fix: implement proper multi-timeframe batch analysis

- Create /api/batch-analysis endpoint that collects ALL screenshots first
- Then sends all screenshots to AI for comprehensive analysis
- Fixes issue where individual timeframes were analyzed immediately
- Multi-timeframe analysis now provides cross-timeframe consensus
- Update AIAnalysisPanel to use batch analysis for multiple timeframes
- Maintains backward compatibility with single timeframe analysis

lib/startup.ts

@@ -7,7 +7,9 @@ import aggressiveCleanup from './aggressive-cleanup'
 // Initialize cleanup system
 console.log('🚀 Initializing trading bot systems...')
 console.log('🧹 Process cleanup handlers initialized')
-console.log('🧹 Aggressive cleanup system initialized')
+
+// Start aggressive cleanup system (singleton pattern ensures only one instance)
+aggressiveCleanup.startPeriodicCleanup()
 
 // Export cleanup for manual access
 export { processCleanup, aggressiveCleanup }