Fix restart/start if not account with the first account of the user

src/Managing.Application.Abstractions/Grains/ILiveTradingBotGrain.cs

@@ -53,4 +53,9 @@ public interface ILiveTradingBotGrain : IGrainWithGuidKey
     /// Returns true if there are open positions, false otherwise
     /// </summary>
     Task<bool> HasOpenPositionsAsync();
+
+    /// <summary>
+    /// Gets the user who owns this bot
+    /// </summary>
+    Task<User> GetUserAsync();
 }

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

@@ -1006,4 +1006,17 @@ public class LiveTradingBotGrain : Grain, ILiveTradingBotGrain, IRemindable
             return true;
         }
     }
+
+    /// <summary>
+    /// Gets the user who owns this bot
+    /// </summary>
+    public Task<User> GetUserAsync()
+    {
+        if (_state.State.User == null)
+        {
+            throw new InvalidOperationException($"Bot '{_state.State.Config?.Name}' (ID: {_state.State.Identifier}) has no user information.");
+        }
+
+        return Task.FromResult(_state.State.User);
+    }
 }

src/Managing.Application/ManageBot/BotService.cs

@@ -109,9 +109,35 @@ namespace Managing.Application.ManageBot
 
                 // Check balances for EVM/GMX V2 bots before starting/restarting
                 var botConfig = await botGrain.GetConfiguration();
-                var account = await ServiceScopeHelpers.WithScopedService<IAccountService, Account>(
+                
+                Account account;
+                if (string.IsNullOrEmpty(botConfig.AccountName))
+                {
+                    // Fallback: Get the first account for the user
+                    var user = await botGrain.GetUserAsync();
+                    
+                    account = await ServiceScopeHelpers.WithScopedService<IAccountService, Account>(
+                        _scopeFactory,
+                        async accountService =>
+                        {
+                            var userAccounts = await accountService.GetAccountsByUserAsync(user, true, true);
+                            var firstAccount = userAccounts.FirstOrDefault();
+                            if (firstAccount == null)
+                            {
+                                throw new InvalidOperationException($"User '{user.Name}' has no accounts configured.");
+                            }
+                            return firstAccount;
+                        });
+                    
+                    _tradingBotLogger.LogInformation("Bot '{BotName}' (ID: {BotId}) using fallback account '{AccountName}' for user '{UserName}'", 
+                        botConfig.Name, identifier, account.Name, user.Name);
+                }
+                else
+                {
+                    account = await ServiceScopeHelpers.WithScopedService<IAccountService, Account>(
                         _scopeFactory,
                         async accountService => await accountService.GetAccount(botConfig.AccountName, true, true));
+                }
 
                 if (account.Exchange == TradingExchanges.Evm || account.Exchange == TradingExchanges.GmxV2)
                 {

src/Managing.Application/ManageBot/StartBotCommandHandler.cs

@@ -43,11 +43,21 @@ namespace Managing.Application.ManageBot
                     $"Bot trading balance must be greater than {Constants.GMX.Config.MinimumPositionAmount}");
             }
 
-            var account = await _accountService.GetAccount(request.Config.AccountName, true, true);
+            Account account;
-
+            if (string.IsNullOrEmpty(request.Config.AccountName))
-            if (account == null)
             {
-                throw new Exception($"Account {request.Config.AccountName} not found");
+                // Fallback: Get the first account for the user
+                var userAccounts = await _accountService.GetAccountsByUserAsync(request.User, true, true);
+                var firstAccount = userAccounts.FirstOrDefault();
+                if (firstAccount == null)
+                {
+                    throw new InvalidOperationException($"User '{request.User.Name}' has no accounts configured.");
+                }
+                account = firstAccount;
+            }
+            else
+            {
+                account = await _accountService.GetAccount(request.Config.AccountName, true, true);
             }
 
             // Check balances for EVM/GMX V2 accounts before starting