Hanut Singh Gusain

First off, that seems like a pretty solid draft. That being said, you might want to give the following some thought -

1. Build the frontend in Next.js and use rest calls to a separate api server.
2. Use Nest.js to create your api layer. It supports Prisma and is a really mature framework.
3. If most of your apps functionality is auth walled (ie. users need to be logged in to see the pages) you might find Remix interesting as it gives you a must more performant alternative to Next.js for the frontend.

Nest.js + fastify is a great way to develop pretty much anything you want quickly but it would be helpful if you could share what exactly your proxy dashboard is going to do. You could also look into Fabric/Golang which gives you a familiar express style API to work with for building web apps and APIs.