feat: persist travel snapshots and refresh extended availability

composer.json

@@ -16,6 +16,7 @@
     "doctrine/orm": "^3.3",
     "easycorp/easyadmin-bundle": "^4.27",
     "fakerphp/faker": "^1.24",
+    "flagception/flagception-bundle": "^6.1",
     "league/flysystem-bundle": "^3.4",
     "league/flysystem-sftp-v3": "^3.29",
     "league/oauth2-server-bundle": "^1.0",