|mediawiki/extensions/CentralAuth||master||+9 -0||Add intro/summary text on top of Special:GlobalRenameUser|
I now discovered this task and indeed had the same idea and created the mentioned message this morning. Is this task still valid? I guess globalrenameuser-text is exactly what the requester of this ticket has been looking for. Or am I mistaken?
I also highly doubt there's a private repo involved, but indeed I could not find where the globalrenameuser-text interface message is used. That message isn't what we need anyway, rather we need to show a new message outside the FormSpecialPage, as @Glaisher mentioned. Perhaps Glaisher has insight into where this patch would be made? I'm not the best go-to for this extension or Special pages in general. Sorry!
I do however question this being Normal priority, as opposed to Low or event Lowest. The goal was to get Template:Globalrenamequeue on the page, and it is now there. The placement seems trivial and purely aesthetic, in my opinion.
@Glaisher: Would this need to happen in https://phabricator.wikimedia.org/diffusion/ECAU/browse/master/includes/specials/SpecialGlobalRenameUser.php ? Asking as you added the good first task tag, plus wondering how such an "intro" needs to look like.