A resume racing a profile/connection swap can 404 on a backend that
does not own the session; the terminal-failure branch then dropped the
window to the blank new-chat route while the target session was alive.
goneSessionVerdict() now gates the draft fallback: a session created
this run, still listed on some profile, or looked up while a gateway
swap is in flight arms the bounded auto-retry latch instead of
discarding the route. Draft remains the calm-conditions path for
verifiably dead ids.
Teknium
d0b02efa9d