Worked on the hermit-os/kernel repository to establish foundational support for UNIX domain sockets and file-system interactions in Rust. Developed stub implementations that recognize the AF_UNIX address family, outline routing, and introduce necessary structures and enum variants, returning unimplemented errors to maintain build stability while full features are in progress. Scaffolded the fchdir system call as a stub, ensuring dependent code compiles and reducing integration risk for future development. Emphasized kernel development, networking, and system programming skills, with a focus on maintaining repository build-ability and clear commit traceability to support ongoing feature work and cross-module compatibility within the operating system.