Swap the two "Free and open source" / "Community driven" text cards on the
start page for the intro-video thumbnail with a play badge; clicking it opens
the video in the system browser (new Message::OpenUrl → sys::open_url). The
bundled thumbnail Handle is built once via OnceLock — Handle::from_bytes mints a
fresh unique id per call, so rebuilding it per view re-decoded and re-uploaded
the JPEG every frame and the image only appeared after a long delay.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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