Add High network fees error message

src/Managing.Application/Trading/Handlers/OpenPositionCommandHandler.cs

@@ -53,8 +53,8 @@ namespace Managing.Application.Trading.Handlers
                     if (currentGasFees > Constants.GMX.Config.MaximumGasFeeUsd)
                     {
                         throw new InsufficientFundsException(
-                            $"Gas fee too high for position opening: {currentGasFees:F2} USD (threshold: {Constants.GMX.Config.MaximumGasFeeUsd} USD). Position opening cancelled.",
-                            InsufficientFundsType.InsufficientEth);
+                            $"Gas fee too high for position opening: {currentGasFees:F2} USD (threshold: {Constants.GMX.Config.MaximumGasFeeUsd} USD). Position opening rejected.",
+                            InsufficientFundsType.HighNetworkFee);
                     }
                 }
             }

src/Managing.Core/Exceptions/CustomExceptions.cs

@@ -105,21 +105,26 @@ public class InsufficientFundsException : Exception
         return errorType switch
         {
             InsufficientFundsType.InsufficientEth => 
-                "❌ **Insufficient ETH for Gas Fees**\n" +
+                "❌ Insufficient ETH for Gas Fees\n" +
                 "Your wallet doesn't have enough ETH to pay for transaction gas fees.\n" +
                 "Please add ETH to your wallet and try again.",
             
             InsufficientFundsType.InsufficientAllowance => 
-                "❌ **Insufficient Token Allowance**\n" +
+                "❌ Insufficient Token Allowance\n" +
                 "The trading contract doesn't have permission to spend your tokens.\n" +
                 "Please approve token spending in your wallet and try again.",
             
             InsufficientFundsType.InsufficientBalance => 
-                "❌ **Insufficient Token Balance**\n" +
+                "❌ Insufficient Token Balance\n" +
                 "Your wallet doesn't have enough tokens for this trade.\n" +
                 "Please add more tokens to your wallet and try again.",
+
+            InsufficientFundsType.HighNetworkFee => 
+                "❌ High Network Fee\n" +
+                "The gas fee for this position is too high.\n" +
+                "Position opening rejected.",
             
-            _ => "❌ **Transaction Failed**\n" +
+            _ => "❌ Transaction Failed\n" +
                  "The transaction failed due to insufficient funds.\n" +
                  "Please check your wallet balance and try again."
         };
@@ -149,5 +154,6 @@ public enum InsufficientFundsType
     /// <summary>
     /// General insufficient funds error
     /// </summary>
-    General
+    General,
+    HighNetworkFee
 }