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/Cute/SavedataManager.cs

@@ -0,0 +1,90 @@
+using CodeStage.AntiCheat.ObscuredTypes;
+using UnityEngine;
+
+namespace Cute;
+
+public class SavedataManager : MonoBehaviour, IManager
+{
+	public const string RESOURCE_VERSION_KEY = "RES_VER";
+
+	public const string LANGUAGE_FIRST_SET = "LANG_FIRST_SET";
+
+	public const string LANGUAGE_KEY = "LANG_SETTING";
+
+	public const string LANGUAGE_SOUND_KEY = "LANG_SOUND_SETTING";
+
+	public const string LANGUAGE_FONT_KEY = "LANG_FONT";
+
+	public static string OMOTENASHI_COUNTRY_KEY = "OMOTE_COUNTRY";
+
+	public static string LANGUAGE_CHANGE = "LANG_CHANGE";
+
+	private void Start()
+	{
+		Toolbox.SavedataManager = this;
+	}
+
+	private void OnDestroy()
+	{
+	}
+
+	public void DeleteAll()
+	{
+		ObscuredPrefs.DeleteAll();
+	}
+
+	public void DeleteKey(string key)
+	{
+		ObscuredPrefs.DeleteKey(key);
+	}
+
+	public float GetFloat(string key, float defaultValue = 0f)
+	{
+		return ObscuredPrefs.GetFloat(key, defaultValue);
+	}
+
+	public void SetFloat(string key, float value)
+	{
+		ObscuredPrefs.SetFloat(key, value);
+	}
+
+	public int GetInt(string key, int defaultValue = 0)
+	{
+		return ObscuredPrefs.GetInt(key, defaultValue);
+	}
+
+	public void SetInt(string key, int value)
+	{
+		ObscuredPrefs.SetInt(key, value);
+	}
+
+	public string GetString(string key, string defaultValue = "")
+	{
+		return ObscuredPrefs.GetString(key, defaultValue);
+	}
+
+	public void SetString(string key, string value)
+	{
+		ObscuredPrefs.SetString(key, value);
+	}
+
+	public bool HasKey(string key)
+	{
+		return ObscuredPrefs.HasKey(key);
+	}
+
+	public void Save()
+	{
+		ObscuredPrefs.Save();
+	}
+
+	public void SetResourceVersion(string version)
+	{
+		SetString("RES_VER", version);
+	}
+
+	public string GetResourceVersion()
+	{
+		return GetString("RES_VER", "00000000");
+	}
+}