StockEntry should be removed due to the fact that it will be only modified by the movement of the stock

MauiAppStock/Views/AddPiecePage.xaml.cs

@@ -35,9 +35,9 @@ namespace MauiAppStock.Views
                     Nom = NomEntry.Text,
                     Description = DescriptionEditor.Text,
                     Prix = prix,
-                    Stock = stock,
+                    Stock = 0
                     // Appareil = appareilPicked.Id, Exemple pour fournisseur
-                    Fournisseur = FournisseurEntry.Text
+                    //Fournisseur = FournisseurEntry.Text
                 };
                 await Database.AddPieceAsync(piece);
                 await Navigation.PopAsync();