Wikimedia Bugzilla is closed!

Currently the edits made by the extension are attributed to the pseudo-bot account, but the underlying CheckUser data seems to be appropriated from the user who is being welcomed, which pollutes the CU data, and is generally a bit confusing. Two solutions are possible, I think

1) The edits are not logged in the CheckUser table. Since the edits are made by a system process, we don't care what the CU data is at all (though that will be confusing for anyone who doesn't know it is not a "real" user)
2) Alternatively, the CU data can be forced to IP=127.0.0.1 and a user agent like "System process for [[mw:Extension:NewUser:Message]]"

CCing Siebrand, since he last worked on the extension.