Add Thunderbird, cut down on swap usage to make hibernation more reliable

modules/desktop/default.nix

@@ -1,4 +1,4 @@
-{ inputs, ... }:
+{ inputs, pkgs, ... }:
 {
     imports = [
         ./tailscale.nix
@@ -11,6 +11,14 @@
         ./home
     ];
 
+    environment.systemPackages = with pkgs; [
+        neovide
+        featherpad
+        protonmail-desktop
+    ];
+
+    environment.variables.EDITOR = "neovide";
+
     catppuccin.enable = true;
     catppuccin.cache.enable = true;