{
  "title": "Rollout progresivo",
  "artifact": {
    "rollout": [
      {
        "stage": "shadow",
        "traffic": 0.0,
        "gate": "no_side_effects"
      },
      {
        "stage": "canary",
        "traffic": 0.05,
        "gate": "slo_and_eval_pass"
      },
      {
        "stage": "ramp",
        "traffic": 0.25,
        "gate": "no_p1_regression"
      },
      {
        "stage": "rollback",
        "traffic": 0.0,
        "gate": "known_good_version"
      }
    ]
  },
  "checks": [
    {
      "name": "shadow sin efecto",
      "passed": true,
      "detail": "Se observa antes de impactar."
    },
    {
      "name": "canary pequeño",
      "passed": true,
      "detail": "Exposición limitada."
    },
    {
      "name": "ramp con gate",
      "passed": true,
      "detail": "Subir tráfico exige evidencia."
    },
    {
      "name": "rollback definido",
      "passed": true,
      "detail": "Hay ruta de vuelta."
    }
  ],
  "status": "valid",
  "decision": "El cambio progresa por evidencia: shadow, canary, ramp y rollback tienen gates separados.",
  "chapter": "c07"
}