export function appendSpokenText(current: string, spoken: string): string {
  const next = spoken.replace(/\s+/g, ' ').trim();
  if (!next) return current;
  const prev = current.replace(/\s+$/g, '');
  if (!prev) return next;
  const glue = /[\s\n]$/.test(current) ? '' : ' ';
  return `${prev}${glue}${next}`;
}