youtube/cobalt ? reverse-engineered prompt

I want to work on this Chromium based project and get a simple HTML5 app container running cleanly from the source here.

Please inspect the repo, figure out the right way to build and launch it on a local machine, and then make any small fixes needed so I can compile and run the default app without getting stuck on setup issues. If there are existing docs or build steps in the repo, use those first, and look up current docs online if you need to.

I’d also like a basic starter experience that opens the app reliably, feels lightweight, and behaves like a simple web container rather than a full browser. If there are obvious places to improve startup, default UI, or build instructions, please update them too.

Keep the changes focused and practical, and make sure the project still builds after your edits.