feat(pos): enhance product kit price handling and UI interaction

- Updated price aggregation logic in update_product_kit to include unit prices.
- Improved terminal.js to allow inline editing of product prices in the kit.
- Added parsePrice function for consistent price parsing across the application.
- Ensured that the correct price is saved when creating or updating product kits.

myproject/pos/views.py

@@ -1371,12 +1371,19 @@ def update_product_kit(request, kit_id):
         if len(products) != len(product_ids):
             return JsonResponse({'success': False, 'error': 'Некоторые товары не найдены'}, status=400)
         
-        # Агрегируем количества
+        # Агрегируем количества и цены
         aggregated_items = {}
         for item in items:
             product_id = item['product_id']
             quantity = Decimal(str(item['quantity']))
-            aggregated_items[product_id] = aggregated_items.get(product_id, Decimal('0')) + quantity
+            unit_price = item.get('unit_price')
+            if product_id in aggregated_items:
+                aggregated_items[product_id]['quantity'] += quantity
+            else:
+                aggregated_items[product_id] = {
+                    'quantity': quantity,
+                    'unit_price': Decimal(str(unit_price)) if unit_price is not None else None
+                }
         
         with transaction.atomic():
             # Получаем старый состав для сравнения
@@ -1397,7 +1404,7 @@ def update_product_kit(request, kit_id):
             
             for product_id in all_product_ids:
                 old_qty = old_items.get(product_id, Decimal('0'))
-                new_qty = aggregated_items.get(product_id, Decimal('0'))
+                new_qty = aggregated_items.get(product_id, {}).get('quantity', Decimal('0'))
                 diff = new_qty - old_qty
                 
                 if diff > 0 and showcase:
@@ -1436,13 +1443,15 @@ def update_product_kit(request, kit_id):
             
             # Обновляем состав
             kit.kit_items.all().delete()
-            for product_id, quantity in aggregated_items.items():
+            for product_id, item_data in aggregated_items.items():
                 product = products[product_id]
+                # Используем переданную цену, если есть, иначе актуальную из каталога
+                final_price = item_data['unit_price'] if item_data['unit_price'] is not None else product.actual_price
                 KitItem.objects.create(
                     kit=kit,
                     product=product,
-                    quantity=quantity,
-                    unit_price=product.actual_price  # Фиксируем актуальную цену
+                    quantity=item_data['quantity'],
+                    unit_price=final_price
                 )
             
             kit.recalculate_base_price()