Reason
See T27482: Merge RenameUser into core.

(If we do not backport the change to 1.39 LTS, this should happen once 1.39 is EOL in November 2025)

To-do list

• This task
  • Add maintainers of that extension as subscribers to this task (if they have no apparent Phabricator account, notify them on-wiki or via email if possible and note it here). (irrelevant since this was merged into core rather than a standard archive and there's no clear maintainer anyway - the listed author has been gone for years)
  • Add Phabricator project MediaWiki-User-rename as a tag for this task, and remove MediaWiki-extensions-Other/Other-skins as appropriate.
• On-wiki documentation
  • Archive documentation on mediawiki.org (https://www.mediawiki.org/wiki/Extension:Renameuser): replace page contents with {{Archived extension|last revision id before archiving|task=T331218}}
  • Remove <translate> from the documentation page, visit Special:PageTranslation, and click "remove from translation" (if you don't have the translation administrator right, ask a user who does).
  • Update Wikidata item (https://www.wikidata.org/wiki/Q21678251) associated with documentation page
    • add statement Abandonware (Q281039) to instance of (P31) together with qualifier start time (P580) = the YYYY-MM-DD date that you decided to archive extension (generally per edit history)
    • add qualifier end time (P582) = the YYYY-MM-DD (same date as above) to instance of (P31) = MediaWiki extension (Q6805426)
• Phabricator
  • Mark all Phabricator tasks for the extension either Declined or Invalid. Add a comment pointing to this task when doing so for reference. (This component is now part of MediaWiki core; actionable Tasks should not be closed).
  • Archive Phabricator project MediaWiki-User-rename for the extension.
  • Edit Phabricator project MediaWiki-User-rename description for the extension with a link to this ticket.
• Translatewiki.net/translations
  • Remove from translatewiki.net (groups/MediaWiki/mediawiki-extensions.txt).
• Configuration/tests/integrations/etc.
  • Remove tests in integration/config (zuul/layout.yaml).
  • Remove manifest/other references from mediawiki/vagrant. - done in https://gerrit.wikimedia.org/r/c/mediawiki/vagrant/+/1118153
• Repositories
  • Empty repository, leaving only the README indicating the repo is archived, and referring to this task by URL.
  • Remove from mediawiki/extensions (along with in .gitmodules).
  • Mark the repository read-only in Gerrit (also edit description to prepend "[ARCHIVED]" and a reference to this task): (https://gerrit.wikimedia.org/r/admin/repos/mediawiki/extensions/Renameuser).
  • Archive the Diffusion repository for the extension: rEREN.
  • Delete the GitHub mirror: (https://github.com/wikimedia/mediawiki-extensions-Renameuser).