Gerenciar Follow-up

POST /backend/followup/configs

{
  "assistant_id": "uuid",
  "trigger_status_ids": ["uuid-status-1"],
  "steps": [
    {
      "interval": "PT30M",
      "prompt": "Mensagem amigável de follow-up"
    },
    {
      "interval": "PT2H",
      "prompt": "Ofereça uma demonstração do produto"
    }
  ],
  "official_steps": [
    {
      "channel_id": "uuid",
      "channel_name": "WhatsApp Business",
      "app_id": "gupshup_app_12345",
      "steps": [
        {
          "interval": "P1D",
          "template_name": "reengajamento_v1",
          "template_language": "pt_BR",
          "template_params": ["{{LEAD_FIRSTNAME}}"]
        }
      ]
    }
  ]
}

GET /backend/followup/configs/{id}

GET /backend/followup/configs/assistant/{assistantId}

GET /backend/followup/configs/tenant/{tenantId}

PUT /backend/followup/configs/{id}

{
  "trigger_status_ids": ["uuid-status-1", "uuid-status-2"],
  "steps": [...],
  "official_steps": [...],
  "is_active": false
}

DELETE /backend/followup/configs/{id}