POST /api/auth/register

POST /api/auth/register
Content-Type: application/json

{
  "username": "example_user",
  "email": "user@example.com",
  "password": "a-strong-password"
}

{
  "user": {
    "id": "00000000-0000-0000-0000-000000000000",
    "username": "example_user",
    "email": "user@example.com"
  }
}

{ "error": "Invalid JSON body" }

{
  "error": "Validation failed",
  "details": {
    "fieldErrors": {
      "email": ["Invalid email"]
    },
    "formErrors": []
  }
}

{ "error": "A user with this email already exists" }

{ "error": "A user with this username already exists" }

{ "error": "Email or username already exists" }

curl -X POST https://probot.vercel.app/api/auth/register \
  -H 'Content-Type: application/json' \
  -d '{
    "username": "example_user",
    "email": "user@example.com",
    "password": "a-strong-password"
  }'