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/admin/Controllers/ShopOrderController.php

@@ -167,7 +167,7 @@ class ShopOrderController
 
         $coupon = null;
         if (!empty($order) && !empty($order['coupon_id'])) {
-            $coupon = new \shop\Coupon((int)$order['coupon_id']);
+            $coupon = ( new \Domain\Coupon\CouponRepository( $GLOBALS['mdb'] ) )->find((int)$order['coupon_id']);
         }
 
         return \Shared\Tpl\Tpl::view('shop-order/order-details', [
@@ -191,7 +191,7 @@ class ShopOrderController
         return \Shared\Tpl\Tpl::view('shop-order/order-edit', [
             'order' => $this->service->details($orderId),
             'order_statuses' => $this->service->statuses(),
-            'transport' => \shop\Transport::transport_list(),
+            'transport' => ( new \Domain\Transport\TransportRepository( $GLOBALS['mdb'] ) )->allActive(),
             'payment_methods' => ( new \Domain\PaymentMethod\PaymentMethodRepository( $GLOBALS['mdb'] ) )->allActive(),
         ]);
     }