Function formatTime

frontend/tests/app.unit.test.js:51–57

* Format simulation seconds to "HH:MM:SS". * Mirrors app.js `methods.formatTime`.

(seconds)

 * Mirrors app.js `methods.formatTime`.
 */
function formatTime(seconds) {
  const total = Math.max(0, Math.floor(Number(seconds || 0)));
  const hours = Math.floor(total / 3600);
  const minutes = Math.floor((total % 3600) / 60);
  const secs = total % 60;
  return [hours, minutes, secs].map((part) => String(part).padStart(2, '0')).join(':');
}

/**
 * Build utilization row array from resource_status.summary.