from pathlib import Path

from worlddisasterlm.utils.io import ensure_dir


def export_onnx(model_path: str, output_path: str = "artifacts/model.onnx") -> Path:
    target = Path(output_path)
    ensure_dir(target.parent)
    target.write_text(
        "Placeholder ONNX artifact metadata. Replace with actual transformer export logic.",
        encoding="utf-8",
    )
    print(f"ONNX export stub created at {target} from model {model_path}")
    return target