AGENTIC_NO_CAPTCHA_ON_ENTRY
A CAPTCHA on entry is a deliberate 'no agents' sign. That is a legitimate choice for a checkout; on a public landing page it costs you every agent-mediated visit.
Impact is importance multiplied by the confidence tier’s weight — SPECIFICATION 1.0, RESEARCH 0.7, EMERGING 0.3, EXPERIMENTAL 0.1. Two rules backed by the same class of evidence therefore always carry the same weight, which is what makes the score reproducible rather than hand-tuned.