from __future__ import annotations

from pathlib import Path

PROMPTS_DIR = Path(__file__).resolve().parent / "prompts"


def load_prompt_template(filename: str) -> str:
    path = PROMPTS_DIR / filename
    try:
        return path.read_text(encoding="utf-8").strip()
    except FileNotFoundError as exc:
        raise RuntimeError(f"Prompt template not found: {path}") from exc