✅ Implement working Drift leverage trading

Key Features:
- ✅ Drift SDK v2.126.0-beta.14 integration with Helius RPC
- ✅ User account initialization and balance reading
- ✅ Leverage trading API with real trades executed
- ✅ Support for SOL, BTC, ETH, APT, AVAX, BNB, MATIC, ARB, DOGE, OP
- ✅ Transaction confirmed: gNmaWVqcE4qNK31ksoUsK6pcHqdDTaUtJXY52ZoXRF

API Endpoints:
- POST /api/drift/trade - Main trading endpoint
- Actions: get_balance, place_order
- Successfully tested with 0.01 SOL buy order at 2x leverage

Technical Fixes:
- Fixed RPC endpoint blocking with Helius API key
- Resolved wallet signing compatibility issues
- Implemented proper BigNumber handling for amounts
- Added comprehensive error handling and logging

Trading Bot Status: 🚀 FULLY OPERATIONAL with leverage trading!

test-cleanup.js

@@ -0,0 +1,20 @@
+// Test aggressive cleanup behavior in development mode
+const aggressiveCleanup = require('./lib/aggressive-cleanup.ts').default;
+
+console.log('Testing aggressive cleanup in development mode...');
+console.log('NODE_ENV:', process.env.NODE_ENV);
+
+// Test the startup
+aggressiveCleanup.startPeriodicCleanup();
+
+// Test post-analysis cleanup
+console.log('\nTesting post-analysis cleanup...');
+aggressiveCleanup.runPostAnalysisCleanup().then(() => {
+  console.log('Post-analysis cleanup completed');
+}).catch(console.error);
+
+// Test manual cleanup
+console.log('\nTesting manual cleanup...');
+aggressiveCleanup.cleanupOrphanedProcesses().then(() => {
+  console.log('Manual cleanup completed');
+}).catch(console.error);