Add yield for orleans + 1min to 2h timeout for grain message + more exception send to sentry

src/Managing.Application/Bots/Grains/BacktestTradingBotGrain.cs

@@ -82,6 +82,10 @@ public class BacktestTradingBotGrain : Grain, IBacktestTradingBotGrain
         var initialBalance = config.BotTradingBalance;
 
         var fixedCandles = new HashSet<Candle>();
+        var lastYieldTime = DateTime.UtcNow;
+        const int yieldIntervalMs = 5000; // Yield control every 5 seconds to prevent timeout
+        const int candlesPerBatch = 100; // Process in batches to allow Orleans to check for cancellation
+        
         // Process all candles following the exact pattern from GetBacktestingResult
         foreach (var candle in candles)
         {
@@ -94,6 +98,16 @@ public class BacktestTradingBotGrain : Grain, IBacktestTradingBotGrain
 
             currentCandle++;
 
+            // Yield control periodically to prevent Orleans from thinking the grain is stuck
+            // This helps prevent timeout issues during long-running backtests
+            var timeSinceLastYield = (DateTime.UtcNow - lastYieldTime).TotalMilliseconds;
+            if (timeSinceLastYield >= yieldIntervalMs || currentCandle % candlesPerBatch == 0)
+            {
+                // Yield control back to Orleans scheduler
+                await Task.Yield();
+                lastYieldTime = DateTime.UtcNow;
+            }
+
             // Log progress every 10%
             var currentPercentage = (currentCandle * 100) / totalCandles;
             if (currentPercentage >= lastLoggedPercentage + 10)