refactor lot matching into shared module

internal/services/pricelist/service.go

@@ -10,6 +10,7 @@ import (
 	"git.mchus.pro/mchus/quoteforge/internal/models"
 	"git.mchus.pro/mchus/quoteforge/internal/repository"
 	"git.mchus.pro/mchus/quoteforge/internal/services/pricing"
+	"git.mchus.pro/mchus/quoteforge/internal/warehouse"
 	"gorm.io/gorm"
 )
 
@@ -132,6 +133,22 @@ func (s *Service) CreateForSourceWithProgress(createdBy, source string, sourceIt
 	}
 
 	items := make([]models.PricelistItem, 0)
+	if len(sourceItems) == 0 && source == string(models.PricelistSourceWarehouse) {
+		warehouseItems, err := warehouse.ComputePricelistItemsFromStockLog(s.db)
+		if err != nil {
+			_ = s.repo.Delete(pricelist.ID)
+			return nil, fmt.Errorf("building warehouse pricelist from stock_log: %w", err)
+		}
+		sourceItems = make([]CreateItemInput, 0, len(warehouseItems))
+		for _, item := range warehouseItems {
+			sourceItems = append(sourceItems, CreateItemInput{
+				LotName:     item.LotName,
+				Price:       item.Price,
+				PriceMethod: item.PriceMethod,
+			})
+		}
+	}
+
 	if len(sourceItems) > 0 {
 		items = make([]models.PricelistItem, 0, len(sourceItems))
 		for _, srcItem := range sourceItems {