LMS / Course System:
- Course → Module → Lesson hierarchy (any user can create)
- Lesson types: text, video (Vimeo/YouTube/local), document, quiz, live_session
- Video provider auto-detection from URL
- BBB API integration (create/join meetings) with env config
- Course enrollment with per-lesson progress tracking
- AI content generation/refinement for text lessons
- Draft/published/archived status workflow
- Subscription gate placeholder (requires_subscription flag)
- Thumbnail upload support
- Module/lesson reorder with up/down controls
User Quiz Creation:
- Any user can create quizzes from question bank (was moderator-only)
- User quizzes: is_published=0, is_shared=0 (private by default)
- Fixed section_id fallback: None instead of hardcoded 1
Manual Question Creation:
- POST /questions/create endpoint for manual MCQ entry
- CreateQuestionModal on QuestionBankPage with options, radio for correct answer
- Auto-generates embedding on creation
Frontend:
- CoursesPage: Browse/My Courses/Created tabs with search and pagination
- CourseDetailPage: Student view with module accordion, lesson viewer, progress
- CourseEditorPage: Full course builder with AI generate, question bank browser
- Courses link in Navbar
- Create Question button on Question Bank (available to all users)
Backend:
- 5 new tables: courses, course_modules, course_lessons, course_enrollments, course_lesson_progress
- Course model + schemas + router (22 endpoints)
- BBB_SERVER_URL + BBB_SECRET config
- Updated CLAUDE.md with LMS documentation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- FastAPI backend with JWT auth, roles (admin/moderator/user)
- PDF upload (up to 500MB) with streaming, PyMuPDF text extraction
- ChromaDB vectorization per page with metadata
- LiteLLM AI question extraction from PDF (not generation)
- Image extraction from PDF pages, graceful fallback
- Quiz modes: timed (countdown timer) + learning (answers shown inline)
- Page-by-page question navigation with dot navigator
- TTS endpoint using LiteLLM (Google Vertex / OpenAI voices)
- Admin dashboard: AI model management per task, user role management
- Moderator role: upload PDFs, create sections, generate quizzes
- Spaced repetition reminders via SMTP email (SM-2 intervals)
- APScheduler daily reminder jobs
- Celery + Redis for background PDF processing
- React frontend with all pages
- Docker Compose deployment (nginx + backend + celery + redis)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
