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/VirtualBattlePlayer.cs

@@ -0,0 +1,71 @@
+using UnityEngine;
+using Wizard.Battle;
+using Wizard.Battle.UI;
+using Wizard.Battle.View;
+using Wizard.Battle.View.Vfx;
+
+public class VirtualBattlePlayer : BattlePlayer
+{
+	public override IStatusPanelControl StatusPanelControl => null;
+
+	public VirtualBattlePlayer(BattleManagerBase battleMgr, BattleCamera battleCamera, BackGroundBase backGround)
+		: base(battleMgr, battleCamera, backGround, NullInnerOptionsBuilder.GetInstance())
+	{
+	}
+
+	protected override void Initialize()
+	{
+		PlayerBattleView = new NullPlayerBattleView();
+	}
+
+	protected override IBattlePlayerVfxCreator CreateVfxCreator()
+	{
+		return new NullBattlePlayerVfxCreator();
+	}
+
+	public override void Setup(BattlePlayerBase opponentBattlePlayer)
+	{
+		base.Setup(opponentBattlePlayer);
+	}
+
+	protected override void SetActive()
+	{
+	}
+
+	public override EffectBattle GetSkillEffect(string skillEffectPath)
+	{
+		return null;
+	}
+
+	public override Vector3 GetFieldCenterPosition()
+	{
+		return Vector3.zero;
+	}
+
+	public override VfxBase CreateUpdateDeckCountLabelVfx()
+	{
+		return NullVfx.GetInstance();
+	}
+
+	protected override VfxBase CreateUpdateClassInfoVfx(bool playEffect)
+	{
+		return NullVfx.GetInstance();
+	}
+
+	public override BattleCardBase CreateCard(int cardId, int cardIndex, bool isChoiceBrave = false)
+	{
+		BattleCardBase battleCardBase = CardCreatorBase.CreateVirtualCard(cardId, cardIndex, IsPlayer, base.BattleMgr, this, _opponentBattlePlayer, _innerOptionsBuilder);
+		SetupCardEvent(battleCardBase);
+		return battleCardBase;
+	}
+
+	public override IClassInfomationUI CreateClassInfomationUI(int orderCount = 1, int clanId = -1, int totalInfoNum = 1)
+	{
+		return NullClassInfomationUI.GetInstance();
+	}
+
+	public override void SetupCardEvent(BattleCardBase card)
+	{
+		base.SetupCardEvent(card);
+	}
+}