=== Test de création de facture Pennylane pour Regalia ===

API: https://app.pennylane.com/api/external/v2

- Client: Elevo (ID 145351447)
- Période: Juillet 2025
- Quantité: 10 kg
- PU HT: 35.75 €

Payload envoyé:
{
    "customer_id": 145351447,
    "date": "2025-07-31",
    "deadline": "2025-07-31",
    "draft": true,
    "currency": "EUR",
    "language": "fr_FR",
    "pdf_description": "Période : Juillet 2025",
    "invoice_lines": [
        {
            "label": "Café supplémentaire",
            "quantity": 10,
            "unit": "kg",
            "raw_currency_unit_price": "35.75",
            "vat_rate": "FR_200"
        }
    ]
}

Test de connexion à /draft_invoices...
Statut test connexion: 200
✅ Connexion OK

Envoi à /customer_invoices (draft=true)...
Statut: 404
❌ Échec (404)
{
    "status": 404,
    "error": "Couldn't find customer with 'id'=145351447"
}

=== Fin du test ===