"""Checkpoint utilities."""

from __future__ import annotations

import json
from pathlib import Path
from typing import Any


def save_checkpoint(path: Path, payload: dict[str, Any]) -> Path:
    path.parent.mkdir(parents=True, exist_ok=True)
    path.write_text(json.dumps(payload, ensure_ascii=True, indent=2), encoding="utf-8")
    return path


def load_checkpoint(path: Path) -> dict[str, Any]:
    return json.loads(path.read_text(encoding="utf-8"))