feat: add CuttingResult struct

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

OpenNest.Core/CNC/CuttingStrategy/CuttingResult.cs

@@ -0,0 +1,11 @@
+using OpenNest.CNC;
+using OpenNest.Geometry;
+
+namespace OpenNest.CNC.CuttingStrategy
+{
+    public readonly struct CuttingResult
+    {
+        public Program Program { get; init; }
+        public Vector LastCutPoint { get; init; }
+    }
+}

OpenNest.Engine.Tests/CuttingResultTests.cs

@@ -0,0 +1,23 @@
+using OpenNest.CNC;
+using OpenNest.CNC.CuttingStrategy;
+using OpenNest.Geometry;
+using Xunit;
+
+namespace OpenNest.Engine.Tests;
+
+public class CuttingResultTests
+{
+    [Fact]
+    public void CuttingResult_StoresValues()
+    {
+        var pgm = new Program();
+        pgm.Codes.Add(new RapidMove(new Vector(1, 2)));
+        var point = new Vector(3, 4);
+
+        var result = new CuttingResult { Program = pgm, LastCutPoint = point };
+
+        Assert.Same(pgm, result.Program);
+        Assert.Equal(3, result.LastCutPoint.X);
+        Assert.Equal(4, result.LastCutPoint.Y);
+    }
+}