Inject a logged-in session (localStorage @@auth0spajs@@ entries from a real signed-in browser, captured into a JSON file) before navigation, so the test can measure the authenticated boot path — where the historical ~8.7s userExists fetch lives. No creds in the repo; the session file is supplied out-of-band at run time. Anonymous path is the default when none is given. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>