On first boot the gateway token doesn't exist yet when nginx/landing are
first rendered, so the 'Open Gateway Web UI' button opens the Control UI
without a token and the user sees Unauthorized.
Fix: extract render logic into render_landing(), call it once at startup
(as before) and spawn a background poller that re-renders and HUPs nginx
as soon as the token appears in openclaw.json — no add-on restart needed.
Bumps add-on to 0.5.66.
root
72495984ad
