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/core/nh.nix

@@ -1,6 +1,11 @@
-{username, ...}: {
+{
+  username,
+  pkgs,
+  ...
+}: {
   programs.nh = {
     enable = true;
+    package = pkgs.nh;
     clean = {
       enable = true;
       extraArgs = "--keep-since 7d --keep 5";