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.ShopTransport.php

@@ -13,7 +13,7 @@ class ShopTransport
   {
     global $mdb, $settings;
 
-    $cacheHandler = new \CacheHandler();
+    $cacheHandler = new \Shared\Cache\CacheHandler();
     $cacheKey = "\front\factory\ShopTransport::transport_methods";
 
     $objectData = $cacheHandler -> get( $cacheKey );
@@ -57,12 +57,20 @@ class ShopTransport
   {
       global $mdb;
 
-      if ( !$cost = \Cache::fetch( 'transport_cost_' . $transport_id ) )
+      $cacheHandler = new \Shared\Cache\CacheHandler();
+      $cacheKey = 'transport_cost_' . $transport_id;
+      $objectData = $cacheHandler->get( $cacheKey );
+
+      if ( !$objectData )
       {
         $repo = new \Domain\Transport\TransportRepository($mdb);
         $cost = $repo->getTransportCost($transport_id);
 
-        \Cache::store( 'transport_cost_' . $transport_id, $cost );
+        $cacheHandler->set( $cacheKey, $cost );
+      }
+      else
+      {
+        return unserialize( $objectData );
       }
       return $cost;
   }
@@ -71,12 +79,20 @@ class ShopTransport
   {
     global $mdb;
 
-    if ( !$transport = \Cache::fetch( 'transport' . $transport_id ) )
+    $cacheHandler = new \Shared\Cache\CacheHandler();
+    $cacheKey = 'transport' . $transport_id;
+    $objectData = $cacheHandler->get( $cacheKey );
+
+    if ( !$objectData )
     {
       $repo = new \Domain\Transport\TransportRepository($mdb);
       $transport = $repo->findActiveById($transport_id);
 
-      \Cache::store( 'transport' . $transport_id, $transport );
+      $cacheHandler->set( $cacheKey, $transport );
+    }
+    else
+    {
+      return unserialize( $objectData );
     }
     return $transport;
   }