feat: integrate AnarchKeyClient for secure API key management and update configuration handling

chore: initialize project with package.json for MindVault full-stack document Q&A system

feat: update dependencies and add configuration for environment variables

feat: add initial README.md with project overview, features, and setup instructions

feat: add .gitignore to exclude backend/test.json from version control

feat: implement flashcard and quiz functionality with tab navigation in StudySession

feat: update Landing page title with animated gradient styling

feat: enhance Dashboard UI with improved navigation and logout button styling

feat: add study aids API for generating flashcards and quizzes

feat: add animated gradient text and 3D card utilities for flashcards

feat: add flashcard and quiz generation routes to study session management

feat: add quiz model with schemas for questions and attempts

feat: implement flashcard and quiz generation features with JSON parsing and sanitization

refactor: remove redundant comment about serving uploaded files from MongoDB

feat: use createPortal for ThemeToggle button to improve fixed positioning