{
  "type": "text",
  "key": "app_ui_pack_default",
  "constant": "APP_UI_PACK_DEFAULT",
  "description": "Active UI pack id for layout takeovers (empty = none, or pluginId:packId)",
  "required": false,
  "placeholder": "",
  "validation": "nullable|string|max:255",
  "options": [],
  "category": "app",
  "sensitive": false
}