I've more or less taken care of the spam for now. Some nice tools exist. The torrent has slowed down to a slow trickle, and pages are being restored.
I've decided the gmail auth didn't really help that much so I've re-enabled local wiki accounts, so people can create those instead of being tied to gmail.
There's new restrictions in place, like using renocaptcha, needing a verified email account to create or edit pages, etc. Some extensions for spam filtering and cleanup were added as well.
I'm still volunteering to enable our github wiki and retire wiki.allegro.cc for good btw.
Hey, I'm all for it if you think its reasonable to limit people to github accounts, and you can import it all.
I'm also willing to let someone else take over the wiki hosting if they think they can do a better job.
append: if anyone wants to volunteer for wiki mod let me know.
append2: if anyone got blocked by accident, email me or contact me on #allegro@freenode . I sincerely apologise. If pages in the spam reports didn't immediately jump out as not spam, they got left checked as spam and purged and their user blocked.