Fetch the Nitro client iframe with high priority so the browser starts the game document before competing resources, and replace the bare /client spinner with a branded boot screen. Preconnect and eager loading were already in place; typing support for the iframe fetchPriority prop is added in a React type augmentation. Rework the register terms block into a single clickable accept control with a custom check state, error shake and inline hint, and dim the submit button until the terms are accepted. The register page gets labeled sections (account details / credentials), a corrected banner overlay, translated show/hide toggles and a captcha slot that reserves height to avoid layout shifts. English is the source of truth; other locales fall back to it.