ver. 0.282: Banners frontend migration, Cache cleanup, Shared\Cache namespace

- Banners frontend: front\Views\Banners (new), BannerRepository +2 frontend methods,
  front\view\Site przepięty, usunięte front\factory\Banners i front\view\Banners
- Cache cleanup: eliminacja legacy class.Cache.php (file-based cache),
  13 metod front\factory przepiętych z \Cache::fetch/store na CacheHandler
- Shared\Cache namespace: CacheHandler i RedisConnection przeniesione do Shared\Cache\,
  60 odwołań CacheHandler i 12 odwołań RedisConnection przepiętych,
  usunięte backward-compat wrappery class.CacheHandler.php i class.RedisConnection.php
- Naprawione rozbieżności kluczy cache (random_products, category_name)

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

autoload/front/factory/class.ShopAttribute.php

@@ -7,7 +7,7 @@ class ShopAttribute
   {
     global $mdb;
 
-    $cacheHandler = new \CacheHandler();
+    $cacheHandler = new \Shared\Cache\CacheHandler();
     $cacheKey = "\front\factory\ShopAttribute::value_details:$value_id:$lang_id";
 
     $objectData = $cacheHandler -> get( $cacheKey );
@@ -31,12 +31,20 @@ class ShopAttribute
   {
     global $mdb;
 
-    if ( !$attribute = \Cache::fetch( 'attribute_details_' . $attribute_id . '_' . $lang_id ) )
+    $cacheHandler = new \Shared\Cache\CacheHandler();
+    $cacheKey = 'attribute_details_' . $attribute_id . '_' . $lang_id;
+    $objectData = $cacheHandler->get( $cacheKey );
+
+    if ( !$objectData )
     {
       $attribute = $mdb -> get( 'pp_shop_attributes', '*', [ 'id' => (int)$attribute_id ] );
       $attribute['language'] = $mdb -> get( 'pp_shop_attributes_langs', [ 'lang_id', 'name' ], [ 'AND' => [ 'attribute_id' => (int)$attribute_id, 'lang_id' => $lang_id ] ] );
 
-      \Cache::store( 'attribute_details_' . $attribute_id . '_' . $lang_id, $attribute );
+      $cacheHandler->set( $cacheKey, $attribute );
+    }
+    else
+    {
+      return unserialize( $objectData );
     }
     return $attribute;
   }