Xeridex Full Lozand-Like Secure Rebuild

Demo logins:
User: user@xeridex.com / password
Admin: admin@xeridex.com / admin123

Modules included:
- Landing page and authentication
- User dashboard
- Trading terminal with XERUSD, forex and crypto pairs
- Wallet deposits and withdrawals
- Payment API abstraction layer
- Paystack, Flutterwave, Stripe, PayPal and Crypto gateway scaffolds
- Admin gateway controls
- KYC, transactions, challenges, markets, copy trading, bots
- Admin user, market, content, finance and security panels

Open PAYMENT_API_GUIDE.md for API setup and webhook instructions.

TradingView + Broker-ready upgrade:
- Advanced TradingView widgets added to live and demo terminals.
- Demo broker records orders locally.
- Live broker placeholder prevents unsafe real-money execution until proper API keys and compliance are configured.
- See BROKER_API_INTEGRATION_GUIDE.md.
