~x-ai/grok-latest → B (2:5)

B removes large stretches of duplicated HTTP client, mock-Google OAuth, assert/ANSI harness, cargo-build, and server-env code from auth/grants/integration into shared test.common and test.oauth (including complete-registration! and parameterized start-mock-google), which is lasting test-infrastructure design. A’s single tests.edn auto-discovery suite is a clean, useful config fix so new namespaces run without edits, but it is a much smaller change in scope and depth than B’s consolidation.