Register the remaining YAML admin screens and the settings singleton
so a host can boot Posts, Categories, Tags, and Code journal. Posts
update and delete refuse other authors without access_other_posts.
Co-authored-by: Cursor <cursoragent@cursor.com>
Squash the remaining golem15_journal_* tables plus the backend_users
author slug so a host migrate matches the frozen PHP schema.
Co-authored-by: Cursor <cursoragent@cursor.com>