Worked on improving PATH resolution robustness in the pantsbuild/pants repository by addressing a crash that occurred when non-directory entries appeared in the system PATH during binary lookups. Developed a follow_symlinks mechanism that operates across both Rust and Python boundaries, updating the Vfs trait and Python API to handle symlinks and non-directory scenarios more predictably. Enhanced system programming reliability by ensuring ENOTDIR errors are treated as absent entries, reducing crash risk. Introduced comprehensive regression tests in Python to validate symlink and file component handling, resulting in a more stable developer experience and fewer outages when dealing with complex PATH configurations.