feat: Complete DEX frontend integration with Pezkuwi SDK

🎉 Full DEX UI with token swap functionality
✅ Wallet connection with Polkadot.js extension
🔄 Real-time balance updates and transaction status

## Features / Taybetmendî:
- ✅ Token swap interface (wHEZ ↔ PEZ) / Rûkarê swap tokenan
- ✅ Wallet integration / Pêvekirina wallet
- ✅ Balance display / Nîşandana balance
- ✅ Transaction processing / Pêvajoya transaction
- ✅ Real-time updates / Nûvekirinên real-time

## Components:
- App.tsx - Main swap interface
- wallet.ts - Polkadot.js integration
- Responsive UI with loading states

Connected to Pezkuwi SDK testnet / Girêdayî testnet Pezkuwi SDK

Bi kêfxweş ji bo Kurdistan 🌟

src/main.tsx

@@ -1,8 +1,5 @@
 import { createRoot } from 'react-dom/client'
 import App from './App.tsx'
-import { WalletProvider } from './contexts/WalletContext'
-import { WebSocketProvider } from './contexts/WebSocketContext'
-import { PolkadotProvider } from './contexts/PolkadotContext'
 import './index.css'
 import './i18n/config'
 
@@ -13,13 +10,5 @@ declare global {
   }
 }
 
-// Remove dark mode class addition
-createRoot(document.getElementById("root")!).render(
-  <PolkadotProvider endpoint="ws://127.0.0.1:9944">
-    <WalletProvider>
-      <WebSocketProvider>
-        <App />
-      </WebSocketProvider>
-    </WalletProvider>
-  </PolkadotProvider>
-);
+// All providers are now in App.tsx for better organization
+createRoot(document.getElementById("root")!).render(<App />);