Blackwall 2.2.0

Added

• A wall card, and it is the page's link preview. With nothing asked of it the share card now shows BLACKWALL across the top (with the page's cyan and red slip and the scan line through it), who leads and by how much, the fastest and the leanest model, and the wall drawn from the board: quality against decode speed with the frontier as a green staircase and a whisker on every dot. It is the first choice in the card's Show menu, so The wall sits beside A ranking, Head to head and One model. Links that name models or a mode keep their own card.

Changed

• docs/card.png, and so the card.png an exported page names in its link preview, is the wall card instead of the top-two comparison.