update

routes/chapterRoutes.js

@@ -25,4 +25,11 @@ router.put('/:id', chapterController.updateChapter);
 // Delete chapter
 router.delete('/:id', chapterController.deleteChapter);
 
+// ============ Nested Lesson Routes ============
+// POST /api/chapters/:chapterId/lessons - Add lesson to chapter
+router.post('/:chapterId/lessons', chapterController.addLessonToChapter);
+
+// DELETE /api/chapters/:chapterId/lessons/:lessonId - Remove lesson from chapter
+router.delete('/:chapterId/lessons/:lessonId', chapterController.removeLessonFromChapter);
+
 module.exports = router;