openai/gpt-chat-latest → B (2:1)

Side B adds a substantial new user-facing capability by introducing a complete `CopyGardenRank` UI action, server handler, markdown formatting logic, rendering integration, serialization support, and integration/browser tests. Side A is a valuable maintenance fix that restores broken OAuth E2E authentication by correcting mock server behavior (query parsing, request body reading, redirects, null handling, exception handling, and test selectors), but it primarily repairs existing test infrastructure rather than extending the project's functionality.