The early-read script now also sends /api/sessions/<id> when ?c= carries a valid session id (same rule as parseSessionUrlQuery), next to the account. Only the home bootstrap takes it, bound to that id and once: the lookup for a conversation off the first page, or the landing fetchSessionDetail. 401/404/ error handling and notices are unchanged; a failed early read refetches. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>