/**
 * Generate a unique ID using the browser's crypto API.
 * Falls back to a timestamp-based ID if crypto is unavailable.
 */
export function generateId() {
  if (typeof crypto !== 'undefined' && crypto.randomUUID) {
    return crypto.randomUUID();
  }
  return `${Date.now()}-${Math.random().toString(36).slice(2, 11)}`;
}