"""Metadata helpers extracted from session manager."""

from __future__ import annotations

import re
from typing import Pattern

DYNAMIC_VARIABLE_KEY_RE: Pattern[str] = re.compile(r"^[a-zA-Z_][a-zA-Z0-9_]{0,63}$")
DYNAMIC_VARIABLE_PLACEHOLDER_RE: Pattern[str] = re.compile(r"\{\{\s*([a-zA-Z_][a-zA-Z0-9_]*)\s*\}\}")