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- Delete class.Log (unused), class.Mobile_Detect (outdated UA detection)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>

autoload/Domain/Newsletter/NewsletterRepository.php

@@ -44,7 +44,7 @@ class NewsletterRepository
     {
         $this->settingsRepository->updateSetting('newsletter_footer', (string)($values['newsletter_footer'] ?? ''));
         $this->settingsRepository->updateSetting('newsletter_header', (string)($values['newsletter_header'] ?? ''));
-        \S::delete_dir('../temp/');
+        \Shared\Helpers\Helpers::delete_dir('../temp/');
 
         return true;
     }
@@ -128,7 +128,7 @@ class NewsletterRepository
                 return null;
             }
 
-            \S::delete_dir('../temp/');
+            \Shared\Helpers\Helpers::delete_dir('../temp/');
             return (int)$this->db->id();
         }
 
@@ -148,7 +148,7 @@ class NewsletterRepository
             'id' => $templateId,
         ]);
 
-        \S::delete_dir('../temp/');
+        \Shared\Helpers\Helpers::delete_dir('../temp/');
         return $templateId;
     }
 
@@ -350,7 +350,7 @@ class NewsletterRepository
 
     public function signup(string $email, string $serverName, bool $ssl, array $settings): bool
     {
-        if (!\S::email_check($email)) {
+        if (!\Shared\Helpers\Helpers::email_check($email)) {
             return false;
         }
 
@@ -380,9 +380,9 @@ class NewsletterRepository
             $text
         );
 
-        $lang = \S::get_session('lang-' . \S::get_session('current-lang'));
+        $lang = \Shared\Helpers\Helpers::get_session('lang-' . \Shared\Helpers\Helpers::get_session('current-lang'));
         $subject = $lang['potwierdz-zapisanie-sie-do-newslettera'] ?? 'Newsletter';
-        \S::send_email($email, $subject, $text);
+        \Shared\Helpers\Helpers::send_email($email, $subject, $text);
 
         $this->db->insert('pp_newsletter', ['email' => $email, 'hash' => $hash, 'status' => 0]);
 
@@ -435,7 +435,7 @@ class NewsletterRepository
             $link = $base . "://" . $serverName . '/newsletter/unsubscribe/hash=' . $hash;
             $text = str_replace('[WYPISZ_SIE]', '<a href="' . $link . '">' . $unsubscribeLabel . '</a>', $text);
 
-            \S::send_email($row['email'], 'Newsletter ze strony: ' . $serverName, $text);
+            \Shared\Helpers\Helpers::send_email($row['email'], 'Newsletter ze strony: ' . $serverName, $text);
 
             $this->db->delete('pp_newsletter_send', ['id' => $row['id']]);
         }