feat: implement strategy-aware analysis intervals and remove manual leverage controls

- Remove manual leverage field from automation v2 page since AI now handles leverage automatically
- Fix scalping strategy analysis intervals from 60 minutes to 2 minutes for proper high-frequency trading
- Implement intelligent interval detection based on selected timeframes:
  * Scalping: 2 minutes (5m, 3m, or multiple short timeframes)
  * Day trading: 5 minutes (1h, 2h timeframes)
  * Swing trading: 15 minutes (4h, daily timeframes)
- Fix Drift SDK API calls: replace getTotalPerpPositionValue() with getFreeCollateral()
- Clean up UI by removing manual controls since AI systems handle optimization
- Fix syntax errors in automation service and balance API
- Ensure proper margin calculations using correct Drift Protocol methods

Tested: Scalping strategy now correctly analyzes every 2 minutes instead of 60 minutes

lib/automation-service-simple.ts

@@ -168,6 +168,35 @@ export class AutomationService {
   }
 
   private getIntervalFromTimeframe(timeframe: string): number {
+    // Check if this is a scalping strategy (multiple short timeframes)
+    if (this.config?.selectedTimeframes) {
+      const timeframes = this.config.selectedTimeframes
+      const isScalping = timeframes.includes('5') || timeframes.includes('3') || (timeframes.length > 1 && timeframes.every(tf => ['1', '3', '5', '15', '30'].includes(tf)))
+      if (isScalping) {
+        console.log('🎯 Scalping strategy detected - using frequent analysis (2-3 minutes)')
+        return 2 * 60 * 1000 // 2 minutes for scalping
+      }
+      
+      // Day trading strategy (short-medium timeframes)
+      const isDayTrading = timeframes.includes('60') || timeframes.includes('120') ||
+                          timeframes.some(tf => ['30', '60', '120'].includes(tf))
+      
+      if (isDayTrading) {
+        console.log('⚡ Day trading strategy detected - using moderate analysis (5-10 minutes)')
+        return 5 * 60 * 1000 // 5 minutes for day trading
+      }
+      
+      // Swing trading (longer timeframes)
+      const isSwingTrading = timeframes.includes('240') || timeframes.includes('D') ||
+                            timeframes.some(tf => ['240', '480', 'D', '1d'].includes(tf))
+      
+      if (isSwingTrading) {
+        console.log('🎯 Swing trading strategy detected - using standard analysis (15-30 minutes)')
+        return 15 * 60 * 1000 // 15 minutes for swing trading
+      }
+    }
+
+    // Fallback to timeframe-based intervals
     const intervals: { [key: string]: number } = {
       '1m': 60 * 1000,
       '3m': 3 * 60 * 1000,