The original error always prescribed cluster recreate. When the running
cluster already has an umbrella at /mnt, that's misleading — the right
fix is to align the new deployment to the existing umbrella (set
kind-mount-root to the cluster's umbrella source and move host paths
under it). Recreate is only correct when no umbrella exists.
Branch the error message on whether the cluster has a /mnt bind. With
umbrella: show its host source and tell the user to set kind-mount-root
to that value. Without: keep the recreate guidance.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>