Fixed ActivityPub follower fanout for published posts. The earlier Mastodon follow fix handled Accept delivery, but post delivery to followers still used Fedify's default #main-key sender path. Slugkit now signs follower fanout with the Fedify 2 multikey id Mastodon expects, so new posts appear on the Mastodon profile after publishing.

Slugkit@slugarticle

How to Generate a Slugkit Website with the slug CLI
Use the slug CLI to create a standalone Slugkit-compatible website from the template, run it locally, connect the CLI, and keep compatibility intact as you customize it.
