Jaladh Singhal enhanced the astronomy-commons/hats repository by overhauling its directory structure documentation, focusing on clarifying the organization and interaction of data within HEALPix-based partitioning. Using reStructuredText (rst) and leveraging strong documentation skills, Jaladh detailed the roles of Norder, Dir, and Npix directories, explaining their relationship to pixel numbers and data partitioning. This work established a clearer, version-controlled baseline for the project’s data layout, directly supporting faster onboarding and reducing miscommunication across teams. The depth of the documentation update improved maintainability and set the stage for future development, though the work was limited to documentation rather than code or bug fixes.