lifonnnn

* This credit card payoff calculator app allows users to: * 1. Add and remove multiple credit cards with their balances and interest rates * 2. Calculate monthly payments based on desired payoff time * 3. View individual card payoff information * 4. See a combined view of all cards * 5. Visualize payoff data with different types of charts * * It uses React for the UI, SQLite for data persistence, and Chart.js for visualization. * The app is now optimized for mobile devices with responsive design.