Undo should reverse the action you just took, not quietly re-file the task somewhere else.
- An In Progress task returns to In Progress after Archive Undo.
- The task keeps its original order, so the same neighboring tasks remain above and below it when they still exist.
- Priority, Inbox, Today, Deferred, reminder, and return-time state are restored from the same pre-archive snapshot.
- The restored state is saved through the ordinary durable to-do sync path.