feat: persist travel snapshots and refresh extended availability

src/Controller/Api/TravelController.php

@@ -114,7 +114,7 @@ class TravelController extends AbstractController
         bool $preferRemote = false,
     ): ?Travel {
         return match ($source) {
-            'local' => $this->travelDataService->getTravelDataFromXml($dateId, $hotelId),
+            'local' => $this->travelDataService->getTravelDataFromLocal($dateId, $hotelId),
             'remote' => $this->travelDataService->getTravelDataFromApi($dateId, $hotelId),
             default => $this->travelDataService->getTravelData($dateId, $hotelId, $preferRemote),
         };