Function writeMarker

scripts/test-state-hygiene.js:60–63

(filePath, ageMs)

const MINUTE = 60 * 1000;

function writeMarker(filePath, ageMs) {
  const timestamp = new Date(Date.now() - ageMs).toISOString();
  fs.writeFileSync(filePath, JSON.stringify({ category: 'test', timestamp }));
}

function makeLockdir(dirPath, ageMs) {
  fs.mkdirSync(dirPath, { recursive: true });