=== 1. Створити машину (Fleet) ===

curl -X POST http://localhost:8082/api/vehicles
-H "Content-Type: application/json"
-d '{ "registrationNumber": "BC9999TX", "type": "TRUCK", "capacity": 22.0, "available": true }'

=== 2. Створити відправлення (Shipment) ===

curl -X POST http://localhost:8081/api/shipments
-H "Content-Type: application/json"
-d '{ "origin": "Dnipro", "destination": "Uzhhorod", "status": "NEW" }'

=== 3. Створити інвойс (Billing) ===

(створюється для shipment з ID = 2)

curl -X POST http://localhost:8083/api/invoices/create-for-shipment/2
-H "Content-Type: application/json"
-d '{ "amount": 2500.00, "currency": "UAH" }'