Mastodawn

To block x.ai's crawler with Anubis:

- name: xai-crawler-and-asn
  action: DENY
  user_agent_regex: code-review-sourcing.*\+xai-research
  remote_addresses:
    - 69.12.56.0/21
- name: xai-crawler-user-agent
  action: DENY
  user_agent_regex: code-review-sourcing.*\+xai-research