/yolo on a messaging platform only flipped tools.approval's in-memory
set, so any gateway restart (hermes update, crash, systemd restart,
Desktop reopen) silently put the chat back on manual approvals while
the user still believed YOLO was on.
The flag now lives on the chat's routing entry (SessionEntry.yolo,
persisted in gateway_routing like the /model override). /yolo writes it
before flipping the live flag, materializing the entry for a
first-message toggle; every turn re-arms the live flag from the entry it
already resolved; switch_session carries it across compression-tip and
binding repoints; the conversation-boundary security funnel (/new,
/resume, /branch, auto-reset) clears the persisted copy with the
in-memory one so a restart can never revive a bypass the user dropped.
Also corrects the security docs, which still claimed /yolo sets
HERMES_YOLO_MODE.
889eddcd86