@kraft: You can use your own WordPress using the Friends plugin and the beta version of the ActivityPub plugin: https://github.com/pfefferle/wordpress-activitypub/pull/172. Granted, not as good as an experience as your own instance yet but working on it.
Checking out a Github Pull Request on the command line
Loving this alias (requires brew install gh):
pr() {
git fetch
gh pr checkout $*
}It will switch to the right git branch based on the PR number like this: pr 45 will switch to the branch of pull request 45 of that github repo