Introduce a compatibility delete route and handler for course sub-categories and cascade-delete their linked courses to support admin content cleanup flows.
Made-with: Cursor
Allow course creation payloads to include sub_category_id and persist it so newly created language paths appear in unified hierarchy views.
Made-with: Cursor
Handle missing course_sub_categories table by serving hierarchy data from legacy categories/courses queries so content pages keep loading until unified hierarchy migration is applied.
Made-with: Cursor
