Add setup.py for automatic .git isolation

setup.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+"""Download and set up MLE playbook skills for use with Claude Code Agent SDK."""
+from pathlib import Path
+from huggingface_hub import snapshot_download
+
+def setup_playbooks(target_dir: str = "mle-playbooks") -> Path:
+    target = Path(target_dir)
+    snapshot_download("t2ance/mle-playbooks", local_dir=str(target))
+    # Prevent CLI skill discovery from walking up to parent projects
+    (target / "playbooks" / ".git").mkdir(exist_ok=True)
+    print(f"Playbooks ready at: {target / 'playbooks'}")
+    print(f"Use as cwd with setting_sources=['project'] in ClaudeAgentOptions")
+    return target / "playbooks"
+
+if __name__ == "__main__":
+    setup_playbooks()