SabreDevStudio/RedApp-Fundamentals — reverse-engineered prompt

I want a small working Sabre Red 360 Web Red App sample that demonstrates the basic SDK setup and common starter patterns. It should be easy for a developer to open, run, and understand, like a fundamentals training project from a developer bench session.

Please create the app structure, include the setup needed to connect it to the Sabre Red 360 environment, and add clear example screens or actions that show how a Web Red App talks to the SDK at a beginner level. Keep the code simple and commented so someone new to Red Apps can follow it and use it as a starting point for their own app.

Use TypeScript and whatever current Sabre Red 360 SDK guidance requires. If anything has changed since older examples, look up the current docs online and adjust the project so it still builds and runs.