~x-ai/grok-latest → A (3:1)

A delivers two durable UX/design improvements: pairwise edge vote counts on garden rows (new helper, wiring, unit test) and correcting the pin HUD from a misleading item permalink into a real POST clear/unpin control with browser coverage and docs. B only extends the existing set_garden_pin clear flow so the ranked-list 📌 is clickable to unpin—valuable consistency, but a narrower follow-on change.