For agents, on top of README.md, which they read first.

• Stay on the 8 by 8 face. A real font means a font engine and a font file in the Worker, and a Worker on the free plan gets 10 ms of CPU.
• WIDTH and HEIGHT are also the og:image size the page declares.
• A letter the face lacks is drawn as ?. It has ASCII and Latin-1.
• The logos come from pixel.rs's include_str! of the vendored SVGs and nowhere else, and the page embeds those same constants. Never redraw one by hand; pixel::Icon::parse refuses a file it cannot read exactly.
• The card for a question Jev cannot take says nothing Jev answered. It is chosen from archive::was_declined, and an answered question wins.