- Broadcast GoalUpdated AP note after ReviewLogged so federated goal
progress reflects the new review count without requiring a manual goal edit
- Add attribution check in GoalObjectHandler::on_update (mirrors
review_handler) to prevent any remote actor from overwriting another's goal
- Implement on_actor_removed in GoalObjectHandler via new
RemoteGoalRepository::remove_all_by_actor — remote goals were never
cleaned up when an actor unfollowed or was deleted
- Add remove_all_by_actor to SQLite, Postgres, Noop, and test Panic impls