feat(offline): implement offline resilience for exams

feat: implement exam lifecycle management

feat(ui): implement design token system and core components

ci: add Hugging Face sync workflow

feat(auth): implement email-password authentication

refactor: update authentication and ID schemes

fix: improve Firebase initialization and API error handling

feat(ai): implement asynchronous AI document parsing

feat(ui): implement glassmorphism design system

feat: Implement core UI styling and landing page enhancements

feat: Introduce question bank and group management

feat: Initial project setup for ExamForge

Initial commit