Worked on the Kilo-Org/kilocode repository to address cross-platform filesystem reliability, focusing on recursive directory creation issues specific to Windows environments. Delivered a targeted fix for EEXIST errors encountered during mkdir operations, particularly in scenarios involving OneDrive, Junctions, and WSL. The solution involved implementing defensive error handling in TypeScript, updating AppFileSystem and Encoding modules to ensure robust directory creation without affecting Linux or macOS behavior. Reinforced the changes with unit tests and updated internal documentation to clarify Windows-specific edge cases. This work improved the stability of setup and configuration flows, reducing runtime errors and enhancing the user experience on Windows.