Worked on targeted code quality improvements for the allenai/rslearn repository, focusing on enhancing the reliability and maintainability of core components. Introduced advanced type hinting and overloads to the PatchPredictionMerger class, supporting both list-based and NumPy array inputs while clarifying input and output contracts. Applied automated code formatting using ruff-format to standardize method signatures in prediction_writer.py, ensuring stylistic consistency without altering functionality. Leveraged Python and type hinting expertise to align typing and formatting practices across the codebase, reducing the risk of runtime type errors and enabling safer integration with downstream machine learning pipelines. No bugs were reported or fixed.