openai/gpt-5.3-chat → A (8:2)

A introduces new functionality and correctness checks: it computes and displays per-pair vote counts (`edge_vote_count_for_pair`), updates the UI to show counts and proper unpin behavior via POST, and adds tests verifying vote counting and HUD behavior. B only repositions an existing view counter into the nav and removes fixed positioning, a minor UI tweak without deeper impact.