Function pickCodeExtension

src/lib/bundle.ts:331–338

(language: string, framework: string)

 * language, not the user-app code under test.
 */
export function pickCodeExtension(language: string, framework: string): string {
  if (language === 'python') return 'py';
  if (language === 'javascript') return 'js';
  if (language === 'typescript') return 'ts';
  // Fallback: framework-keyed default. pytest is python, playwright TS.
  if (framework === 'pytest') return 'py';
  return 'ts';
}

/**
 * Step filename per §7.2 — 1-based index, zero-padded to two digits