I am using a bot user for the CI workflow, which builds my source, uploads a zipped file and commits this file as a build artifact. My problem is that i am not able to clean up the uploaded files, because only the user who uploads the file has write permissions. But i am not able to login as bot user. So no one can delete those files anymore using the phabricator website? Additionally i found no script to delete files using arc or the conduit api. So am i right to assume, that uploaded files by a bot user are not deletable? What exactly is the desired workflow with automated builds providing files as artifacts, when i want to be able to delete those files later on?