move all shell related configs into shell.nix

hosts/music-server/configuration.nix

@@ -59,11 +59,6 @@
 
   virtualisation.docker.enable = true;
   services.tailscale.enable = true;
-  services.rsync.enable = true;
-  programs.nix-ld.enable = true;
-  programs.neovim.enable = true;
-  programs.tmux.enable = true;
-  programs.bat.enable = true;
   programs.git = {
     enable = true;
     config = {

hosts/music-server/home-manager/home.nix

@@ -1,46 +1,13 @@
-{ pkgs, config, ... }:
 {
   imports = [
     ./beets.nix
-    ../../../modules/fish.nix
+    ../../../modules/shell.nix
   ];
 
   home.username = "user";
   home.homeDirectory = "/home/user";
 
-  programs.yazi.enable = true;
-  programs.yazi.enableFishIntegration = true;
-
-  programs.fzf.enable = true;
-  programs.fzf.enableFishIntegration = true;
-
-  programs.zoxide.enable = true;
-  programs.zoxide.enableFishIntegration = true;
-
-  programs.lazygit.enable = true;
-  programs.lazygit.enableFishIntegration = true;
-
   programs.gcc.enable = true;
 
-  programs.ripgrep.enable = true;
-
-  programs.eza = {
-    enable = true;
-    enableFishIntegration = true;
-    git = true;
-    icons = "always";
-    extraOptions = [
-      "-1"
-    ];
-  };
-
-  programs.btop.enable = true;
-  programs.fastfetch.enable = true;
-  programs.fd.enable = true;
-
-  home.sessionVariables = {
-    EDITOR = "nvim";
-  };
-
   home.stateVersion = "26.05";
 }