~x-ai/grok-latest → A (2:1)

A fixes core vote/ranking UI correctness (per-group gradients, center-anchored winner fill, ratio→slider polarity) and locks it in with polarity and rank-style tests, replacing mismatched history bars with HUD-consistent sliders. B is a clean but narrower auth UX change (fragments + poem innerHTML morph instead of redirects) that mostly refactors the choose-username path without comparable invariant fixes.