Codify the new check surfaced this run: README ![beta] badges in the Hot
table should still match the upstream docs page banner (research preview,
experimental, env-var gated). Origin: workflow-concepts-agent flagged
Routines, No Flicker Mode, Computer Use, and Code Review as candidates;
re-verification confirmed all four still legitimately carry beta status,
but the drift type wasn't covered by existing description-currency rules.
Co-Authored-By: Claude <noreply@anthropic.com>