ver. 0.277: ShopProduct factory, Dashboard, Update migration, legacy cleanup, admin\App

- ShopProduct factory: full migration (~40 ProductRepository methods, ~30 controller actions)
- Dashboard: Domain+DI migration (DashboardRepository + DashboardController)
- Update: Domain+DI migration (UpdateRepository + UpdateController, template rewrite)
- Renamed admin\Site to admin\App, removed dead fallback routing
- Removed all legacy folders: admin/controls, admin/factory, admin/view
- Newsletter: switched from admin\factory\Articles to ArticleRepository
- 414 tests, 1335 assertions passing

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

autoload/admin/Controllers/ProductArchiveController.php

@@ -60,7 +60,7 @@ class ProductArchiveController
                 $imageSrc = '/' . ltrim($imageSrc, '/');
             }
 
-            $categories = trim((string)\admin\factory\ShopProduct::product_categories($id));
+            $categories = trim((string)$this->repository->productCategoriesText($id));
             $categoriesHtml = '';
             if ($categories !== '') {
                 $categoriesHtml = '<small class="text-muted product-categories">'