Fix Drift balance calculation and implement multi-RPC failover system

- Fixed balance calculation: corrected precision factor for Drift scaledBalance (5.69 vs wrong 0,678.76)
- Implemented multi-RPC failover system with 4 endpoints (Helius, Solana official, Alchemy, Ankr)
- Updated automation page with balance sync, leverage-based position sizing, and removed daily trade limits
- Added RPC status monitoring endpoint
- Updated balance and positions APIs to use failover system
- All Drift APIs now working correctly with accurate balance data

app/api/drift/rpc-status/route.js

@@ -0,0 +1,64 @@
+import { NextResponse } from 'next/server';
+import { Connection } from '@solana/web3.js';
+
+const RPC_URLS = (process.env.SOLANA_RPC_URLS || '').split(',').filter(url => url.trim());
+
+export async function GET() {
+  try {
+    const rpcStatuses = [];
+    
+    for (const rpcUrl of RPC_URLS) {
+      const trimmedUrl = rpcUrl.trim();
+      let status = {
+        url: trimmedUrl,
+        status: 'unknown',
+        latency: null,
+        error: null
+      };
+      
+      try {
+        const startTime = Date.now();
+        const connection = new Connection(trimmedUrl);
+        
+        // Test basic connection with getVersion
+        await connection.getVersion();
+        
+        const latency = Date.now() - startTime;
+        status.status = 'healthy';
+        status.latency = latency;
+        
+      } catch (error) {
+        status.status = 'failed';
+        status.error = error.message;
+      }
+      
+      rpcStatuses.push(status);
+    }
+    
+    const healthyCount = rpcStatuses.filter(s => s.status === 'healthy').length;
+    const totalCount = rpcStatuses.length;
+    
+    return NextResponse.json({
+      success: true,
+      summary: {
+        healthy: healthyCount,
+        total: totalCount,
+        healthyPercentage: totalCount > 0 ? Math.round((healthyCount / totalCount) * 100) : 0
+      },
+      endpoints: rpcStatuses,
+      timestamp: new Date().toISOString()
+    });
+    
+  } catch (error) {
+    console.error('RPC Status Check Error:', error);
+    return NextResponse.json(
+      { 
+        success: false, 
+        error: 'Failed to check RPC status',
+        details: error.message,
+        timestamp: new Date().toISOString()
+      },
+      { status: 500 }
+    );
+  }
+}