openai/gpt-5.2-chat → B (1:6)

Side B makes widespread improvements across many files: resolving clippy warnings, refining pattern matches, simplifying code, adding a missing test annotation, introducing a type alias, cleaning up unused variables, and improving helper modules. These changes enhance overall code quality and maintainability across the workspace. In contrast, Side A is a small, targeted fix adding a single environment variable to prevent a NameError. While useful, its scope and impact are much narrower.