- Remove individual exchange registration sections from all READMEs
- Remove redundant Binance, Hyperliquid, Aster DEX detailed setup sections
- Consolidate all exchange info into Supported Exchanges table with register links and setup guides
- Rename section to "Supported Exchanges (DEX/CEX Tutorials)" in respective languages
- Mark Bybit, OKX as supported in CEX section
- Mark Lighter as supported in Perp-DEX section
- Add Bybit API setup guide
- Add OKX API setup guide
- Add Lighter agent wallet setup guide
- Update all READMEs (EN, ZH-CN, JA, KO)