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/Cute/AssetErrorState.cs

@@ -0,0 +1,93 @@
+using System.Collections.Generic;
+
+namespace Cute;
+
+public class AssetErrorState
+{
+	public enum Code
+	{
+		NONE = 0,
+		SERVER_TIMEOUT = 1,
+		SERVER_UNDEFINED_ERROR = 2,
+		LOCAL_CAPACITY_OVER = 4,
+		CANCELED = 8,
+		FILE_READ_ERROR = 0x10,
+		SERVER_NOT_FOUND_ERROR = 0x20
+	}
+
+	public enum DialogDecision
+	{
+		UNDECIDED,
+		RETRY,
+		TERMINATE
+	}
+
+	private Dictionary<string, Code> errors = new Dictionary<string, Code>();
+
+	public DialogDecision lastDialogDecision;
+
+	public int errorFlag { get; private set; }
+
+	public bool canceled { get; private set; }
+
+	public bool HasError()
+	{
+		return errorFlag != 0;
+	}
+
+	public bool HasError(Code code)
+	{
+		return ((uint)errorFlag & (uint)code) != 0;
+	}
+
+	public void SetCanceled()
+	{
+		canceled = true;
+	}
+
+	public int ErrorCount()
+	{
+		return errors.Count;
+	}
+
+	public AssetErrorState()
+	{
+		Reset();
+	}
+
+	public void Report(string filename, Code errorCode)
+	{
+		if (errorCode != Code.NONE)
+		{
+			errorFlag |= (int)errorCode;
+			errors[filename] = errorCode;
+		}
+	}
+
+	public Code Query(string filename)
+	{
+		if (!errors.TryGetValue(filename, out var value))
+		{
+			return Code.NONE;
+		}
+		return value;
+	}
+
+	public void Reset()
+	{
+		errorFlag = 0;
+		lastDialogDecision = DialogDecision.UNDECIDED;
+		errors.Clear();
+		canceled = false;
+	}
+
+	public List<string> GatherErrorFilenames()
+	{
+		List<string> list = new List<string>();
+		foreach (KeyValuePair<string, Code> error in errors)
+		{
+			list.Add(error.Key);
+		}
+		return list;
+	}
+}