Okay, migration seems to be mostly done and mostly successful!

WHAT WORKS ALREADY:
* basic posting
* federation

WHAT IS STILL IN PROGRESS:
* some media files have not transferred yet
* full-text search: indexes need a rebuild
* sidekiq man is doing his best to catch up on posts
* streaming seems a bit weird, to be investigated

EVENTUALLY:
* backups are not working right now, will have to fix those up

ETERNALLY A MYSTERY:
* no idea if email works lol