fix(electra): configure wireless interface explicitly

Assisted-by: pi (gpt-5.6-luna)

hosts/ubuntu/electra/default.nix

@@ -7,13 +7,10 @@
 
   _module.args.systemManagerHostName = "electra";
   nixpkgs.hostPlatform = "x86_64-linux";
-
-  # Pinned rather than auto-detected: with an empty list the upstream module
-  # installs a udev rule that calls /run/current-system/systemd/bin/systemctl,
-  # a path that does not exist outside NixOS.
   networking.wireless = {
     # system-manager lacks the NixOS D-Bus module that installs its policy.
     dbusControlled = false;
+    # empty list requires udev rule for autodetection
     interfaces = ["wlp0s20f3"];
   };
 }