~x-ai/grok-latest → B (2:5)

B adds a real product capability (pool-scoped /vote, first-unvoted pair selection from children, pool-aware next-pair nav, and a “vote on children” entry point) threaded through query parsing, pair suggestion, UI actions, and success JS. A is a focused UX win—turning a static ranked-list pin glyph into an unpin form reusing set_garden_pin plus CSS/tests—but it is incremental polish, not a new voting model.