ver. 0.283: Legacy class cleanup — S, Html, Email, Image, Log, Mobile_Detect → Shared namespace

- Migrate class.S → Shared\Helpers\Helpers (140+ files), remove 12 unused methods
- Migrate class.Html → Shared\Html\Html
- Migrate class.Email → Shared\Email\Email
- Migrate class.Image → Shared\Image\ImageManipulator
- Delete class.Log (unused), class.Mobile_Detect (outdated UA detection)
- Remove grid library loading from admin (index.php, ajax.php)
- Replace gridEdit usage in 10 admin templates with grid-edit-replacement.php
- Fix grid-edit-replacement.php AJAX to send values as JSON (grid.js compat)
- Remove mobile layout conditionals (m_html/m_css/m_js) from Site + LayoutsRepository
- Remove \Log::save_log() calls from OrderAdminService, ShopOrder, Order

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

admin/templates/pages/page-articles.php

@@ -21,21 +21,14 @@ ob_start();
 <?php
 $out = ob_get_clean();
 
-$grid = new \gridEdit;
-$grid->gdb_opt = $gdb;
-$grid->include_plugins = true;
-$grid->default_buttons = false;
-$grid->external_code = $out;
-$grid->title = 'Lista artyku&#322;&#243;w';
-$grid->buttons = [
-    [
-        'label' => 'Wstecz',
-        'url' => '/admin/pages/list/',
-        'icon' => 'fa-reply',
-        'class' => 'btn-dark',
-    ],
-];
-echo $grid->draw();
+$gridId = 'page-articles';
+$gridTitle = 'Lista artyku&#322;&#243;w';
+$gridSaveUrl = '';
+$gridBackUrl = '';
+$gridHidden = [];
+$gridContent = $out;
+$gridPersist = false;
+include __DIR__ . '/../components/grid-edit-replacement.php';
 ?>
 <script type="text/javascript" src="/libraries/jquery-nested-sortable/jquery.mjs.nestedSortable.js"></script>
 <script type="text/javascript">