feat: add FabWorks.Core shared library with entity models and FormProgram

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

FabWorks.Core/Models/CutTemplate.cs

@@ -0,0 +1,31 @@
+using System;
+
+namespace FabWorks.Core.Models
+{
+    public class CutTemplate
+    {
+        public int Id { get; set; }
+        public string DxfFilePath { get; set; } = "";
+        public string ContentHash { get; set; }
+        public string CutTemplateName { get; set; } = "";
+
+        private double? _thickness;
+        public double? Thickness
+        {
+            get => _thickness;
+            set => _thickness = value.HasValue ? Math.Round(value.Value, 8) : null;
+        }
+
+        public double? KFactor { get; set; }
+
+        private double? _defaultBendRadius;
+        public double? DefaultBendRadius
+        {
+            get => _defaultBendRadius;
+            set => _defaultBendRadius = value.HasValue ? Math.Round(value.Value, 8) : null;
+        }
+
+        public int BomItemId { get; set; }
+        public virtual BomItem BomItem { get; set; }
+    }
+}