I want to share a topic filter that I came up with to show topics to add the fixed tag to. It’s as follows:
category:bug,ux -tag:fixed,completed group:staff github.com/discourse/discourse/pull
Essentially, it returns topics without the fixed and completed tags, in the Contribute > Bug and Contribute > UX categories that have a PR linked in the topic.
It’s not entirely foolproof, but it works quite well.