parameters is immutable on StorageClass, so ArgoCD's default patch sync kept failing after the nodeSelector removal ("field is immutable"). Same fix already used by longhorn-cnpg-storageclass.yaml.
Longhorn's StorageClass nodeSelector matches node tags (nodes.longhorn.io spec.tags), not k8s hostnames - "talos-cp-3" was never set as a node tag, so every PVC provision attempt failed with "specified node tag talos-cp-3 does not exist". diskSelector: paperless-media already pins placement correctly on its own.
Fixes controlplane.tftpl's install.wipe:true (should be false, live CPs already run false) and syncs coredns Corefile back to what's actually deployed (drops an unrolled-out, stale Kong-era rewrite).