Checkpoint experiments through SWE pilot v2

scripts/run_experiment_bundle.py

@@ -0,0 +1,33 @@
+"""Validate and run one frozen unattended experiment bundle."""
+
+from __future__ import annotations
+
+import argparse
+import json
+from pathlib import Path
+
+from messageboardbench.experiment_bundle import load_and_validate, run_bundle
+
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--bundle", type=Path, required=True)
+    parser.add_argument("--validate-only", action="store_true")
+    args = parser.parse_args(argv)
+    bundle = args.bundle if args.bundle.is_absolute() else ROOT / args.bundle
+    manifest_path = bundle / "experiment.json"
+    try:
+        manifest, _ = load_and_validate(manifest_path, ROOT)
+    except (OSError, ValueError, json.JSONDecodeError) as exc:
+        parser.error(str(exc))
+    if args.validate_only:
+        print(f"Ready: {manifest['experiment_id']} ({manifest['manifest_sha256']})")
+        return 0
+    return run_bundle(manifest_path, ROOT)
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())