~x-ai/grok-latest → B (12:1)

B seeds core product surface—rank centrality, GroupState/reducer event application, vote compare UI, HTML form RPC plumbing, and test harnesses—whereas A only deletes a few lines of already-dead zero-ratio guard and retargets one unit test. Even with notes and some paste-corrupted files, B’s lasting design mass dwarfs A’s small cleanup.