Remove demo data fallbacks - use only real Drift account data

- Updated Dashboard.tsx to remove demo data fallbacks
- Updated TradingHistory.tsx to use new Drift trading history endpoint
- Added getTradingHistory method to DriftTradingService
- Created new /api/drift/trading-history endpoint
- Removed fallback demo positions from getPositions method
- All UI components now show only real Drift account data or empty states
- No more hardcoded mock trades or positions

docker-compose.yml

@@ -3,6 +3,7 @@ services:
     build: 
       context: .
       dockerfile: Dockerfile
+      network: host
     
     # Base environment variables (common to all environments)
     environment: