function addNewManagementGroup()

in script.js [923:936]


  function addNewManagementGroup() {
    const newMg = {
      archetypes: ["empty"],
      display_name: "New Management Group",
      exists: false,
      id: "new-mg-" + Date.now(),
      parent_id: null
    };

    currentData.management_groups.push(newMg);
    renderManagementGroups();
    selectManagementGroup(newMg.id);
    updateJsonPreview();
  }