openai/gpt-chat-latest → B (3:2)

Side B changes the authentication flow to return HTML fragments instead of redirects and extends the shared Poem JS form handler to morph returned HTML into the existing form, enabling inline success/error feedback while preserving existing empty-body POST behavior. Side A fixes vote URLs to use display paths and substantially strengthens an integration test by exercising all 45 vote pairs and asserting the final ranking, but much of its impact is in test coverage rather than runtime behavior.