Wildcard cert was left on letsencrypt-staging; staging root is not
browser-trusted so HTTPS to *.riotpiao.com fails cert validation.
Switch issuerRef to letsencrypt-prod to issue a trusted wildcard.
Recreate ingress-nginx-controller LoadBalancer service that was deleted.
Add to k8s/bootstrap/ingress/ kustomization for ArgoCD management.
LoadBalancer assigned IP: 192.168.1.160 (via MetalLB)
ArgoCD now accessible via: https://192.168.1.160/ (or update DNS)