openai/gpt-chat-latest → A (4:1)

Side A fixes a concrete security issue by introducing HTML sanitization with the `ammonia` library before rendering untrusted Reddit `body_html`, replacing direct `PreEscaped(body)` output with `entity_body_html(body)` and adding tests that verify scripts and event handlers are stripped while benign markup is preserved. Side B adds a substantial new voting UI, pair-selection logic, and refactoring, but it is largely feature work and even continues rendering `body_html` with `PreEscaped` in the new vote comparison page, whereas Side A provides a focused, lasting security improvement that protects all affected rendering paths.