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/RepeatTimer.cs

@@ -0,0 +1,32 @@
+using UnityEngine;
+
+public class RepeatTimer : Timer
+{
+	private float interval;
+
+	public RepeatTimer(float time, OnEndDelegate onEndEvent)
+		: base(time, onEndEvent)
+	{
+		interval = time;
+	}
+
+	public override void Update()
+	{
+		if (!base.IsEnd)
+		{
+			RemainTimeSec -= Time.deltaTime;
+			if (!(RemainTimeSec > 0f))
+			{
+				base.IsEnd = true;
+				OnFinish();
+			}
+		}
+	}
+
+	private void OnFinish()
+	{
+		CallEvent();
+		RemainTimeSec = interval;
+		base.IsEnd = false;
+	}
+}