Measured this session: office1-netbox + office1-tailscale (LXD VMs inside
voffice1) both already carry boot.autostart=true (confirms the D-127
guest-update note; no change made). Documents the autostart chain now proven
end to end -- vcloud->voffice1/edge via virsh autostart; voffice1->netbox/
tailscale via LXD boot.autostart -- so a host reboot self-recovers Office1.

Revert: `git revert <this>` (doc-only).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CsPuN3nSP1EMzkBhh8KJQt