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>

templates/shop-client/client-orders.php

@@ -9,7 +9,7 @@
   <? if ( is_array( $this -> orders ) ): foreach ( $this -> orders as $order ):?>
     <?= \Shared\Tpl\Tpl::view( 'shop-order/order-simple', [
           'order' => $order,
-          'statuses' => \shop\Order::order_statuses()
+          'statuses' => ( new \Domain\Order\OrderRepository( $GLOBALS['mdb'] ) )->orderStatuses()
         ] );?>
   <? endforeach; endif;?>
 </div>