Add inference.py required by OpenEnv validator

inference.py

@@ -0,0 +1,10 @@
+
+from baseline import run_baseline
+
+if __name__ == "__main__":
+    print("Running inference / baseline agent...")
+    response = run_baseline()
+    print(f"\nInference Results:")
+    for r in response.results:
+        print(f"  {r.difficulty.value:8} | {r.task_id:12} | score={r.score} | steps={r.steps}")
+    print(f"\nAverage Score: {response.average_score}")