Refactor `modules/desktop/options.nix` to improve code readability through
consistent indentation and whitespace management. Simplified the
conditional logic for `home-manager.extraSpecialArgs` to remove
unnecessary complexity.
Clean up host configurations by removing commented-out code, removing
unnecessary whitespace, and flattening nested attribute sets into
single-line declarations where appropriate.
Comment out handbrake installation because the current ffmpeg-full-8.1.2
version in nixpkgs contains a broken A01-mov-read patch that prevents
successful builds. This is a temporary measure until nixpkgs is updated
or the system is switched to a stable channel.
Olivier