fix(member-events): confirm actions reliably and normalize duplicate titles

src/Controller/Frontend/MemberEventsController.php

@@ -65,7 +65,14 @@ class MemberEventsController extends AbstractFrontendModuleController
                 if ('toggle_published' === $action) {
                     $this->eventRepository->togglePublished($eventId);
                 } elseif ('duplicate' === $action) {
-                    $this->eventRepository->duplicate($eventId);
+                    $newEventId = $this->eventRepository->duplicate($eventId);
+
+                    if ($newEventId > 0 && $editPage instanceof PageModel) {
+                        return new RedirectResponse($this->generateContentUrl($editPage, [
+                            'event' => (string) $newEventId,
+                            'ref' => base64_encode($backUrl),
+                        ]));
+                    }
                 } elseif ('delete' === $action) {
                     $this->eventRepository->delete($eventId);
                 }

src/Service/EventRepository.php

@@ -84,7 +84,8 @@ class EventRepository
         unset($row['id']);
 
         if (array_key_exists('title', $row)) {
-            $row['title'] = trim((string) $row['title'].' (Kopie)');
+            $normalizedTitle = html_entity_decode((string) $row['title'], ENT_QUOTES | ENT_HTML5, 'UTF-8');
+            $row['title'] = trim($normalizedTitle.' (Kopie)');
         }
 
         if (array_key_exists('alias', $row)) {