🎯 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-api-direct.js

@@ -0,0 +1,130 @@
+const http = require('http');
+
+console.log('🔍 Testing API endpoints directly...');
+
+// Test login endpoint
+const options = {
+  hostname: 'localhost',
+  port: 3000,
+  path: '/api/drift/login',
+  method: 'POST',
+  headers: {
+    'Content-Type': 'application/json',
+  },
+};
+
+console.log('📡 Testing /api/drift/login...');
+
+const req = http.request(options, (res) => {
+  console.log(`Status: ${res.statusCode}`);
+  console.log(`Headers:`, res.headers);
+  
+  let data = '';
+  res.on('data', (chunk) => {
+    data += chunk;
+  });
+  
+  res.on('end', () => {
+    console.log('📦 Response body:');
+    console.log(data);
+    
+    if (res.statusCode === 200) {
+      try {
+        const result = JSON.parse(data);
+        console.log('✅ Login successful:', result);
+        
+        // Now test balance endpoint
+        testBalance();
+      } catch (e) {
+        console.log('❌ Failed to parse JSON response:', e.message);
+      }
+    } else {
+      console.log('❌ Login failed with status:', res.statusCode);
+    }
+  });
+});
+
+req.on('error', (e) => {
+  console.error('❌ Request error:', e.message);
+});
+
+req.end();
+
+function testBalance() {
+  console.log('\n📡 Testing /api/drift/balance...');
+  
+  const balanceOptions = {
+    hostname: 'localhost',
+    port: 3000,
+    path: '/api/drift/balance',
+    method: 'GET',
+  };
+
+  const balanceReq = http.request(balanceOptions, (res) => {
+    console.log(`Balance Status: ${res.statusCode}`);
+    
+    let data = '';
+    res.on('data', (chunk) => {
+      data += chunk;
+    });
+    
+    res.on('end', () => {
+      console.log('📦 Balance Response:');
+      console.log(data);
+      
+      try {
+        const result = JSON.parse(data);
+        console.log('✅ Balance result:', result);
+      } catch (e) {
+        console.log('❌ Failed to parse balance JSON:', e.message);
+      }
+      
+      // Test positions
+      testPositions();
+    });
+  });
+
+  balanceReq.on('error', (e) => {
+    console.error('❌ Balance request error:', e.message);
+  });
+
+  balanceReq.end();
+}
+
+function testPositions() {
+  console.log('\n📡 Testing /api/drift/positions...');
+  
+  const positionsOptions = {
+    hostname: 'localhost',
+    port: 3000,
+    path: '/api/drift/positions',
+    method: 'GET',
+  };
+
+  const positionsReq = http.request(positionsOptions, (res) => {
+    console.log(`Positions Status: ${res.statusCode}`);
+    
+    let data = '';
+    res.on('data', (chunk) => {
+      data += chunk;
+    });
+    
+    res.on('end', () => {
+      console.log('📦 Positions Response:');
+      console.log(data);
+      
+      try {
+        const result = JSON.parse(data);
+        console.log('✅ Positions result:', result);
+      } catch (e) {
+        console.log('❌ Failed to parse positions JSON:', e.message);
+      }
+    });
+  });
+
+  positionsReq.on('error', (e) => {
+    console.error('❌ Positions request error:', e.message);
+  });
+
+  positionsReq.end();
+}