curl --request POST \
  --url https://backend.testeswaffle.org/streaks/missions/complete \
  --header 'Content-Type: application/json' \
  --data '{
    "email": "leitor@exemplo.com",
    "daysToMaintain": 30
  }'

{
  "success": true,
  "message": "Missão completada com sucesso! Parabéns!",
  "data": {
    "missionId": "mission_30days_123",
    "email": "leitor@exemplo.com",
    "daysToMaintain": 30,
    "completedAt": "2024-01-20T17:00:00Z",
    "gift": "Camiseta oficial do the news",
    "currentStreak": 30
  }
}