Write ~/.local/share/nvim_color_scheme from the same macOS Appearance probe as Alacritty; trim the nvim theme line read for robustness.
Made-with: Cursor
- Remove trailing whitespaces from all .nix files
- Remove trailing whitespaces from shell scripts
- Remove trailing whitespaces from README files
- Improves code consistency and follows best practices
- wrap Neovim module in `lib.mkIf pkgs.stdenv.isLinux` (no-op on macOS)
- add `lib` to module args
- fix Lua message var: use `config_file` instead of undefined `file`
- keep existing plugins and customRC on Linux unchanged
