const rows = $input.all().map((item) => item.json);
rows.sort((a, b) => Number(b.run_at || 0) - Number(a.run_at || 0));
const latest = rows[0] || null;

const painel = {
  gerado_em: new Date().toISOString(),
  ultima_execucao_shadow: latest,
  total_execucoes_recentes: rows.length,
};

return [{ json: painel }];