/** Publiczny adres witryny (linki w mailach, OG). Preferuj AUTH_URL z .env. */
export function getSiteOrigin(): string {
  const raw = process.env.AUTH_URL?.trim() || process.env.NEXT_PUBLIC_SITE_URL?.trim()
  if (raw) {
    try {
      const u = new URL(raw)
      return u.origin
    } catch {
      /* fall through */
    }
  }
  return 'https://twojalodka.pl'
}