fix: merge conflict

src/brittle_star_project/dataclasses/PPOArgs.py

@@ -11,11 +11,17 @@ class PPOArgs:
     """
 
     # path to environment config file, if None, use default config
-    config_path: str | None = None
+    env_config_path: str | None = None
 
     # the name of this experiment
     exp_name: str = "brittle_star_ppo"
 
+    # the directory to save the experiment results
+    run_dir: str | None = None
+
+    # how often to save checkpoints (0 to disable)
+    checkpoint_frequency: int = 0
+
     # seed of the experiment
     seed: int = 1