added basic flow and prompting

views/mainwindow.axaml

@@ -57,13 +57,19 @@
                           ItemsSource="{Binding Levels}"
                           SelectedItem="{Binding SelectedLevel}"/>
 
+                <Label Content="System:"/>
+                <ComboBox HorizontalAlignment="Stretch"
+                          ItemsSource="{Binding Systems}"
+                          SelectedItem="{Binding SelectedSystem}"/>
+
                 <Label Content="Description:"/>
                 <TextBox Text="{Binding Description}" AcceptsReturn="True" Height="100" PlaceholderText="Enter description here..."/>
             </StackPanel>
 
             <Button Content="Generate" HorizontalAlignment="Stretch" HorizontalContentAlignment="Center"
-                    Command="{Binding GenerateCommand}" FontWeight="Bold"/>
- 
+                    Command="{Binding GenerateCommand}" FontWeight="Bold" IsEnabled="{Binding CanGenerate}"/>
+
+            <ProgressBar Minimum="0" Maximum="1" Value="{Binding Progress}" IsVisible="{Binding IsGenerating}" Height="10"/> 
             <TextBlock Text="{Binding StatusMessage}" TextWrapping="Wrap" Margin="0,10,0,0"/>
 
             <StackPanel Spacing="5" Margin="0,10,0,0" IsVisible="{Binding IsNpcSelected}">