test(reverse-proxy): add neogaia hello route

hosts/neogaia/default.nix

@@ -40,6 +40,28 @@
 
   modules.toolkit.enable = true;
 
+  modules.reverse-proxy.routes.neogaia-hello = {
+    host = "neogaia-hello.alexion.dev";
+    backend = "http://10.23.50.146:8080";
+    tls = false;
+  };
+
+  networking.firewall.allowedTCPPorts = [ 8080 ];
+
+  services.nginx = {
+    enable = true;
+    virtualHosts."neogaia-hello.local" = {
+      listen = [
+        {
+          addr = "0.0.0.0";
+          port = 8080;
+        }
+      ];
+      extraConfig = "default_type text/plain;";
+      locations."/".return = "200 'hello from neogaia via the fleet route registry\\n'";
+    };
+  };
+
   # The walking-skeleton guest, enabled like any module: proves the guest path
   # end to end through this host's `nix flake check`.
   # Modest caps keep the skeleton guest from starving the laptop.