cull(engine-cleanup): pass-8 phase-2 cascade round 1

[trim] fully-unreachable files deleted: 6
[trim] files edited: 55, files deleted: 0, nodes removed: 244
[type-trim] files edited: 1, types removed: 1

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

SVSim.BattleEngine/Engine/TurnEndButtonUI.cs

@@ -12,9 +12,7 @@ public class TurnEndButtonUI : UIBase, ITurnEndButtonUI
 	public enum ViewType
 	{
 		Normal,
-		Watch,
-		Replay
-	}
+		Watch	}
 
 	[SerializeField]
 	private GameObject BtnMain;
@@ -22,9 +20,6 @@ public class TurnEndButtonUI : UIBase, ITurnEndButtonUI
 	[SerializeField]
 	private UILabel TitleLabel;
 
-	[SerializeField]
-	private UISprite TurnEndButtonImg;
-
 	[SerializeField]
 	private UIButton TurnEndButtonButton;