Handle settings logs agent failures

MeetingAssistant/Workflow/WorkflowRulesEditorChatViewModel.cs

@@ -17,6 +17,8 @@ public sealed class WorkflowRulesEditorChatViewModel
 
     public bool IsThinking { get; private set; }
 
+    public string ActivityMessage { get; private set; } = "Thinking...";
+
     public event EventHandler? Changed;
 
     public async Task SendAsync(CancellationToken cancellationToken = default)
@@ -31,6 +33,7 @@ public sealed class WorkflowRulesEditorChatViewModel
         var priorConversation = Messages.ToList();
         Messages.Add(new WorkflowRulesEditorChatMessage(WorkflowRulesEditorChatRole.User, prompt));
         IsThinking = true;
+        ActivityMessage = "Thinking...";
         OnChanged();
 
         try
@@ -38,26 +41,39 @@ public sealed class WorkflowRulesEditorChatViewModel
             var result = await pipeline.SendAsync(
                 priorConversation,
                 prompt,
-                cancellationToken);
+                cancellationToken,
+                SetActivityMessage);
             Messages.Clear();
             foreach (var message in result.Conversation)
             {
                 Messages.Add(message);
             }
         }
-        catch (Exception exception) when (exception is not OperationCanceledException)
+        catch (Exception exception) when (exception is not OperationCanceledException || !cancellationToken.IsCancellationRequested)
         {
             Messages.Add(new WorkflowRulesEditorChatMessage(
                 WorkflowRulesEditorChatRole.Agent,
-                $"Rules editor failed: {exception.Message}"));
+                $"Settings and logs failed: {exception.Message}"));
         }
         finally
         {
             IsThinking = false;
+            ActivityMessage = "Thinking...";
             OnChanged();
         }
     }
 
+    private void SetActivityMessage(string message)
+    {
+        if (!IsThinking || string.IsNullOrWhiteSpace(message))
+        {
+            return;
+        }
+
+        ActivityMessage = message;
+        OnChanged();
+    }
+
     private void OnChanged()
     {
         Changed?.Invoke(this, EventArgs.Empty);