23b91cc451
The update-check stub returned a single release object, which was right for /releases/latest. The app now polls the releases list so a pre-release is still seen, so the fixture has to return an array or checkForUpdate bails and the release card never appears. Caught by frontend-e2e on the previous commit, which is the suite doing exactly its job: the only assertion that covers this path is report-failure.spec.mjs:98, and it went red immediately.