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>

admin/templates/shop-order/order-details.php

@@ -160,7 +160,7 @@ $orderId = (int)($this -> order['id'] ?? 0);
         <tbody>
           <? if ( is_array( $this -> order[ 'products' ] ) ): foreach ( $this -> order[ 'products' ] as $product ):?>
           <?
-              if ( $id = \admin\factory\ShopProduct::get_product_parent_id( $product['product_id'] ) )
+              if ( $id = ( new \Domain\Product\ProductRepository( $GLOBALS['mdb'] ) )->getParentId( $product['product_id'] ) )
                 $product_id = $id;
               else
                 $product_id = $product['product_id'];