{"ok":true,"service":"spreadfire-backend","heygenKeySet":true,"routes":["POST /api/avatar/upload   (multipart file -> {assetId,url})","POST /api/avatar/create   (multipart file+name -> consentUrl,groupId)","POST /api/avatar/create-from-url (json {name, footageUrl|assetId})","GET  /api/avatar/status?groupId=<id>"]}