Added better handling for "reference" row data

main.py

@@ -63,9 +63,8 @@ class ChampLibreRequest(BaseModel):
 class DevisRequest(BaseModel):
     client_id: str
     date_devis: Optional[date] = None
-    lignes: List[
-        Dict
-    ]  # Format: {article_code, quantite, prix_unitaire_ht, remise_pourcentage}
+    reference: Optional[str] = None
+    lignes: List[Dict]
 
 
 class TransformationRequest(BaseModel):
@@ -514,6 +513,7 @@ def creer_devis(req: DevisRequest):
         devis_data = {
             "client": {"code": req.client_id, "intitule": ""},
             "date_devis": req.date_devis or date.today(),
+            "reference": req.reference,
             "lignes": req.lignes,
         }