Pod path chased to root cause: MAAS virsh pods incompatible with node-vm volume-ref disks; per-machine power PROVEN working ...

Dedicated MAAS->libvirt key minted+wired (operator-ruled). Two further
measured findings: (1) MAAS dials the pod from the REGION, not the rack, so
the credential belongs where MAAS dials from; (2) each 503 created a broken
pod server-side outside tofu state (both deleted). Final blocker: domblkinfo
fails on pool+volume disk refs -- reproduced LOCALLY on the rack with an
active pool, so it is libvirtd, not snap/SSH. Making pods work would mean
converting node-vm to file-path disks + re-applying 9 domains. Not needed:
the pod's job was discovery, which PXE already did, and per-machine
power_type=virsh query-power-state returns state=off on the canary. Per
machine power is also the Roosevelt shape (IPMI per node). Awaiting ruling.
CURRENT-STATE untouched pending the ruling.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KiUu1oqt76tWvV4vEC3NAr

Step D part 2: MAAS root shipped; apply refutes D-123's local qemu:///system pod mechanism ...

New opentofu/vr1-dc0-maas root (isolates MAAS creds from substrate roots
per DOCFIX-179's lesson); plan clean, apply failed 'Failed to login to
virsh console'. MEASURED root cause: confined MAAS snap gets Permission
denied on libvirt-sock and ships NO libvirt interface to connect -- a local
qemu:///system pod is architecturally impossible with snap MAAS. D-123
Model B and modules/maas-vm-host both state that mechanism; intent (no
cross-fiber dial) survives, mechanism does not. Amendment pending a ruling.
qemu+ssh replacement measured feasible (snap ships ssh; rack user in
libvirt group). Nothing was created by the failed apply.
CURRENT-STATE updated in this commit (GA-R1/C1).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KiUu1oqt76tWvV4vEC3NAr