fix: enhance diff view by truncating long file paths with ellipsis and adding tooltips for full path display

Author: gadfly3173

src/Views/DiffView.axaml

@@ -20,11 +20,12 @@
             <TextBlock Margin="8,0,0,0" Text="→"/>
           </StackPanel>
 
-          <StackPanel Grid.Column="1" Orientation="Horizontal" VerticalAlignment="Center">
-            <Path Width="12" Height="12" Data="{StaticResource Icons.File}" Margin="8,0,0,0"/>
-            <TextBlock Classes="monospace" Margin="4,0,0,0" Text="{Binding FilePath, Converter={x:Static c:PathConverters.TruncateIfTooLong}}" FontSize="11"/>
-            <Path Classes="rotating" Width="10" Height="10" Margin="8,0" Data="{DynamicResource Icons.Loading}" IsVisible="{Binding IsLoading}"/>
-          </StackPanel>
+          <DockPanel Grid.Column="1" VerticalAlignment="Center">
+            <Path DockPanel.Dock="Left" Width="12" Height="12" Data="{StaticResource Icons.File}" Margin="8,0,0,0"/>
+            <TextBlock Classes="monospace" Margin="4,0,0,0" Text="{Binding FilePath, Converter={x:Static c:PathConverters.TruncateIfTooLong}}"
+                       TextTrimming="CharacterEllipsis" TextWrapping="NoWrap" HorizontalAlignment="Stretch" ToolTip.Tip="{Binding FilePath}" FontSize="11"/>
+            <Path DockPanel.Dock="Right" Classes="rotating" Width="10" Height="10" Margin="8,0" Data="{StaticResource Icons.Loading}" IsVisible="{Binding IsLoading}"/>
+          </DockPanel>
 
           <StackPanel Grid.Column="2" Orientation="Horizontal" VerticalAlignment="Center" IsVisible="{Binding FileModeDiff, Converter={x:Static c:ObjectConverters.IsNotNull}}">
             <TextBlock Classes="monospace" Margin="8,0,0,0" Text="{DynamicResource Text.Diff.FileModeChanged}" FontSize="11"/>