feat(battle-engine): close the AI-simulation subsystem (verbatim)

Copied the 89 uncopied AI*SimulationUtility/extension files defining the
AIVirtualCard/AIVirtualField extension methods; the compile loop then auto-closed
the revealed type deps (~3049 files total, drift-clean). 10.0k -> 62 errors.

SVSim.BattleEngine/Engine/Cute/BootApp.cs

@@ -0,0 +1,75 @@
+using System.Collections;
+using System.Globalization;
+using System.Threading;
+using UnityEngine;
+using Wizard;
+
+namespace Cute;
+
+public class BootApp : MonoBehaviour
+{
+	public static string BootScene;
+
+	private Coroutine _logCoroutine;
+
+	private string _logMsg = "";
+
+	private IEnumerator Start()
+	{
+		_logCoroutine = StartCoroutine(WaitToAccumulateTraceLog());
+		_logMsg += "start";
+		createMutex();
+		restrainOSXProcess();
+		startSteamClient();
+		while (Toolbox.BootSystem == null)
+		{
+			yield return 0;
+		}
+		_logMsg += "start2";
+		CultureInfo.DefaultThreadCurrentUICulture = (CultureInfo.DefaultThreadCurrentCulture = new CultureInfo("ja-JP", useUserOverride: false));
+		Toolbox.AssetManager.createSavePath();
+		yield return StartCoroutine(FontChanger.FontTryChangePersistant(null));
+		_logMsg += "start3";
+		_logMsg += "start4";
+		StopCoroutine(_logCoroutine);
+		changeScene();
+	}
+
+	private IEnumerator WaitToAccumulateTraceLog()
+	{
+		yield return new WaitForSeconds(5f);
+		LocalLog.AccumulateTraceInquiryLog("BootApp " + _logMsg);
+	}
+
+	private void createMutex()
+	{
+		Toolbox.mute = new Mutex(initiallyOwned: false, "Global\\ShadowversePcPlatformGlobalThread");
+		if (Toolbox.mute != null && !Toolbox.mute.WaitOne(0, exitContext: false))
+		{
+			Toolbox.mute.Close();
+			Toolbox.mute = null;
+			Application.Quit();
+		}
+	}
+
+	private void startSteamClient()
+	{
+		_ = SteamManager.Initialized;
+	}
+
+	private void restrainOSXProcess()
+	{
+	}
+
+	private void changeScene()
+	{
+		if (BootScene != null)
+		{
+			Toolbox.SceneManager.ChangeScene(BootScene);
+		}
+		else
+		{
+			Toolbox.SceneManager.ChangeScene(SceneType._Splash);
+		}
+	}
+}