aerele/pwa-builder ? reverse-engineered prompt

Build me a low code web app for creating Progressive Web Apps on top of a Frappe site.

I want users to be able to connect to their current site, or connect another Frappe site with a URL and credentials, then choose DocTypes and drag fields into mobile app screens. The main experience should have a dashboard with projects, templates, and a getting started checklist, plus a visual builder with a field palette, canvas, and live phone preview so people can see the screen as they edit it. Include screen templates for required fields, all fields, or a blank start, and a Flow view where users can reorder screens for navigation.

Also add a simple settings area for GitHub username and token, then a one click publish action that exports the project as a Frappe app and pushes it to a GitHub repo with a progress timeline. Make it feel polished with dark mode, an offline indicator, and a desk style workspace for quick navigation.