feat: implement Redis-first refresh token storage with Supabase fallback

feat: integrate Alembic for automated database schema migrations and define ORM models

feat: migrate RAG chatbot model from Groq Llama 3.1 to Ministral 8b

refactor: implement stateless Supabase JWT validation to resolve 403 race conditions

feat: implement stateless JWT-based authentication with refresh tokens stored in HTTPOnly Cookies

feat: implement LLM fallback for quiz generation and enhance OAuth error handling

feat: implement password update functionality and add signup, forgot-password, and update-password pages

refactor: add NSFW and gibbreish words filtering

refactor: changing to gemini model, modularize constants and schemas and update user daily generation limit

feat: Adding Parallel Processing and enhance main dashboard, summary and chat styles

feat: migrate UI to Next.js with extensive component library and integrate Hugging Face deployment workflow

refactor: restructure project into modular src architecture and implement database store layer