Fix seed parameter conversion in ProductionDesignModel class

prod_model.py

@@ -106,7 +106,7 @@ class ProductionDesignModel(DesignModel):
             
             # Handle seed properly
             seed_param = kwargs.get('seed')
-            base_seed = int(time.time()) if seed_param is None else seed_param
+            base_seed = int(time.time()) if seed_param is None else int(seed_param)
             logging.info(f"Using base seed: {base_seed}")
             
             # Parameter validation