added OpenPGP tooling

nixos/home/life/default.nix

···
 
     # system
     btop
+
+    # safety and encryption
+    gpg-tui
+    pinentry-all
   ];
+
+  services.gpg-agent = {
+    enable = true;
+    enableNushellIntegration = true;
+    enableSshSupport = true;
+    extraConfig = ''
+      keyserver hkps://keys.openpgp.org
+    '';
+  };
 
   services.syncthing.enable = true;
 }

nixos/hosts/common.nix

···
 
   # Nix-ld
   programs.nix-ld.enable = true;
+
+  # GnuPG Agent
+  programs.gnupg.agent = {
+    enable = true;
+    enableSSHSupport = true;
+  };
+  services.pcscd.enable = true;
 }