Keycloak's pages are on another origin; a mancala_theme cookie reaches them on localhost's ports and, set for playmancala.app, on its auth subdomain.
Ceviz, Gece and Yeşim themes as CSS variables on <html>, Bricolage Grotesque, shared styles, and one header for every page with theme swatches, the account menu and the page's main action. The lobby, privacy page and status panels use the new look.
