Gleb Hvosinskij expanded the Arduino Library Registry catalog by adding repository links for d9servo and d9dist, enhancing discoverability and integration readiness for developers. Working within the arduino/library-registry repository, Gleb focused on repository management and text-based configuration, updating repositories.txt to explicitly reference new libraries. This targeted feature reduced onboarding friction and accelerated library adoption by making integration points more transparent. Although the work was limited in scope, with one feature delivered and no bugs fixed, it addressed a clear need for improved catalog clarity. The technical approach centered on precise file updates and careful repository organization using text formats.