ver. 0.294: Remove all 12 legacy autoload/shop/ classes (~2363 lines)

Complete Domain-Driven Architecture migration:
- Phase 1-4: Transport, ProductSet, Coupon, Shop, Search, Basket,
  ProductCustomField, Category, ProductAttribute, Promotion
- Phase 5: Order (~562 lines) + Product (~952 lines)
- ~20 Product methods migrated to ProductRepository
- Apilo sync migrated to OrderAdminService
- Production hotfixes: stale Redis cache (prices 0.00), unqualified
  Product:: refs in LayoutEngine, object->array template conversion
- AttributeRepository::getAttributeValueById() Redis cache added

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

autoload/Shared/Helpers/Helpers.php

@@ -66,9 +66,9 @@ class Helpers
         // Wyczyść cache produktu dla wszystkich języków i permutacji
         $cacheHandler -> deletePattern( "shop\\product:$product_id:*" );
         // Wyczyść cache związane z opcjami ilościowymi
-        $cacheHandler -> deletePattern( "\\shop\\Product::get_product_permutation_quantity_options:$product_id:*" );
+        $cacheHandler -> deletePattern( "ProductRepository::getProductPermutationQuantityOptions:v2:$product_id:*" );
         // Wyczyść cache zestawów produktów
-        $cacheHandler -> deletePattern( "\\shop\\Product::product_sets_when_add_to_basket:$product_id" );
+        $cacheHandler -> deletePattern( "ProductRepository::productSetsWhenAddToBasket:$product_id" );
       }
       catch (\Exception $e)
       {
@@ -956,5 +956,20 @@ class Helpers
     }
     return false;
   }
+
+  public static function shortPrice( $price )
+  {
+    if ( self::isWholeNumber( $price ) )
+      $price = round( $price, 0 );
+    else
+      $price = self::decimal( $price );
+
+    return $price;
+  }
+
+  public static function isWholeNumber( $value )
+  {
+    return ( is_numeric( $value ) && ( round( $value, 3 ) == round( $value ) ) );
+  }
 }