feat(product-carousel): enhance image loading with optimized attributes and improve layout consistency
style: refactor HTML structure for better readability and maintainability
test(product-detail): add unit tests for product detail resolver and component behavior
- Add AuthService for handling login, registration, and session management.
- Create auth guards to protect routes based on authentication status.
- Implement auth interceptor to attach JWT token to HTTP requests and handle 401 errors.
- Add unit tests for AuthService, guards, and interceptor.
- Create login and registration components with form validation and error handling.
- Update routing to include guards for login and registration pages.
