chore: fix

backend/gestion/db/db_basket.go

@@ -256,6 +256,11 @@ func (d *Database) ClearBasket(username string) error {
 	})
 }
 
+// ClearBasketOnCheckout vide le panier après commande validée SANS restituer le stock.
+func (d *Database) ClearBasketOnCheckout(username string) error {
+	return d.GDB.Exec(`DELETE FROM baskets WHERE username = ?`, username).Error
+}
+
 // GetBasketTotal calcule le montant total du panier d'un utilisateur
 func (d *Database) GetBasketTotal(username string) (float64, error) {
 	var result struct {

backend/gestion/db/db_commands.go

@@ -231,14 +231,7 @@ func (d *Database) CreateCommandWithAddress(username, deliveryAddress string) (*
 			return nil, fmt.Errorf("erreur insertion items: %w", err)
 		}
 
-		result := d.GDB.Model(&models.Product{}).Where("id = ? AND stock >= ?", item.ProductID, item.Quantity).UpdateColumn("stock", gorm.Expr("stock - ?", item.Quantity))
-		if result.Error != nil {
-			log.Printf("⚠️ Erreur décrémentation stock produit %d: %v", item.ProductID, result.Error)
-			return nil, fmt.Errorf("erreur mise à jour stock: %w", result.Error)
-		}
-		if result.RowsAffected == 0 {
-			log.Printf("⚠️ [CHECKOUT] Stock déjà réservé pour produit %d (double réservation panier/checkout)", item.ProductID)
-		}
+		// Stock déjà déduit à l'ajout au panier — ne pas déduire une seconde fois ici.
 	}
 
 	if err := d.GDB.Delete(&models.Panier{}, "username = ?", username).Error; err != nil {
@@ -296,13 +289,17 @@ func (d *Database) GetAllCommands(status, username string) ([]map[string]any, er
 		ProposedAddress       *string   `gorm:"column:proposed_address"`
 		AddressProposalStatus string    `gorm:"column:address_proposal_status"`
 		ClientOrderNumber     int       `gorm:"column:client_order_number"`
+		ReferralUsed          float64   `gorm:"column:referral_used"`
+		CancelReason          string    `gorm:"column:cancel_reason"`
 	}
 
 	gdb := d.GDB.Table("commandes c").
 		Select(`c.id, c.username, c.status, c.adresse, c.total_prix,
 		        c.livreur_assign, c.created_at, c.updated_at,
 		        c.proposed_address, c.address_proposal_status,
-		        c.client_order_id AS client_order_number`)
+		        c.client_order_id AS client_order_number,
+		        COALESCE(c.referral_used, 0) AS referral_used,
+		        COALESCE(c.cancel_reason, '') AS cancel_reason`)
 
 	if status == "" {
 		gdb = gdb.Where("c.status IN ?", []string{"pending", "assigned", "en_route", "arrived", "livre"})
@@ -330,6 +327,8 @@ func (d *Database) GetAllCommands(status, username string) ([]map[string]any, er
 			"updated_at":              row.UpdatedAt,
 			"address_proposal_status": row.AddressProposalStatus,
 			"client_order_number":     row.ClientOrderNumber,
+			"referral_used":           row.ReferralUsed,
+			"cancel_reason":           row.CancelReason,
 		}
 
 		if row.LivreurAssign != nil {

backend/gestion/db/db_referral.go

@@ -48,6 +48,17 @@ func (d *Database) DebitReferralBalance(username string, amount float64) error {
 	})
 }
 
+func (d *Database) ResetClientReferralBalance(username string) error {
+	result := d.GDB.Model(&models.Client{}).Where("username = ?", username).Update("referral_balance", 0)
+	if result.Error != nil {
+		return result.Error
+	}
+	if result.RowsAffected == 0 {
+		return fmt.Errorf("client non trouvé")
+	}
+	return nil
+}
+
 func (d *Database) UseClientReferralBalance(tx *gorm.DB, username string, amount float64) error {
 	if amount <= 0 {
 		return nil