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/UIPageIndicator.cs

@@ -0,0 +1,45 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Wizard;
+
+public class UIPageIndicator : UIBase
+{
+	[SerializeField]
+	private UIGrid _gridParentObj;
+
+	[SerializeField]
+	private UIToggle _indicatorOriginal;
+
+	private List<UIToggle> _indicatorList = new List<UIToggle>();
+
+	private int _maxPageNum;
+
+	public void Init(int maxPageNum, int defaultPage = 1)
+	{
+		_maxPageNum = maxPageNum;
+		if (maxPageNum <= 1)
+		{
+			_gridParentObj.gameObject.SetActive(value: false);
+		}
+		else
+		{
+			for (int i = 0; i < maxPageNum; i++)
+			{
+				_indicatorList.Add(NGUITools.AddChild(_gridParentObj.gameObject, _indicatorOriginal.gameObject).GetComponent<UIToggle>());
+			}
+			_indicatorOriginal.gameObject.SetActive(value: false);
+			_gridParentObj.gameObject.SetActive(value: true);
+			_gridParentObj.Reposition();
+		}
+		UpdateIndicator(defaultPage);
+	}
+
+	public void UpdateIndicator(int page)
+	{
+		if (page > 0 && _maxPageNum >= page && _indicatorList.Count > 0)
+		{
+			_indicatorList[page - 1].value = true;
+		}
+	}
+}