feat: Add WebView2 backend integration for React UI

- Add WebView2 support to STDLabelAttach project
- Create MachineBridge.cs for JavaScript-C# communication
  - GetConfig/SaveConfig using SETTING.Data reflection
  - Recipe management (CRUD operations)
  - IO control interface
  - Motion control simulation
- Add WebSocketServer.cs for HMR development support
- Update fWebView.cs with PLC simulation and status updates
- Integrate with existing project settings (Data/Setting.json)
- Add virtual host mapping (http://hmi.local → FrontEnd/dist)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Handler/Project/app.config

@@ -7,7 +7,7 @@
     <sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
       <section name="Project.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
     </sectionGroup>
-    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
+    
     <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
   </configSections>
   <connectionStrings>