.RemoveAfter());
+			ownerCard.Skills.Remove(skill);
+			List<BattleCardBase> list = playerPair.Self.InPlayCards.ToList();
+			list.AddRange(playerPair.Opponent.InPlayCards);
+			SkillIconInitialize(parallelVfxPlayer, list);
+			return parallelVfxPlayer;
+		};
+		battlePlayer.OnTurnEnd += callStopOneTime;
+		return NullVfx.GetInstance();
+	}
+}