commoodor/AIBILL-RADIUS ? reverse-engineered prompt

Build me a modern billing system for an RTRW.NET ISP, with an admin dashboard that feels fast, clean, and easy to use on mobile too. I want it to handle PPPoE users, hotspot vouchers, reseller agents, invoices, payments, active sessions, routers and NAS, company settings, and WhatsApp notifications. It should have a premium looking interface with dark mode, smooth page transitions, tables, forms, modals, and a sidebar navigation for all the main modules.

Please make sure all date handling is correct for WIB, store everything in UTC in the database, and display it properly in Western Indonesia Time everywhere in the app. Also set it up so the root page sends users to the admin area.

Use a modern full stack setup with Next.js, TypeScript, Tailwind, Prisma, and MySQL. If you need to check current docs online for anything, go ahead. I also want the project organized so it can be extended later with authentication, API routes, payment gateway integration, and FreeRADIUS connection.