Add overall progress, notifications, and UI polish

- Unify audio/subtitle selection: single-select, auto-default,
  cross-file propagation by exact name
- Show file size in queue, group divider and reordered columns in
  track table, drop accent highlight on row selection
- Add cumulative progress bar (files finished, MB copied) to the
  stripping window
- Add Windows toast notifications on stripping completion/cancel/error
- Restart the app after settings are changed; Cancel no longer
  clears the queue, only closes the window
- Add ConfigureAwait(false) throughout MkvService so concurrent
  strips don't starve the UI thread
- Hardcode scan/strip concurrency (10/5) instead of exposing it in
  Settings

Futonizer.csproj

@@ -5,6 +5,7 @@
     <TargetFramework>net10.0-windows</TargetFramework>
     <Nullable>enable</Nullable>
     <UseWPF>true</UseWPF>
+    <UseWindowsForms>true</UseWindowsForms>
     <ImplicitUsings>enable</ImplicitUsings>
     <AssemblyName>Futonizer</AssemblyName>
     <RootNamespace>Futonizer</RootNamespace>
@@ -15,6 +16,11 @@
     <PackageReference Include="WPF-UI" Version="4.3.0" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Using Remove="System.Windows.Forms" />
+  </ItemGroup>
+
+
   <ItemGroup>
     <Resource Include="Assets\app.png" />
   </ItemGroup>