Function stepFilenamePrefix

src/lib/bundle.ts:347–349

(stepIndex: number)

 * naturally without breaking existing fixtures.
 */
export function stepFilenamePrefix(stepIndex: number): string {
  return stepIndex >= 100 ? String(stepIndex).padStart(3, '0') : String(stepIndex).padStart(2, '0');
}

/**
 * Build the §7.1 meta.json given a context. Pure function, no I/O —