/**
 * Parses an optional Hiboutik price (discount price, size price override).
 * Hiboutik sends "0.00" when the value is not set: returns null for empty, zero or invalid values.
 */
export function parseOptionalHiboutikPrice(value: string | null | undefined): string | null {
  if (!value) return null;

  const price = Number(value);
  return Number.isFinite(price) && price > 0 ? value : null;
}