The remote-gateway settings rendered the session-token box for every gateway
during the idle/probing window before the first /api/status probe lands,
because authMode defaults to 'token'. Gate both the OAuth sign-in button and
the token box behind an authResolved flag so neither renders until the probe
resolves the scheme (or a previously-saved remote config is being re-shown,
so re-opening settings doesn't flicker).
The gateway-side WS Origin fix that lets the packaged desktop (file:// origin)
connect to an OAuth-gated remote gateway landed separately in #37870; this
branch is now purely the desktop client + this UI fix.
bf590c81d0