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/WatcherLeaveChecker.cs

@@ -0,0 +1,46 @@
+using System;
+using Cute;
+
+public class WatcherLeaveChecker : NetworkBattleIntervalCheckerBase
+{
+	private const float DISP_LEAVE_INTERVAL = 95f;
+
+	public bool isDisp;
+
+	private NetworkWatchBattleMgr WatchBattleMgr;
+
+	public event Action OnDisp;
+
+	public event Action OnErase;
+
+	public void EraseDisp()
+	{
+		if (isDisp)
+		{
+			this.OnErase.Call();
+			isDisp = false;
+		}
+	}
+
+	protected override void IntervalCheck()
+	{
+		base.IntervalCheck();
+		if ((float)NetworkUtility.GetTimeSpanSecond(base.startTick) >= 95f && WatchBattleMgr.disconnectDialog == null)
+		{
+			this.OnDisp.Call();
+			isDisp = true;
+			StopChecker();
+		}
+	}
+
+	public override void FinishChecker()
+	{
+		base.FinishChecker();
+		EraseDisp();
+	}
+
+	public void SetBattleMgr(NetworkWatchBattleMgr battleMgr)
+	{
+		WatchBattleMgr = battleMgr;
+	}
+}