Nothing in the chrome tells a player a challenge arrived, so the only way to find out is to open Play and look. A count on the account control is the cheap version — every page mounts it and it reads the session already — and it costs no label on a bar that has none to spare. Two decisions go with it: what the count counts once a challenge can be declined or expire, and whether the bar is only a pointer or is where you answer. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>