Same ArgoCD + SSA self-heal loop pattern as guacamole (20e4130):
K8s defaults volumeMode=Filesystem on volumeClaimTemplates at
creation, git omits it, argocd-controller owns the atomic list so
every reconcile sees drift, and volumeClaimTemplates is immutable
so it can never reconcile. Adding the field closes both loops.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>