"""I/O utilities (e.g., dataset loading, model caching)."""

from pathlib import Path
from typing import List, Dict, Any, Iterable
import json

def read_jsonl(path: Path) -> List[Dict[str, Any]]:
    """Read a JSON Lines file into a list of dicts."""
    with path.open() as f:
        return [json.loads(line) for line in f]

def write_jsonl(path: Path, rows: Iterable[Dict[str, Any]]) -> None:
    """Write a list/iterable of dicts as JSON Lines."""
    with path.open("w") as f:
        for row in rows:
            f.write(json.dumps(row) + "\n")