Replaces the data:-URL navigation (blocked by Chrome since v60 for
top-frame navigation) with a direct DOM-append of a full-screen
overlay onto the parent document. Uses z-index 2147483647 so it sits
above Streamlit's connection-error banner when the websocket drops.
Note: still doesn't fully suppress the connection-error banner in
testing — the next iteration will render the overlay through
Streamlit's own page rather than via a component iframe.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Michael
701108c9d5