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/ajax/shop.php

@@ -1,60 +0,0 @@
-<?php
-if ( $a == 'cookie_categories' )
-{
-  $array = unserialize( $_COOKIE[ 'cookie_categories' ] );
-  
-  if ( $array[ \S::get( 'category_id' ) ] == 0 )
-    $array[ \S::get( 'category_id' ) ] = 1;
-  else
-    $array[ \S::get( 'category_id' ) ] = 0;
-  
-  $array = serialize( $array );
-  
-  setcookie( 'cookie_categories', $array, time() + 3600 * 24 * 365 );
-}
-
-if ( $a == 'save_categories_order' )
-{
-  $response = [ 'status' => 'error', 'msg' => 'Podczas zapisywania kolejności kategorii wystąpił błąd. Proszę spróbować ponownie.' ];
-
-  $categoryRepository = new \Domain\Category\CategoryRepository( $mdb );
-
-  if ( $categoryRepository->saveCategoriesOrder( \S::get( 'categories' ) ) )
-    $response = [ 'status' => 'ok' ];
-  
-  echo json_encode( $response );
-  exit;
-}
-
-if ( $a == 'product_file_delete' )
-{
-  $response = [ 'status' => 'error', 'msg' => 'Podczas usuwania załącznika wystąpił błąd. Proszę spróbować ponownie.' ];
-  
-  if ( \admin\factory\ShopProduct::delete_file( \S::get( 'file_id' ) ) )
-    $response = [ 'status' => 'ok' ];
-  
-  echo json_encode( $response );
-  exit;
-}
-
-if ( $a == 'product_file_name_change' )
-{
-  $response = [ 'status' => 'error', 'msg' => 'Podczas zmiany nazwy załącznika wystąpił błąd. Proszę spróbować ponownie.' ];
-  
-  if ( \admin\factory\ShopProduct::file_name_change( \S::get( 'file_id' ), \S::get( 'file_name' ) ) )
-    $response = [ 'status' => 'ok' ];
-  
-  echo json_encode( $response );
-  exit;
-}
-
-if ( $a == 'product_image_delete' )
-{
-  $response = [ 'status' => 'error', 'msg' => 'Podczas usuwania zdjecia wystąpił błąd. Proszę spróbować ponownie.' ];
-  
-  if ( \admin\factory\ShopProduct::delete_img( \S::get( 'image_id' ) ) )
-    $response = [ 'status' => 'ok' ];
-  
-  echo json_encode( $response );
-  exit;
-}