Revision history for File-At

0.01  2025-11-09
    - Initial release.
    - Thin FFI bindings for the POSIX *at() filesystem syscalls.
    - File::At::Dir helper object and open_fd_at/open_fh_at helpers.
    - Example script eg/at_hardlink.pl demonstrating a quasi-recursive
      tree walker that replaces duplicate files with hard links.
