pgadmin-org/pgadmin4 — reverse-engineered prompt

Build me a pgAdmin 4 style PostgreSQL administration app. I want a web app that lets someone run a local server, open it in a browser, connect to PostgreSQL, and manage their database from a clean React interface instead of using the command line.

Use Python with Flask on the server side and React for the client side, since this should work like a modern rewrite of a database admin tool. It should support a normal browser mode, and leave room for a desktop runtime that can start the Python server and show the same UI in a standalone app.

Please set up the project so I can install dependencies, build the web assets, create a local config file, initialize the app database, and run it locally. Include sensible defaults for development, with server and desktop mode configuration options. Keep the first version focused on a solid working foundation for PostgreSQL administration. Look up current docs online if you need to.