At login launchd starts juked before Wi-Fi is up. The engine reads the transport error from its token refresh as an expired refresh token and drops into interactive re-auth, opening a browser login whose 127.0.0.1 callback server dies with the process — so the redirect lands on a dead port. Wait for accounts.spotify.com (up to 60s) before handing the engine its cached token. install.sh also copied over ~/.local/bin/juked unconditionally, which put the drift back on any machine that had symlinked it at the checkout so script edits take effect without reinstalling. Leave a link the way we found it. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>