Ideally something PauseAI-branded that can be added to the Figma.
The structure could be something eye-catching in large letters at the top, with some additional information beneath.
My go-to for very low-bandwidth communication (one short message without the chance for follow-up) is to point out that the most qualified experts in AI are worried. And/or that "AI is not made of code and we don't know why it works."