muslim-kh09/NexusFi — reverse-engineered prompt

Build me a self contained micro ISP style platform that runs fully on a rooted Android phone in Termux, with no cloud server needed. I want the phone to act like a managed WiFi hotspot where people connect, get redirected to a captive portal, and can log in with a voucher code or use a free trial. Sessions should be timed and tracked, access should turn off automatically when time expires, and there should be an admin view for managing users, vouchers, payments, analytics, and overall system status.

I also want a local offline intranet on the same device so connected users can open a separate portal for videos, a simple social area, a file and app library, and HTML5 games, all without using internet data. Please include some kind of device fingerprinting that still works even if MAC randomization is on, plus heartbeat monitoring and basic bandwidth control.

Also make a native Android companion app for the operator to start services, monitor live sessions, and view hardware or network telemetry. If needed, look up current docs for rooted Android and Termux.