Persists the exact gated sequence to close the last bookend item: apt
full-upgrade onto kernel 6.8.0-136 (pending in apt, not installed; running
-134) then reboot. Ordered patch-with-VMs-up -> quiesce -> reboot; STEP 4
ends the session. Records the preconditions measured 2026-07-17: both
foundational VMs autostart=enable, libvirt-guests default suspend (so
explicit virsh shutdown for the verified cold-boot path), no qemu/libvirt in
the pending set. Includes post-reboot verify feeding section D.

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