Timo Bingmann
e5a41e58cd
Rename all shell script files to use .sh extensions for consistency and better editor support (pushover-send, split-1G, xz, zipdir). Update default.nix references to match the new filenames. Add a new ,yt-dlp script that runs yt-dlp from nixpkgs-unstable via `nix run`, so it's always up to date without needing to be in the system packages. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>