Over a two-month period, Milan Bouchet-Valat enhanced the JuliaSparse/SparseArrays.jl repository by clarifying and expanding documentation to accurately reflect vector support in sparse array operations, improving onboarding and reducing API misinterpretation. In parallel, Milan contributed to MilesCranmer/julia and JuliaLang/Pkg.jl by refactoring path management, removing hardcoded paths, and introducing flexible environment configuration using Julia and Makefile scripting. These changes improved build reliability and maintainability, notably through a Makefile fix for GPL library removal and adoption of Sys.STDLIB for standard library path access. The work demonstrated depth in system integration, build system management, and code refactoring across multiple repositories.