Apply the patch, run `./bin/storage/upgrade`:
- no "Unknown Object" in any "Referenced Files" curtain of any object.
Have phd daemon running.
Upload file, attach the file to a task, delete the file from the web interface:
- no "Unknown Object" in "Referenced Files" curtain of that task.
- the query `SELECT * FROM file_attachment WHERE filePHID = '<file phid>'` returns empty result
Upload file, attach the file to a task, delete the task from the `./bin/remove destroy` workflow:
- the query `SELECT * FROM file_attachment WHERE objectPHID = '<task phid>'` returns empty result