feat(ui): wire TitleBlockEntityIds through FileListItem and CadConverterForm

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

OpenNest/Controls/FileListControl.cs

@@ -20,6 +20,7 @@ namespace OpenNest.Controls
         public List<Entity> OriginalEntities { get; set; }
         public List<Bend> Bends { get; set; } = new();
         public HashSet<Guid> SuppressedEntityIds { get; set; }
+        public HashSet<Guid> TitleBlockEntityIds { get; set; }
         public Box Bounds { get; set; }
         public int EntityCount { get; set; }
         public List<CadText> Texts { get; set; } = new();

OpenNest/Forms/CadConverterForm.cs

@@ -94,8 +94,16 @@ namespace OpenNest.Forms
                     Bounds = result.Bounds,
                     EntityCount = result.Entities.Count,
                     Texts = ExtractTexts(result.Document),
+                    TitleBlockEntityIds = result.TitleBlockEntityIds,
                 };
 
+                if (result.TitleBlockEntityIds != null && result.TitleBlockEntityIds.Count > 0)
+                {
+                    item.SuppressedEntityIds ??= new HashSet<Guid>();
+                    foreach (var id in result.TitleBlockEntityIds)
+                        item.SuppressedEntityIds.Add(id);
+                }
+
                 if (InvokeRequired)
                     BeginInvoke((Action)(() => fileList.AddItem(item)));
                 else