Accepted decision to implement ADR-008 Level 2/3 on ubongo via
libvirt/KVM directly: throwaway VM overlays, stdlib-only driver,
tiered cert fidelity, three safety invariants. Addresses the
2026-06-17 mesh-hardening incident's reboot-survivability gap.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
