Extended mentions via activitypub

from meta: Hm. Wondering why activitypub creates users with a home here (at meta), when their comments come from a federated site.

I would expect the activitypub plugin to create proxy users with full Fediverse home address. For the account I am replying to, this should be https://meta.discourse.org/u/@toka@socialhub.activitypub.rocks instead of https://meta.discourse.org/u/toka. (@angus)