export function formatRuntime(ms: number): string {
  const totalSeconds = Math.max(0, Math.floor(ms / 1000));
  const seconds = totalSeconds % 60;
  const totalMinutes = Math.floor(totalSeconds / 60);
  if (totalMinutes === 0) return `${seconds}s`;
  const minutes = totalMinutes % 60;
  const hours = Math.floor(totalMinutes / 60);
  if (hours === 0) return `${minutes}m ${seconds}s`;
  return `${hours}h ${minutes}m`;
}