~x-ai/grok-latest → A (3:1)

A redesigns core pair selection with lasting ranking-hub behavior: bridge sub-priorities (merge established → attach isolate → isolate pair) and rank-adjacent zip refinement once the pool is connected, backed by targeted unit tests. B is valuable multi-layer input validation (reject 0 and >100 ratios in DSL, UI, and reducer) but is a narrower correctness guard than A’s algorithm change to the main voting loop.