feat(battle-engine): M1 auto-copy closure (782 battle-logic files)

Compile-driven bulk-copy loop (tools/engine-port/m1_copy_loop.py) pulled the precise reference closure of the battle-core roots, stopping at the classify god-object/View-VFX-UI boundary. 782 files; no re-explosion (M0 had estimated ~order 1000). Residual frontier = 52 shim-classified + 80 external (Unity/BCL) types to author next.

SVSim.BattleEngine/Engine/BattleLifeTimeSharedObject.cs

@@ -0,0 +1,29 @@
+using System.Collections.Generic;
+
+public class BattleLifeTimeSharedObject
+{
+	private Dictionary<string, SkillCreator.SkillBuildInfo> _skillBuildInfoSharedObject;
+
+	public BattleLifeTimeSharedObject()
+	{
+		_skillBuildInfoSharedObject = new Dictionary<string, SkillCreator.SkillBuildInfo>();
+	}
+
+	~BattleLifeTimeSharedObject()
+	{
+		_skillBuildInfoSharedObject.Clear();
+	}
+
+	public void SetSkillBuildInfo(string key, SkillCreator.SkillBuildInfo value)
+	{
+		if (!_skillBuildInfoSharedObject.ContainsKey(key))
+		{
+			_skillBuildInfoSharedObject.Add(key, value);
+		}
+	}
+
+	public SkillCreator.SkillBuildInfo GetSkillBuildInfo(string key)
+	{
+		return _skillBuildInfoSharedObject.GetValueOrDefault(key, null);
+	}
+}