ver. 0.286: Layouts, Menu, Pages frontend migration to Domain

- Add 6 frontend methods to LayoutsRepository (Redis cache, 3-level fallback)
- Add 6 frontend methods to PagesRepository (Redis cache, recursive pages)
- Create front\Views\Menu (clean VIEW replacing front\view\Menu)
- Delete front\factory\Layouts, Menu, Pages + front\view\Menu + dead submenu.php
- Fix null $lang_id TypeError in check_url_params() (remove string type hint + ?? '')
- Optimize Helpers::htacces() from 3 layout calls to 1
- Tests: 470 OK, 1484 assertions (+16 new)

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

autoload/front/Views/Menu.php

@@ -0,0 +1,22 @@
+<?php
+namespace front\Views;
+
+class Menu
+{
+    public static function pages($pages, $level = 0, $current_page = 0)
+    {
+        $tpl = new \Shared\Tpl\Tpl;
+        $tpl->pages        = $pages;
+        $tpl->level         = $level;
+        $tpl->current_page  = $current_page;
+        return $tpl->render('menu/pages');
+    }
+
+    public static function menu($menu, $current_page)
+    {
+        $tpl = new \Shared\Tpl\Tpl;
+        $tpl->menu         = $menu;
+        $tpl->current_page = $current_page;
+        return $tpl->render('menu/menu');
+    }
+}