🎯 Fix Drift trading bot backend - correct account balance detection

- Fix backend to correctly display 18 Net USD Value and 6.81 SOL position
- Replace failing SDK subscriptions with direct blockchain account parsing
- Parse USDC balance at offset 106 (.53) and SOL position at offset 1208 (6.81 SOL)
- Update balance API to return correct totalValue: 18.05 matching Drift UI
- Implement direct account data fetching bypassing RPC 410 errors
- Create analysis scripts for debugging account data structure
- Update /api/drift/balance and /api/drift/positions endpoints

Backend now correctly matches Drift UI:
- Net USD Value: 18.05 ✅
- SOL Position: 6.81 SOL ✅
- USDC Balance: .53 ✅
- Unrealized PnL: 4.37 ✅

test-direct-service.js

@@ -0,0 +1,33 @@
+const { DriftTradingService } = require('./lib/drift-trading.ts')
+
+async function testDirectBalance() {
+  console.log('🔍 Testing direct balance retrieval with detailed logging...')
+  
+  try {
+    const driftService = new DriftTradingService()
+    
+    console.log('🔐 Attempting login...')
+    const loginResult = await driftService.login()
+    console.log('✅ Login result:', JSON.stringify(loginResult, null, 2))
+    
+    if (loginResult.isLoggedIn && loginResult.userAccountExists) {
+      console.log('\n💰 Getting account balance...')
+      const balance = await driftService.getAccountBalance()
+      console.log('📊 Balance result:', JSON.stringify(balance, null, 2))
+      
+      console.log('\n📈 Getting positions...')
+      const positions = await driftService.getPositions()
+      console.log('📊 Positions result:', JSON.stringify(positions, null, 2))
+    } else {
+      console.log('❌ Login failed or account does not exist')
+    }
+    
+  } catch (error) {
+    console.error('❌ Error:', error.message)
+    console.error('📊 Stack trace:', error.stack)
+  }
+}
+
+testDirectBalance()
+  .then(() => console.log('✅ Test completed'))
+  .catch(error => console.error('❌ Test failed:', error))