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/ConventionListPlate.cs

@@ -0,0 +1,59 @@
+using System;
+using Cute;
+using UnityEngine;
+using Wizard;
+
+public class ConventionListPlate : MonoBehaviour
+{
+	private const string DECK_ENTRY_SPRITE = "btn_decklogin";
+
+	private const string GAME_START_SPRITE = "btn_competition";
+
+	[SerializeField]
+	private UIButton _button;
+
+	[SerializeField]
+	private UILabel _conventionName;
+
+	[SerializeField]
+	private UILabel _deckSetTimeLimit;
+
+	private ConventionInfo _conventionInfo;
+
+	public Action<ConventionInfo> OnSelect { get; set; }
+
+	private void Start()
+	{
+		_button.onClick.Add(new EventDelegate(delegate
+		{
+			OnClickConvention();
+		}));
+	}
+
+	public void Initialize(ConventionInfo convention)
+	{
+		_conventionInfo = convention;
+		_conventionName.text = convention.Name;
+		if (convention.Status == ConventionInfo.ConventionStatus.GameStart)
+		{
+			_deckSetTimeLimit.gameObject.SetActive(value: false);
+			_button.normalSprite = "btn_competition";
+			return;
+		}
+		_deckSetTimeLimit.gameObject.SetActive(value: true);
+		_deckSetTimeLimit.text = Data.SystemText.Get("Arena_0126", convention.DeckEntryLimitText);
+		_button.normalSprite = "btn_decklogin";
+	}
+
+	public void FadeOutHide()
+	{
+		FadeUtility.FadeOutObjectAndNonActive(_button.gameObject);
+		_button.enabled = false;
+	}
+
+	private void OnClickConvention()
+	{
+		GameMgr.GetIns().GetSoundMgr().PlaySe(Se.TYPE.SYS_BTN_DECIDE);
+		OnSelect.Call(_conventionInfo);
+	}
+}