Worked on enhancing the polyapi/polyapi-python repository by strengthening the code generation pipeline for mixed TypeScript and Python environments. Focused on centralizing TypeScript type normalization to prevent crashes during code generation, with particular attention to handling nullable and Promise-based types. Improved schema and title normalization, ensuring that descriptions and return types are consistently formatted across language boundaries. Added and corrected unit tests to validate the robustness of these changes, resulting in improved reliability and developer productivity. Utilized full stack development skills with Python and TypeScript, and issued a version bump to reflect the increased stability and test coverage of the codebase.