Add autobox constraint to Nomad job

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

citti.nomad

@@ -17,6 +17,11 @@ job "citti" {
   group "app" {
     count = 1
 
+    constraint {
+      attribute = "${node.unique.name}"
+      value     = "autobox"
+    }
+
     network {
       port "http" {}
     }