~x-ai/grok-latest → B (3:2)

B establishes lasting identity architecture: UUID as the sole principal, multi-provider OAuth linking (GitHub + Reddit) with conflict handling, private linked-provider UI, and correct in-batch trust-weight updates—foundational product infrastructure with tests/mocks. A is a strong simplification (replacing an unreliable ~1.8k-line keystroke graph and race plumbing with paste-and-go URL parse + redirect), but it mainly removes a failed navigation experiment rather than adding durable core capability.