jems-trepo/esp32-cloud-flash ? reverse-engineered prompt

Build me a simple web app for cloud flashing ESP32 devices.

I want a frontend where a user can connect, choose a firmware build, and start a flash process without having to use local tools. It should feel like a clean dashboard with a clear device status, upload or select firmware, progress while flashing, and a success or error message when it finishes.

Also set up the backend so it can handle the flashing requests, talk to the frontend, and keep track of the job status. If it helps, make it easy to run locally and easy to deploy, since this looks like it should work as a hosted app.

Keep the UI straightforward and practical, focused on getting an ESP32 updated from the browser. If you need to check current docs or best practices for anything, feel free to look them up online first.