Optimze worker for backtest

src/Managing.Application/Bots/TradingBotBase.cs

@@ -351,6 +351,13 @@ public class TradingBotBase : ITradingBot
 
     private async Task ManagePositions()
     {
+        // Early exit optimization - skip if no positions to manage
+        var hasOpenPositions = Positions.Values.Any(p => !p.IsFinished());
+        var hasWaitingSignals = Signals.Values.Any(s => s.Status == SignalStatus.WaitingForPosition);
+        
+        if (!hasOpenPositions && !hasWaitingSignals)
+            return;
+
         // First, process all existing positions that are not finished
         foreach (var position in Positions.Values.Where(p => !p.IsFinished()))
         {