Enable KDE Connect and refresh dependencies

- Turn on KDE Connect for desktop and laptop configurations
- Add allowed TCP and UDP port ranges (1714‑1764) for KDE Connect
- Update flake.lock with newer revisions, hashes, and add secondary
  inputs
- Set nh program package explicitly
- Adjust GTK settings for dark theme handling
- Disable KDE Connect indicator in service config
- Refactor noctalia plugins to use a shared source URL, add kde‑connect
  plugin, bump version
- Add KDE Connect widget to the right bar
- Remove always_allow_tool_actions from Zed agent settings

modules/home/gtk.nix

@@ -4,11 +4,12 @@
       name = "Papirus-Dark";
       package = pkgs.papirus-icon-theme;
     };
-    gtk3.extraConfig = {
-      gtk-application-prefer-dark-theme = 1;
-    };
-    gtk4.extraConfig = {
-      gtk-application-prefer-dark-theme = 1;
+    gtk3.extraConfig.gtk-application-prefer-dark-theme = 1;
+    gtk4 = {
+      theme = null;
+      extraConfig = {
+        gtk-application-prefer-dark-theme = 1;
+      };
     };
   };
 }