nrec-nixos01: add Forgejo with Caddy reverse proxy

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

hosts/nrec-nixos01/configuration.nix

@@ -53,6 +53,7 @@
   networking.firewall.allowedTCPPorts = [
     22
     80
+    443
   ];
 
   nix.settings.substituters = [
@@ -64,9 +65,9 @@
 
   services.caddy = {
     enable = true;
-    virtualHosts.":80" = {
+    virtualHosts."nrec-nixos01.t-juice.club" = {
       extraConfig = ''
-        respond "Hello from nrec-nixos01"
+        reverse_proxy 127.0.0.1:3000
       '';
     };
   };