b087a63b56
- MediaAsset model with file metadata and AV scan status tracking - ContentBlock model (richtext/image/video/embed/download) with ordered blocks per page and unique constraint on (page, order) - CourseTheme one-to-one per course with primary/secondary color and logo - validate_upload/save_upload helpers with extension and size enforcement - scan_media_asset_task Celery stub (marks clean; replace with ClamAV) - REST API: media upload, page content blocks CRUD, block patch/delete - Admin registrations for all three models - Factory-boy factories and pytest test suite for views, upload, and task Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>