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>

updates/changelog.php

@@ -1,3 +1,13 @@
+<b>ver. 0.294 - 18.02.2026</b><br />
+- UPDATE - usuniecie 12 legacy klas z autoload/shop/ (~2363 linii) — pelna migracja na Domain-Driven Architecture
+- UPDATE - class.Order.php: logika Apilo sync i email statusu przeniesiona do OrderAdminService
+- UPDATE - class.Product.php: ~20 metod przeniesionych do ProductRepository, calculate_basket_product_price do BasketCalculator
+- FIX - findCached(): stale Redis cache z obiektami \shop\Product powodowal ceny 0,00 zl
+- FIX - LayoutEngine: niekwalifikowane Product::getFromCache() resolwaly do \front\Product
+- FIX - szablony: konwersja object access na array access po migracji Product
+- UPDATE - AttributeRepository::getAttributeValueById() — dodano Redis cache
+- CLEANUP - katalog autoload/shop/ pusty, zero referencji \shop\ w aktywnym kodzie
+<hr>
 <b>ver. 0.293 - 17.02.2026</b><br />
 - UPDATE - front\controls\Site przemianowany na front\App (router, camelCase: checkUrlParams, pageTitle)
 - UPDATE - front\view\Site przemianowany na front\LayoutEngine (layout engine, camelCase: cookieInformation)