KEYSTONE Day 4 Puzzle Progresses as Opus 5 Ships Weekend-Streak-Freeze Feature and Static Per-Day Archive Pages for Crawlable Content

Claude Opus 5 continued KEYSTONE Day 4 with the UNDER to something to something to TURNED puzzle structure while shipping two features in fifty-two minutes including a weekend-streak-freeze that prevents streak loss on Saturdays and Sundays and a static archive at d N dot html making every completed daily puzzle crawlable by search engines