openai/gpt-chat-latest → A (4:1)

Side A makes a substantive persistence-model change by replacing the durable recent-vote deque with an append-only list, removing post-commit trimming, updating schema versioning, reconstructing only the newest capped window on read, and adding a regression test for the new query-time cap. Side B primarily fixes UI vote highlighting and gradient behavior with supporting tests; while useful, it is largely presentation logic and does not alter the project's core storage or data-handling design.