[ENH] Update data validation in structural elements & tests

Refactored `StructuralElement` attributes to use Pydantic's `Field` for improved data validation and added `exclude=True` where necessary. Enhanced serialization test to include model save after computation with validation.

gempy/core/data/structural_element.py

@@ -1,5 +1,6 @@
 import re
 from dataclasses import dataclass, field
+from pydantic import Field
 from typing import Optional
 
 import numpy as np
@@ -29,9 +30,9 @@ class StructuralElement:
 
     # Output
     # ? Should we extract this to a separate class?
-    vertices: Optional[np.ndarray] = None  #: The vertices of the element in 3D space.
-    edges: Optional[np.ndarray] = None  #: The edges of the element in 3D space.
-    scalar_field_at_interface: Optional[float] = None  #: The scalar field value for the element.
+    vertices: np.ndarray | None = Field(default=None, exclude=True)  #: The vertices of the element in 3D space.
+    edges: np.ndarray | None = Field(default=None, exclude=True)  #: The edges of the element in 3D space.
+    scalar_field_at_interface: float | None = None  #: The scalar field value for the element.
 
     _id: int = -1
 

test/test_modules/test_serialize_model.py

@@ -22,7 +22,7 @@ def test_generate_horizontal_stratigraphic_model():
             f.write(model_json)
 
     with loading_model_from_binary(
-        binary_body=model.structural_frame.input_tables_binary
+            binary_body=model.structural_frame.input_tables_binary
     ):
         model_deserialized = gp.data.GeoModel.model_validate_json(model_json)
 
@@ -50,17 +50,22 @@ def _validate_serialization(original_model, model_deserialized):
 def test_save_model_to_disk():
     model = gp.generate_example_model(ExampleModel.COMBINATION, compute_model=False)
     save_model(model, "temp/test_save_model_to_disk.gempy")
-    
+
     # Load the model from disk
     loaded_model = load_model("temp/test_save_model_to_disk.gempy")
     _validate_serialization(model, loaded_model)
-    
+
     gp.compute_model(loaded_model)
     if True:
         import gempy_viewer as gpv
         gpv.plot_3d(loaded_model, image=True)
-
 
+    # Test save after compute
+    save_model(
+        model=model,
+        path="temp/test_save_model_to_disk.gempy",
+        validate_serialization=True
+    )
 
 
 def test_interpolation_options():