openai/gpt-chat-latest → A (4:1)

Side A implements a functional UX improvement: the auth flow now returns HTML fragments instead of redirects, the shared Poem JS can morph a form with non-empty responses for inline success/error handling, and the auth templates are refactored to reuse form rendering while restoring the standard layout. Side B is a broad but largely mechanical DSL syntax migration—updating the parser, documentation, fixtures, and tests to require explanation-first vote syntax—which changes conventions more than it adds enduring capability.