Fix update agent Summary when new balance fetch

src/Managing.Application.Abstractions/Repositories/IAgentSummaryRepository.cs

@@ -47,4 +47,11 @@ public interface IAgentSummaryRepository
     /// </summary>
     /// <param name="userId">The user ID</param>
     Task IncrementBacktestCountAsync(int userId);
+    
+    /// <summary>
+    /// Updates the total balance for a specific user's agent summary
+    /// </summary>
+    /// <param name="userId">The user ID</param>
+    /// <param name="totalBalance">The new total balance value</param>
+    Task UpdateTotalBalanceAsync(int userId, decimal totalBalance);
 }