~x-ai/grok-latest → B (1:3)

Side B is a precise production bugfix: it defines the missing GITHUB_API_BASE_URL used by the OAuth callback, eliminating a NameError that would break GitHub login. Side A’s huge diff is mostly deleting a leftover monolith and reshuffling the same forum HTML into forum/*—useful module hygiene, but largely move/churn rather than new behavior or a targeted correctness fix.