Worked on the input-output-hk/haskell-language-server repository to address a nuanced issue in code completion for polymorphic records, focusing on scenarios where the record type is not explicitly known. Applied expertise in Haskell and IDE development to refine the completion engine, ensuring more accurate suggestions and reducing friction for developers working with polymorphic code paths. Enhanced the reliability of module-name resolution within completion prefixes, particularly when prefixes do not correspond to valid modules. Added targeted tests to safeguard against regressions in both direct and qualified record completions, demonstrating a methodical approach to testing and code quality within the Haskell ecosystem.