~x-ai/grok-latest → A (2:1)

A removes large duplicated copies of HTTP helpers, mock Google OAuth, assert/ANSI harness, cargo build, and server env from auth/grants/integration into shared common.bb and oauth.bb (plus complete-registration! and unified timeouts), which is lasting test design that prevents drift. B only formats already-available ConnectivityStats into pair CLI output with two unit tests—useful UX, but thinner than the cross-suite consolidation.