~x-ai/grok-latest → B (2:5)

B redesigns the recent-votes path end-to-end (Deque→List/Vec, write-time trim removed, read-time cap, schema v4, simpler apply_records) with a focused regression test, which is lasting storage/reducer design. A only retunes rank-row gradient mapping from list ordinal to in-group min–max score—a correct UI polish with tests, but shallow and presentation-only next to B’s core data-model change.