As a Jira user,
I want to see the Sprint Goal in my Burnup Report or any other report,
So that I am reminded what the Sprint Goal was after the Sprint is closed.
It's very simple: When starting a Sprint, there is a field for the Sprint Goal. During the Sprint, this Sprint Goal is still visible on the Board.
This way, if one closes the Board, the Sprint Goal is still visible to look back on, whenever somebody wants to check up on it.
Example I shared in a next-gen board: IMAGE