During June 2025, Jean-Philippe Poiré focused on enhancing Agda’s type-checking reliability within the agda/agda repository. He addressed a nuanced bug in the fitsIn function, refining how polarity annotations are handled when the --without-K option is enabled. By ensuring polarity checks are bypassed in these cases, he reduced the risk of incorrect type judgments in edge scenarios. His work included adding regression tests to verify the combined behavior of the --polarity and --without-K flags, improving test coverage and reliability. This contribution, leveraging Haskell and expertise in compiler development and type checking, laid groundwork for safer future refactoring.