session.reclaimed now heals through markRuntimeGone before dropping cache. A 4001 on the visible session's dispatcher request asks for a durable resume. prompt.submit uses the window dispatcher so the turn lease survives the ACK, and a primary route no longer registers a phantom turn lease. Co-authored-by: Lester Liang <153183032+lesterlxt@users.noreply.github.com> Co-authored-by: wz-heng <68931789+wz-heng@users.noreply.github.com>