/**
 * Derives a stable, uppercase, underscore-separated code from a human-readable name.
 *
 * Examples:
 *   "Hazard Surcharge"  → "HAZARD_SURCHARGE"
 *   "20ft Dry Container" → "20FT_DRY_CONTAINER"
 *   "Kality Yard (ET)"   → "KALITY_YARD_ET"
 */
export function generateCode(name: string): string {
  return name
    .trim()
    .toUpperCase()
    .replace(/[^A-Z0-9]+/g, '_')
    .replace(/^_+|_+$/g, '');
}