Add master strategy validation in LiveTradingBotGrain

- Introduced a check to ensure the master strategy is retrieved successfully before proceeding with key validation.
- Added logging for cases where the master strategy is not found, improving traceability in the bot's operation.

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

@@ -514,8 +514,19 @@ public class LiveTradingBotGrain : Grain, ILiveTradingBotGrain, IRemindable
                 try
                 {
                     var ownedKeys = await _kaigenService.GetOwnedKeysAsync(_state.State.User);
+
+                    var masterStrategy = await ServiceScopeHelpers.WithScopedService<IBotService, Bot>(
+                        _scopeFactory,
+                        async botService => await botService.GetBotByIdentifier(_state.State.Config.MasterBotIdentifier.Value));
+                        
+                    if (masterStrategy == null)
+                    {
+                        _logger.LogWarning("Master strategy {MasterBotId} not found", _state.State.Config.MasterBotIdentifier.Value);
+                        return;
+                    }
+
                     var hasMasterStrategyKey = ownedKeys.Items.Any(key =>
-                        string.Equals(key.AgentName, _state.State.Config.MasterBotIdentifier.Value.ToString(), StringComparison.OrdinalIgnoreCase) &&
+                        string.Equals(key.AgentName, masterStrategy.User.AgentName, StringComparison.OrdinalIgnoreCase) &&
                         key.Owned >= 1);
 
                     if (!hasMasterStrategyKey)