I can't find any information on this anywhere and yet the question is simple.
Can I wrap storage-related actions in a TransactionScope such that e.g. if there is a rollback, the uploaded file is rolled back also?
If the native APIs don't do this already, is there a public implementation anywhere?
If you're referring to Table or Blob updates, there's no notion of explicit commit or rollback. When you make an API call (whether direct REST call or via PowerShell / CLI / SDK), it's just an action against storage, and it will either succeed or fail (although some actions take a while and the call may return before completion). There's no transaction scope wrapping this action. You'd need to take care of undoing your Table / Blob updates at an app level.