- Updated navigation links across guess.html, index.html, lists.html, players.html, roulette.html, rules.html, and run.html for consistency and clarity.
- Enhanced index.html with a sign-up button for user registration.
- Modified lists.html to improve user guidance on video watching and added a "My %" column for tracking progress.
- Introduced login.html and signup.html for user authentication, including form validation and status messages.
- Implemented server-side user authentication in server.js, including user registration, login, and session management.
- Added user data handling for roulette progress and saved runs.
- Created a .gitignore file to exclude sensitive user data files from version control.
- Updated styles.css to accommodate new UI elements for authentication and improved layout.
Introduce a new Guess The Rank feature: add guess.html and associated styles and logic. app.js gains video modal utilities (extractYouTubeID, openVideoModal, renderApprovedRunsForLevel) and the full guessing-game flow (modes, round lifecycle, input handling). Refactor existing video-open usage to the new modal and enable showing approved runs in the modal. Update multiple navs and index highlights to link to the new Guess Game. Add CSS for guess UI and responsive tweaks, and adjust some UI copy (e.g. "View Video").