AmanPathak-DevOps/End-to-End-Kubernetes-Three-Tier-DevSecOps-Project ? reverse-engineered prompt

Build me a complete three tier web app deployment project like this one, with a React frontend, a Node.js backend, and MongoDB for data. I want the whole thing set up to run on AWS EKS, with the infrastructure created through Terraform and the app deployed through Kubernetes manifests.

Please include a Jenkins based CI CD flow that can build, test, scan, and push images to a private registry, then deploy to the cluster automatically. I also want GitOps with ArgoCD, plus monitoring with Prometheus and Grafana so I can see the app and cluster health. If it makes sense, add the usual DevSecOps pieces too, like basic security scanning and clean separation between frontend, backend, and database.

Set it up so I can follow along from the repo and actually use it as a working end to end demo project. If you need to check current docs while building it, go ahead and look things up online.