Reuse the nonempty NUL-free local path contract before normalization in artifact commands, auxiliary inputs, and output destinations. Empty selections now fail at parsing instead of selecting the working directory; explicit relative paths preserve their target.
Public CLI checks cover primary and auxiliary empty paths, exact relative-file digest, explicit current-directory selection, symlink parent semantics, and environment export inputs. Correct the desktop fixture to assert the existing CLI validation envelope.
morluto