On first boot, generated host keys are saved to ~/.ssh/host_keys/ on
the persistent home PVC. On subsequent boots they are restored, so SSH
clients never see a "host key changed" warning after a pod restart.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Without explicit --user-data-dir and --extensions-dir, Antigravity may
default to a path outside /home and lose settings on restart, causing
the setup wizard to reappear. Pinning both to $HOME ensures they land
on the persistent home PVC.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>