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/front/Controllers/ShopClientController.php

@@ -140,7 +140,7 @@ class ShopClientController
         return \front\Views\ShopClient::clientOrders([
             'client' => $client,
             'orders' => $this->clientRepo->clientOrders((int)$client['id']),
-            'statuses' => \shop\Order::order_statuses(),
+            'statuses' => ( new \Domain\Order\OrderRepository( $GLOBALS['mdb'] ) )->orderStatuses(),
         ]);
     }