SYSTEM_DESIGN.md

Architecture

graph TD
    A[Frontend<br/>React + Vite] --> B[Backend<br/>Node.js + Express]
    B --> C[(PostgreSQL<br/>Prisma)]
    B --> D[Cloudinary<br/>Image Upload]
    B --> E[OpenAI API<br/>AI Assistant]
    
    C -.->|Assignment, Course,<br/>User Data| B

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