feat: update accessibility guidelines and enhance component structure. Introduce new frontend accessibility conventions in AGENTS.md, including heading hierarchy and ARIA roles for dialogs and buttons. Refactor TourGuide and related components for lazy loading and improved user experience. Update ESLint configuration to enforce stricter TypeScript rules and add new dependencies for linting. Enhance various components with accessibility features and ensure consistent styling across the application.
feat: enhance user experience with new components and improved error handling. Introduce ErrorFallback component for better error display, add pagination for admin content management, and implement dialogs for test session management. Update routing to include new components and improve accessibility with ARIA attributes. Refactor question formats and integrate debounced search functionality for admin features.
