vericanttech/digital-business-card ? reverse-engineered prompt

Build me a web app where people can sign up, log in, fill out their profile, and create a digital business card they can share with a link or QR code.

I want the card to show the usual contact details plus social links like LinkedIn, WhatsApp, and Instagram, and let users edit their info anytime. It should also have a public profile page, a nice dashboard for the user, and an admin area where I can see and manage users and cards.

Please make it mobile friendly, clean, and easy to use on both English and French. It would be great if users can download their contact info as a vCard and generate a print ready QR code. Use the existing Flask setup in the project, and if you need anything unclear, look up the current docs online before wiring it up.