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/UIParticleEffectManager.cs

@@ -0,0 +1,69 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Wizard;
+
+public class UIParticleEffectManager : MonoBehaviour
+{
+	[SerializeField]
+	private GameObject _groupPrefab;
+
+	private static readonly Vector3 START_POSITION = new Vector3(4000f, 0f, 0f);
+
+	private static readonly Vector3 OFFSET_POSITION = new Vector3(4000f, 0f, 0f);
+
+	private int _groupCount;
+
+	private List<UIParticleEffectGroup> _groupList = new List<UIParticleEffectGroup>();
+
+	public static UIParticleEffectManager Instance { get; private set; }
+
+	private void Awake()
+	{
+		Instance = this;
+	}
+
+	public UIParticleEffectGroup StartEffect(Effect2dCreateParam param, UITexture uiTexture, bool isEnableUpdateReposition)
+	{
+		UIParticleEffectGroup uIParticleEffectGroup = CreateNewGroup(uiTexture);
+		uIParticleEffectGroup.StartEffect(param, isEnableUpdateReposition);
+		return uIParticleEffectGroup;
+	}
+
+	public UIParticleEffectGroup AddEffect(GameObject effect, UITexture uiTexture)
+	{
+		UIParticleEffectGroup uIParticleEffectGroup = CreateNewGroup(uiTexture);
+		uIParticleEffectGroup.SetEffect(effect);
+		return uIParticleEffectGroup;
+	}
+
+	public void Remove(UIParticleEffectGroup group)
+	{
+		if (_groupList.Remove(group))
+		{
+			group.OnBeforeDestroy();
+			Object.Destroy(group.gameObject);
+		}
+	}
+
+	public UIParticleEffectGroup CreateNewGroup(UITexture uiTexture)
+	{
+		GameObject obj = NGUITools.AddChild(base.gameObject, _groupPrefab);
+		UIParticleEffectGroup component = obj.GetComponent<UIParticleEffectGroup>();
+		component.Initialize(uiTexture);
+		obj.transform.localPosition = START_POSITION + OFFSET_POSITION * _groupCount;
+		_groupCount++;
+		_groupList.Add(component);
+		return component;
+	}
+
+	public void OnChangeScene()
+	{
+		foreach (UIParticleEffectGroup group in _groupList)
+		{
+			Object.Destroy(group.gameObject);
+		}
+		_groupList.Clear();
+		_groupCount = 0;
+	}
+}