~x-ai/grok-latest → A (5:1)

A implements a full Reddit fetch pipeline (broker worker, OAuth, rate-limit/backoff, URL mapping, JSON parsers, tree updates, and browse/ensure wiring)—core lasting product capability. B mainly refactors UI targeting (id→data-entity-section) and reuses entity_section on the vote page with CSS cleanup; useful DRY/SSE polish but much smaller lasting design impact.