Fix Runtime by adding TotalRuntimeInSeconds

src/Managing.Infrastructure.Database/PostgreSql/Entities/BotEntity.cs

@@ -21,6 +21,12 @@ public class BotEntity
     public DateTime CreateDate { get; set; }
     public DateTime UpdatedAt { get; set; }
     public DateTime StartupTime { get; set; }
+    
+    // Runtime tracking fields
+    public DateTime? LastStartTime { get; set; }
+    public DateTime? LastStopTime { get; set; }
+    public long AccumulatedRunTimeSeconds { get; set; }
+    
     public int TradeWins { get; set; }
     public int TradeLosses { get; set; }
     public decimal Pnl { get; set; }