curl -X POST https://api.rapidcall.ai/api/auth/register \
  -H "Content-Type: application/json" \
  -d '{
    "name": "John Smith",
    "email": "[email protected]",
    "password": "securepass123"
  }'

{
  "user": {
    "id": "usr_001",
    "name": "John Smith",
    "email": "[email protected]"
  },
  "token": "eyJhbGciOiJIUzI1NiIs...",
  "message": "Verification email sent."
}