fix(backend): add session cache configuration and improve folder label retrieval logic

Author: Shadow243

config/app.php

@@ -434,7 +434,9 @@
     | 'cache_class' => env('CACHE_CLASS')
     */
 
+    'allow_session_cache' => env('ALLOW_SESSION_CACHE', false),
 
+    'cache_class' => env('CACHE_CLASS'),
     /*
     | -------------
     | Redis Support

modules/imap/handler_modules.php

@@ -565,6 +565,12 @@ public function process() {
 
                     $mailbox = Hm_IMAP_List::get_mailbox_without_connection($details);
                     $label = $mailbox->get_folder_name($folder);
+                    if(!$label) {
+                        $paths = explode("_", $path);
+                        $short_path = $paths[0] . "_" . $paths[1] . "_";
+                        $cached_folders = $this->cache->get('imap_folders_'.$short_path, true);
+                        $label = !empty($cached_folders[$folder]['name']) ? $cached_folders[$folder]['name'] : '';
+                    }
                     $title = array(strtoupper($details['type'] ?? 'IMAP'), $details['name'], $label);
                     if ($this->get('list_page', 0)) {
                         $title[] = sprintf('Page %d', $this->get('list_page', 0));