Fix chat history bleed bug and add professional README

Remove yfinance to fix websockets error, use binance.us, and simplify UI

Implement yfinance, usdt_amount logic, and major UI overhaul

Upgrade to Gradio 5.1.0 and hide API endpoints to fix schema parsing bug

Add type hints to event handlers to prevent schema parsing bugs

Fix gradio history and version compatibility

Initialize Crypto-Agent