Context

New to DevOps and GitOps. Suppose that I have decoupled development from deployment. The application code (a machine learning web app) is in a the application repository and the Kubernetes manifest (yaml files) to deploy it are in the manifest repository (both on GitLab).

My understanding was ArgoCD is typically used to pull the latest yaml files from manifest repository and kubectl apply them. But recently, I got some vague instructions from a new boss saying something along the line of

1. Configure ArgoCD to monitor the application repository for changes.
2. Configure ArgoCD to the manifest repository
3. Configure ArgoCD to always pull the latest image when an image is pushed for blue-green deployment

Questions

2 above is quite clear to me, which I have done previously. I believe 3 can be done by the image updater extension. But 1 above is not clear to me, in general what it means and implies. Does it mean some other tool has to be thrown in the mix other than Argo, Docker and minikube?