Migrate from Heroku

1. Fetch Apps

GET /api/v1/migrations/heroku/apps?api_key=HEROKU_API_KEY

2. Analyze App

POST /api/v1/migrations/heroku/analyze
{
  "api_key": "...",
  "app_name": "my-heroku-app"
}

3. Execute Migration

POST /api/v1/migrations/heroku/migrate
{
  "api_key": "...",
  "app_name": "my-heroku-app",
  "server_id": "uuid"
}