"""Column contract for the Pager-style MAGAR-Bench Parquet export."""

PARQUET_COLUMNS = {
    "sample_id": "string",
    "split": "string",
    "task_family": "string",
    "assembly_id": "string",
    "variant_id": "string",
    "episode_id": "string",
    "input_text": "string",
    "target_text": "nullable string; Train only",
    "image_paths": "list[string]",
    "image_roles": "list[string]",
    "metadata_json": "JSON string",
}

PUBLIC_SPLITS = ("train", "test")
TEST_TARGET_POLICY = "test.parquet must contain no target_text values"