fix: use keychain for ssh key management

programs/fish.nix

@@ -10,13 +10,9 @@
   hm.programs.fish = {
     enable = true;
 
-    interactiveShellInit = with pkgs; ''
-      if test -f ~/.ssh/id_ed25519
-        ssh-add -l | grep -q (ssh-keygen -lf ~/.ssh/id_ed25519) || ssh-add ~/.ssh/id_ed25519
-      end
-
-      ${lib.getExe starship} init fish | source
-      ${lib.getExe nix-your-shell} fish | source
+    interactiveShellInit = ''
+      ${lib.getExe pkgs.starship} init fish | source
+      ${lib.getExe pkgs.nix-your-shell} fish | source
     '';
 
     functions.fish_greeting = "";

programs/kde.nix

@@ -12,8 +12,6 @@
   };
 
   environment = {
-    variables.SSH_AUTH_SOCK = "/run/user/1000/ssh-agent";
-
     systemPackages = with pkgs; [
       flameshot
       gnome-calculator