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/AspectCameraPerspective.cs

@@ -0,0 +1,44 @@
+using UnityEngine;
+
+public class AspectCameraPerspective : MonoBehaviour
+{
+	private Camera m_camera;
+
+	private bool m_isSetFOV;
+
+	public void UpdateFov()
+	{
+		m_isSetFOV = false;
+	}
+
+	private void Start()
+	{
+		m_camera = GetComponent<Camera>();
+	}
+
+	private void Update()
+	{
+		if (!m_isSetFOV && GameMgr.GetIns() != null && m_camera != null)
+		{
+			float num = 0f;
+			float num2 = 0f;
+			if (Screen.width > Screen.height)
+			{
+				num = Screen.width;
+				num2 = Screen.height;
+			}
+			else
+			{
+				num = Screen.height;
+				num2 = Screen.width;
+			}
+			float num3 = num / num2;
+			if (num3 > 1.7777778f)
+			{
+				num3 = 1.7777778f;
+			}
+			m_camera.fieldOfView = Mathf.Atan2(1f, num3) * 57.29578f * 2f;
+			m_isSetFOV = true;
+		}
+	}
+}