"""Shared environment loading for the submission root."""

from __future__ import annotations

from functools import lru_cache
from pathlib import Path


@lru_cache(maxsize=1)
def load_env_file() -> None:
    """Load `red_teaming_env/.env` when python-dotenv is available."""
    env_path = Path(__file__).resolve().parent / ".env"
    if not env_path.exists():
        return
    try:
        from dotenv import load_dotenv
    except Exception:
        return
    load_dotenv(env_path, override=False)