Enables programs._1password (CLI) and programs._1password-gui with
polkit authorization for user chexit. allowUnfree is already set,
so packages install without additional config.
https://claude.ai/code/session_01NS2hpapno51a1Ng7hWaQKy
Replace programs.zsh (powerlevel10k theme) with programs.fish and
starship prompt integration. Fish provides autosuggestions and syntax
highlighting out of the box, eliminating the need for separate plugins.
https://claude.ai/code/session_01NS2hpapno51a1Ng7hWaQKy