feat(vocab): add lesson and completed lesson vocab pool endpoints

- Implemented new endpoints in VocabController for retrieving vocab pools based on lessons and completed lessons.
- Updated vocabRouter to include routes for accessing lesson vocab pools and completed lesson vocab pools.
- Enhanced VocabService with methods to extract vocab from exercises and lesson didactics, improving vocabulary retrieval for users.
- Modified VocabPracticeDialog and VocabCourseView components to support new vocab pool functionalities, enhancing user experience in vocabulary practice.

backend/routers/vocabRouter.js

@@ -22,12 +22,14 @@ router.get('/languages/:languageId/search', vocabController.searchVocabs);
 router.get('/chapters/:chapterId', vocabController.getChapter);
 router.get('/chapters/:chapterId/vocabs', vocabController.listChapterVocabs);
 router.post('/chapters/:chapterId/vocabs', vocabController.addVocabToChapter);
+router.get('/lessons/:lessonId/vocab-pool', vocabController.getLessonVocabPool);
 
 // Courses
 router.post('/courses', vocabController.createCourse);
 router.get('/courses', vocabController.getCourses);
 router.get('/courses/my', vocabController.getMyCourses);
 router.post('/courses/find-by-code', vocabController.getCourseByShareCode);
+router.get('/courses/:courseId/completed-lesson-vocabs', vocabController.getCompletedLessonVocabPool);
 router.get('/courses/:courseId/distractor-pool', vocabController.getVocabDistractorPool);
 router.get('/courses/:courseId', vocabController.getCourse);
 router.put('/courses/:courseId', vocabController.updateCourse);
@@ -59,4 +61,3 @@ router.put('/grammar-exercises/:exerciseId', vocabController.updateGrammarExerci
 router.delete('/grammar-exercises/:exerciseId', vocabController.deleteGrammarExercise);
 
 export default router;
-