Does someone have a rudimentary but working example of using the App-Shell-Pattern in Angular 19? The docs on angular.dev are very poor, and all the articles that could be found are either on a lower version of Angular or do much more than the App-Shell. What I want to achieve is that a static generated code is presented to the user while the rest of the app (stylesheets, js, css, assets) is still downloaded, in short to reduce the time to first paint. Continue reading...