📝 "Refactor backend files

backend/app.py

@@ -1984,9 +1984,8 @@ def create_user_api():
         new_user = User(
             username=data["username"],
             email=data["email"],
-            first_name=data.get("first_name", ""),
-            last_name=data.get("last_name", ""),
-            is_admin=data.get("is_admin", False),
+            name=data.get("name", ""),
+            role="admin" if data.get("is_admin", False) else "user",
             created_at=datetime.now()
         )
         
@@ -2000,8 +1999,8 @@ def create_user_api():
             "id": new_user.id,
             "username": new_user.username,
             "email": new_user.email,
-            "first_name": new_user.first_name,
-            "last_name": new_user.last_name,
+            "name": new_user.name,
+            "role": new_user.role,
             "is_admin": new_user.is_admin,
             "created_at": new_user.created_at.isoformat()
         }
@@ -2326,9 +2325,8 @@ def admin_create_user_form():
         new_user = User(
             username=username,
             email=email,
-            first_name=name.split(' ')[0] if name else "",
-            last_name=" ".join(name.split(' ')[1:]) if name and ' ' in name else "",
-            is_admin=(role == "admin"),
+            name=name,
+            role=role,
             created_at=datetime.now()
         )