Feat: Add live log monitoring tab to UI

Introduces a new "Monitor" tab in the `BuildFFUVM` UI to display live log output from the build process.

When a build is started, the UI now automatically switches to the Monitor tab. It tails the main log file in real-time and displays the content in a list view, which auto-scrolls as new entries appear.

This provides immediate visual feedback on the build progress and any errors without needing to manually open the log file.

Additionally, this change adds a Ctrl+C keyboard shortcut to copy selected log lines from the monitor view to the clipboard.

FFUDevelopment/BuildFFUVM_UI.xaml

@@ -72,7 +72,7 @@
         </Grid.RowDefinitions>
 
         <!-- TabControl with multiple tabs -->
-        <TabControl TabStripPlacement="Left" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" FontSize="14" Padding="10" Grid.Row="0">
+        <TabControl x:Name="MainTabControl" TabStripPlacement="Left" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" FontSize="14" Padding="10" Grid.Row="0">
             <!-- TAB: Home -->
             <TabItem Header="Home" Padding="20">
                 <ScrollViewer VerticalScrollBarVisibility="Auto">
@@ -794,6 +794,13 @@
                     </Grid>
                 </ScrollViewer>
             </TabItem>
+
+            <!-- TAB: Monitor -->
+            <TabItem Header="Monitor" x:Name="MonitorTab" Padding="20">
+                <Grid Margin="10">
+                    <ListBox x:Name="lstLogOutput" SelectionMode="Extended" VirtualizingStackPanel.IsVirtualizing="True" VirtualizingStackPanel.VirtualizationMode="Recycling" ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.HorizontalScrollBarVisibility="Auto" HorizontalContentAlignment="Stretch"/>
+                </Grid>
+            </TabItem>
         </TabControl>
 
         <!-- Progress Bar -->