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/CrossoverRestrictedCard.cs

@@ -0,0 +1,60 @@
+using System.Collections.Generic;
+using LitJson;
+
+namespace Wizard;
+
+public class CrossoverRestrictedCard
+{
+	public class Data
+	{
+		public readonly int BaseCardId;
+
+		public readonly int Count;
+
+		public Data(int baseCardId, int count)
+		{
+			BaseCardId = baseCardId;
+			Count = count;
+		}
+	}
+
+	private readonly List<Data> _mainClassDataList = new List<Data>();
+
+	private readonly List<Data> _subClassDataList = new List<Data>();
+
+	public void Parse(JsonData jsonData)
+	{
+		if (jsonData.TryGetValue("main_class", out var value) && value.IsObject)
+		{
+			foreach (string key in value.Keys)
+			{
+				if (int.TryParse(key, out var result))
+				{
+					_mainClassDataList.Add(new Data(result, value[key].ToInt()));
+				}
+			}
+		}
+		if (!jsonData.TryGetValue("sub_class", out var value2) || !value2.IsObject)
+		{
+			return;
+		}
+		foreach (string key2 in value2.Keys)
+		{
+			if (int.TryParse(key2, out var result2))
+			{
+				_subClassDataList.Add(new Data(result2, value2[key2].ToInt()));
+			}
+		}
+	}
+
+	public int GetRestrictedCountOrDefault(int baseCardId, ClassType classType, int defaultCount)
+	{
+		List<Data> list = ((classType == ClassType.MainClass) ? _mainClassDataList : _subClassDataList);
+		int num = list.FindIndex((Data data) => data.BaseCardId == baseCardId);
+		if (num >= 0)
+		{
+			return list[num].Count;
+		}
+		return defaultCount;
+	}
+}