openai/gpt-5.2-chat → A (5:1)

Side A adds substantive functionality: a new `edge_vote_count_for_pair` helper with tests, surfaces pairwise vote counts in the garden UI, converts the HUD pin link into a proper POST `set_garden_pin clear` action with supporting JS/CSS changes, and extends browser tests to verify unpin behavior. Side B only repositions the view counter into the top nav and removes fixed positioning in CSS to avoid overlap, a small layout tweak without deeper logic or tests.