Add text inset for better adhesion

- Increase text thickness to 2.3mm (base 2.0mm + 0.3mm inset compensation)
- Adjust text Z offset to 2.7mm to inset text into background
- Total height remains at 5mm
- Update README to reflect new text thickness

.gitignore

@@ -1,2 +1,3 @@
 .venv/
-
+nametags/
+stls/

convert_nametags.py

@@ -205,6 +205,8 @@ def create_extrusion(paths, height, z_offset=0.0, scale=1.0):
         else:
             mesh = trimesh.util.concatenate(meshes)
             
+
+            
         mesh.apply_translation([0, 0, z_offset])
         return mesh
     except Exception as e: