switch frontend to real API instead of mocks

frontend/src/components/delivery/DeliveryForm.tsx

@@ -6,9 +6,10 @@ import { pickupLocationLabels } from '../../types';
 interface DeliveryFormProps {
   isOpen: boolean;
   onClose: () => void;
-  onSubmit: (delivery: Omit<Delivery, 'id' | 'createdAt' | 'updatedAt'>) => void;
+  onSubmit: (delivery: Omit<Delivery, 'id' | 'createdAt' | 'updatedAt'>) => void | Promise<void>;
   initialData?: Delivery | null;
   defaultDate?: string;
+  isSubmitting?: boolean;
 }
 
 const pickupOptions: { value: PickupLocation; label: string }[] = [
@@ -18,7 +19,7 @@ const pickupOptions: { value: PickupLocation; label: string }[] = [
   { value: 'galaktika', label: pickupLocationLabels.galaktika },
 ];
 
-export const DeliveryForm = ({ isOpen, onClose, onSubmit, initialData, defaultDate }: DeliveryFormProps) => {
+export const DeliveryForm = ({ isOpen, onClose, onSubmit, initialData, defaultDate, isSubmitting }: DeliveryFormProps) => {
   const [formData, setFormData] = useState({
     date: defaultDate || new Date().toLocaleDateString('ru-RU').split('.').join('-'),
     pickupLocation: 'warehouse' as PickupLocation,
@@ -85,11 +86,11 @@ export const DeliveryForm = ({ isOpen, onClose, onSubmit, initialData, defaultDa
       title={initialData ? 'Редактировать доставку' : 'Новая доставка'}
       footer={
         <>
-          <Button variant="ghost" onClick={onClose}>
+          <Button variant="ghost" onClick={onClose} disabled={isSubmitting}>
             Отмена
           </Button>
-          <Button type="submit" form="delivery-form">
-            {initialData ? 'Сохранить' : 'Создать'}
+          <Button type="submit" form="delivery-form" disabled={isSubmitting}>
+            {isSubmitting ? 'Сохранение...' : initialData ? 'Сохранить' : 'Создать'}
           </Button>
         </>
       }