refactor: flake dir -> outputs/sys -> nixos

nixos/modules/base/networking/resolved.nix

@@ -0,0 +1,19 @@
+{ lib, config, ... }:
+
+let
+  inherit (lib) mkIf;
+  host = config.ooknet.host;
+in
+
+{
+  config = mkIf (host.type != "phone") {
+    services.resolved = {
+      enable = true;
+      fallbackDns = ["9.9.9.9"];
+      # allow-downgrade is vulnerable to downgrade attacks
+      extraConfig = ''
+         DNSOverTLS=yes # or allow-downgrade
+      '';
+    };
+  };
+}