eylandoo/openvpn_webpanel_manager ? reverse-engineered prompt

Build me a self hosted VPN management panel that lets an admin control OpenVPN, Cisco AnyConnect, L2TP/IPsec, and WireGuard from one place.

I want a clean dashboard where I can add users one at a time or in bulk, set data limits, expiry dates, and connection limits, then see live usage and turn access on or off quickly. It should also support reseller accounts with their own limits, and a multi node setup so I can manage several servers from one main panel and check node health.

Make it easy to install on Ubuntu with a simple manager script, and include backup and restore, basic server settings, SSL handling, and the ability to change the panel port and admin login. Please include a secure API for automating user management too. Use a modern simple UI that looks good on desktop and mobile, and if you need anything current from the docs, look it up online first.