Secrets are now committed encrypted (sealed-secrets v0.38.4) instead of
hand-applied out-of-band, closing the config-DR gap the backups intentionally
don't cover. Existing Secret adopted via the managed annotation (values verified
unchanged). Controller private key backed up GPG-encrypted off-cluster.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>