As an editor, I often need to mark specific articles or chapters for later review, revision, or coordination. Currently, there is no built-in way to tag or flag content privately for internal use. I'd like to request a feature that allows editors to: Add private tags or flags to articles/chapters (visible only to admins/editors) Filter and sort articles by these tags in the admin view Optionally, assign tags like "Needs Review", "Pending Approval", or custom ones This would significantly improve editorial workflows, content planning, and collaboration among internal teams.