JARVIS f57e0bef02 feat(day0): promote expand_root_lv to a canonical day0 step ...

The half-disk LV pattern affects ~90% of mk-labs VMs. Treating the
fix-up as application-specific (as it was in day1_deploy_honcho.yml)
means future deploys would each carry the same boilerplate, and any
day1 author could forget it.

This commit:

  * Adds playbooks/day0_expand_root_lv.yml — standalone day0 step,
    targets {{ target | default("all") }}, honors a per-host
    expand_root_lv_skip opt-out for multi-LV layouts.

  * Adds playbooks/day0_provision.yml — umbrella playbook chaining
    day0_linux_baseline + day0_expand_root_lv, so the operator runs
    ONE command per new VM.

  * Removes expand_root_lv from day1_deploy_honcho.yml — day0 is
    assumed complete before day1 begins (cleaner separation of
    concerns, matches the convention day1_deploy_semaphore already
    follows).

  * Updates the role README to document the lifecycle position and
    the opt-out flag for hosts with multi-LV plans.

2026-05-30 23:08:35 -05:00

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