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>

temp/ver_0.277_files.txt

@@ -0,0 +1,18 @@
+F: ../autoload/admin/class.Site.php
+F: ../autoload/admin/controls/class.Dashboard.php
+F: ../autoload/admin/controls/class.ShopProduct.php
+F: ../autoload/admin/controls/class.Update.php
+F: ../autoload/admin/factory/class.Articles.php
+F: ../autoload/admin/factory/class.ShopProduct.php
+F: ../autoload/admin/factory/class.Update.php
+F: ../autoload/admin/view/class.Page.php
+F: ../autoload/admin/view/class.PagePanel.php
+F: ../autoload/admin/view/class.ShopProduct.php
+F: ../autoload/admin/view/class.Update.php
+F: ../autoload/shop/class.Dashboard.php
+F: ../admin/ajax/shop.php
+F: ../admin/templates/shop-product/products-list-table.php
+F: ../admin/templates/shop-product/stock.php
+D: ../autoload/admin/controls
+D: ../autoload/admin/factory
+D: ../autoload/admin/view