install.sh at every baseline in smoketest/baselines clones from https://gitea.federated.computer/david/coredesktop.git, which wasn't in COREDESKTOP_URLS. So 30-upgrade-from-baseline installed today's real upstream (via Gitea's redirect) instead of the baseline, and failed when the old install.sh asked for files that have since gone. Add a test that every URL install.sh has ever cloned from is in the list. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>