Fix incorrect translation flash message keys

Author: JanMikes

src/Controller/Collections/AddPuzzleToCollectionController.php

@@ -183,7 +183,7 @@ public function __invoke(
             }
 
             // Non-Turbo request: redirect with flash message
-            $this->addFlash('success', $this->translator->trans('collections.puzzle_added'));
+            $this->addFlash('success', $this->translator->trans('collections.flash.puzzle_added'));
 
             return $this->redirectToRoute('puzzle_detail', ['puzzleId' => $puzzleId]);
         }

src/Controller/Collections/RemovePuzzleFromCollectionController.php

@@ -155,7 +155,7 @@ public function __invoke(
         }
 
         // Non-Turbo request: redirect with flash message
-        $this->addFlash('success', $this->translator->trans('collections.puzzle_removed'));
+        $this->addFlash('success', $this->translator->trans('collections.flash.puzzle_removed'));
 
         return $this->redirectToRoute('puzzle_detail', ['puzzleId' => $puzzleId]);
     }

src/Controller/CreateCollectionController.php

@@ -55,7 +55,7 @@ public function __invoke(Request $request, #[CurrentUser] User $user): Response
 
         // Check if user has active membership to create collections
         if ($player->activeMembership === false) {
-            $this->addFlash('info', $this->translator->trans('collections.membership_required'));
+            $this->addFlash('info', $this->translator->trans('collections.flash.membership_required'));
 
             return $this->redirectToRoute('puzzle_library', ['playerId' => $player->playerId]);
         }

src/Controller/EditCollectionItemCommentController.php

@@ -73,7 +73,7 @@ public function __invoke(Request $request, #[CurrentUser] User $user, string $co
                 ),
             );
 
-            $this->addFlash('success', $this->translator->trans('collections.comment_updated'));
+            $this->addFlash('success', $this->translator->trans('collections.flash.comment_updated'));
 
             // Redirect back to collection detail or system collection
             if ($collectionItem->collection !== null) {