[nix-book] Replace OpenVPN with WireGuard wg-quick

Remove services.openvpn.servers and add networking.wg-quick.interfaces.
Configure ogleNet to use /root/Oglehome-VPN-johno-nixbook.conf as the
WireGuard config file.

CLAUDE.md

@@ -137,3 +137,7 @@ This script pulls from the remote git repository and applies the configuration.
 - **SSH**: OpenSSH enabled on all configurations
 - **Garbage collection**: Automatic, deletes older than 10 days
 - **Unfree packages**: Allowed globally
+
+## Important Notes
+
+- **Sudo access**: Claude Code does not have sudo access. Ask the user to run elevated commands like `sudo nixos-rebuild switch`

machines/nix-book/configuration.nix

@@ -43,8 +43,11 @@
   # Enable networking
   networking.networkmanager.enable = true;
 
-  services.openvpn.servers = {
+  # WireGuard setup
-    ogleNet = { config = '' config /root/Oglehome-VPN-johno-nixbook.conf ''; };
+  networking.wg-quick.interfaces = {
+    ogleNet = {
+      configFile = "/root/Oglehome-VPN-johno-nixbook.conf";
+    };
   };
 
   hardware.graphics = {