fix(bootstrap): deploy validated bootstrap-k0s runtime

[jmgilman]

Summary

• consume ghcr.io/gilmanlab/platform/bootstrap-k0s:0.2.1
• move bootstrap-k0s runtime data off VyOS /config overlay and onto ext4-backed persistence
• fix the IncusOS artifact server container command so the Python image starts correctly

Validation

• moon run network-vyos:check --summary minimal
• moon run compute-incusos:check --summary minimal
• clean VyOS deploy from wiped bootstrap-k0s state: ansible-playbook ansible/playbooks/deploy.yml completed ok=50 changed=25 failed=0
• bootstrap-k0s.service active with bootstrap-k0s:0.2.1
• k0s node Ready; all bootstrap deployments 1/1; CAPI, Talos bootstrap, Talos control-plane, and CAPN providers READY=True
• Tinkerbell bound to 10.10.20.1:7080, 10.10.20.1:42113, 10.10.20.1:2222, and UDP 10.10.20.1:69