curl --request GET \
  --url http://localhost:8080/api/phone-numbers/outbound-ready \
  --header 'X-API-KEY: <api-key>' \
  --header 'X-API-SECRET: <api-key>'

{
  "message": "Phone numbers retrieved successfully",
  "status": "success",
  "error": null,
  "data": {
    "organization_id": "org_123",
    "phone_numbers": [
      {
        "phone_number": "+14157774444",
        "phone_number_pretty": "+1 (415) 777-4444",
        "area_code": 415,
        "nickname": "Customer Service Line",
        "phone_number_type": "zudu-twilio",
        "inbound_agent_id": "agent_abc123",
        "outbound_agent_id": "agent_xyz789",
        "number_provider": "twilio",
        "outbound_trunk_id": "ST_4Xo2mZgQsfyQ",
        "created_at": "2024-01-15T10:30:00Z",
        "updated_at": "2024-01-15T10:30:00Z"
      }
    ],
    "returned_count": 1,
    "pagination": {
      "page": 0,
      "limit": 50,
      "total_pages": 1,
      "total_count": 1,
      "has_next": false,
      "has_previous": false
    }
  }
}