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/front/factory/class.Newsletter.php

@@ -39,8 +39,9 @@ class Newsletter
         $dates = explode( ' - ', $row['dates'] );
      
         $articles = [];
+        $articleRepository = new \Domain\Article\ArticleRepository( $mdb );
         if ( isset( $dates[0], $dates[1] ) )
-          $articles = \admin\factory\Articles::articles_by_date_add( $dates[0], $dates[1] );
+          $articles = $articleRepository->articlesByDateAdd( $dates[0], $dates[1] );
 
         $text = $previewRenderer -> render(
                   is_array( $articles ) ? $articles : [],