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/BMSymbol.cs

@@ -0,0 +1,93 @@
+using System;
+using UnityEngine;
+
+[Serializable]
+public class BMSymbol
+{
+	public string sequence;
+
+	public string spriteName;
+
+	private UISpriteData mSprite;
+
+	private bool mIsValid;
+
+	private int mLength;
+
+	private int mOffsetX;
+
+	private int mOffsetY;
+
+	private int mWidth;
+
+	private int mHeight;
+
+	private int mAdvance;
+
+	private Rect mUV;
+
+	public int length
+	{
+		get
+		{
+			if (mLength == 0)
+			{
+				mLength = sequence.Length;
+			}
+			return mLength;
+		}
+	}
+
+	public int offsetX => mOffsetX;
+
+	public int offsetY => mOffsetY;
+
+	public int width => mWidth;
+
+	public int height => mHeight;
+
+	public int advance => mAdvance;
+
+	public Rect uvRect => mUV;
+
+	public void MarkAsChanged()
+	{
+		mIsValid = false;
+	}
+
+	public bool Validate(UIAtlas atlas)
+	{
+		if (atlas == null)
+		{
+			return false;
+		}
+		if (!mIsValid)
+		{
+			if (string.IsNullOrEmpty(spriteName))
+			{
+				return false;
+			}
+			mSprite = ((atlas != null) ? atlas.GetSprite(spriteName) : null);
+			if (mSprite != null)
+			{
+				Texture texture = atlas.texture;
+				if (texture == null)
+				{
+					mSprite = null;
+				}
+				else
+				{
+					mUV = new Rect(mSprite.x, mSprite.y, mSprite.width, mSprite.height);
+					mUV = NGUIMath.ConvertToTexCoords(mUV, texture.width, texture.height);
+					mOffsetX = mSprite.paddingLeft;
+					mOffsetY = mSprite.paddingTop;
+					mWidth = mSprite.width;
+					mHeight = mSprite.height;
+					mAdvance = mSprite.width + (mSprite.paddingLeft + mSprite.paddingRight);
+					mIsValid = true;
+				}
+			}
+		}
+		return mSprite != null;
+	}
+}