Fixed issues on take node which is not working on the list of response class for get apis

Examples/Nodify.Calculator/CalculatorViewModel.cs

@@ -452,15 +452,21 @@ namespace Nodify.Calculator
             takeListInput.ConnectorColor = sourceConnector.RawColor;
             takeListInput.DataType = sourceConnector.DataType;
 
-            // Determine the element type from a list type (e.g. "list<int>" -> "int")
+            // Determine the element type from a list type (e.g. "List<ClassName>" -> "ClassName")
             var elementType = sourceConnector.DataType ?? "";
-            if (elementType.StartsWith("list<") && elementType.EndsWith(">"))
+            if (elementType.StartsWith("List<", System.StringComparison.OrdinalIgnoreCase) && elementType.EndsWith(">"))
             {
                 elementType = elementType.Substring(5, elementType.Length - 6);
             }
 
             var elementColor = ConnectorViewModel.GetColorForType(elementType);
 
+            // Check if the element type is a model class (has a .cs file in CustomModels)
+            bool isModelType = false;
+            var modelFilePath = Path.Combine("CustomModels", $"{elementType}.cs");
+            if (File.Exists(modelFilePath))
+                isModelType = true;
+
             // Remove existing outputs
             var toRemove = takeOp.Output.ToList();
             toRemove.ForEach(o =>
@@ -469,13 +475,13 @@ namespace Nodify.Calculator
                 takeOp.Output.Remove(o);
             });
 
-            // Add single output for the element type
+            // Add single output for the element type — use Square shape for model types
             takeOp.Output.Add(new ConnectorViewModel
             {
                 Title = "Element",
                 IsInput = false,
-                Shape = ConnectorShape.Circle,
+                Shape = isModelType ? ConnectorShape.Square : ConnectorShape.Circle,
-                ConnectorColor = elementColor,
+                ConnectorColor = isModelType ? System.Drawing.Color.MediumPurple : elementColor,
                 DataType = elementType
             });
         }

Examples/Nodify.Calculator/Operations/OperationFactory.cs

@@ -279,7 +279,7 @@ namespace Nodify.Calculator
                             IsInput = false,
                             Shape = ConnectorShape.Square,
                             ConnectorColor = Color.MediumPurple,
-                            DataType = responseClassName.ToLower()
+                            DataType = responseClassName
                         });
                     }
                     else