feat(BE-278): unrestrict feat warehouse purchase,adding purchase upload document

internal/modules/inventory/product-warehouses/repositories/product_warehouse.repository.go

@@ -199,6 +199,31 @@ func (r *ProductWarehouseRepositoryImpl) CleanupEmpty(ctx context.Context, affec
 		return nil
 	}
 
+	var inUseIDs []uint
+	if err := r.DB().WithContext(ctx).
+		Model(&entity.PurchaseItem{}).
+		Where("product_warehouse_id IN ?", emptyIDs).
+		Distinct().
+		Pluck("product_warehouse_id", &inUseIDs).Error; err != nil {
+		return err
+	}
+	if len(inUseIDs) > 0 {
+		inUse := make(map[uint]struct{}, len(inUseIDs))
+		for _, id := range inUseIDs {
+			inUse[id] = struct{}{}
+		}
+		filtered := make([]uint, 0, len(emptyIDs))
+		for _, id := range emptyIDs {
+			if _, exists := inUse[id]; !exists {
+				filtered = append(filtered, id)
+			}
+		}
+		emptyIDs = filtered
+	}
+	if len(emptyIDs) == 0 {
+		return nil
+	}
+
 	if err := r.DB().WithContext(ctx).
 		Model(&entity.PurchaseItem{}).
 		Where("product_warehouse_id IN ?", emptyIDs).