Remove description fields from course, unit, and module create/edit dialogs. Add unit sort order on create, lesson publish status and sort order, video duration on lesson cards, and personas API integration for Learn English practice flows.
Move Manage Question Types to the new content hub, add Reorder Content page with hierarchy drag-and-drop, shared practice review UI, module practice cards, and publish-practice controls on course listings.
Co-authored-by: Cursor <cursoragent@cursor.com>
