~anthropic/claude-sonnet-latest → B (6:4)

Side B fixes a real user-facing bug (vote polarity/highlighting) with targeted logic changes, new regression tests proving correctness (ratios_for_page orientation, winner_side, slider mapping, ranking invariant), plus supporting CSS/JS fixes—delivering concrete lasting value. Side A is a reasonable internal refactor (Deque->List) with a schema version bump and a test, but it's more of a data-structure churn/cleanup than a bugfix, and removing capacity enforcement on write shifts an invariant to read-time without clear necessity.