ManifoldJS cannot generate Electron Apps for Mac and Windows. ManifoldJS is able to generate UWP Apps for Windows 10 and apps for Windows 8.1 , iOS, Android, Chrome, and Firefox OS. Upcoming releases will support additional platforms.
Yes the redirect after publication is possible but clearly violates multiple Windows Store Policies. When detected by the store, this app would be taken down. It's a similar process to Windows 8/8.1 apps that contained a WebView.