Incus Manager
The Outpost breaks the Proxmox baseline on purpose. It runs Incus, a container and VM manager suited to workloads that are created and destroyed constantly — the practice forks of the Climb, spun up per learner and thrown away after, and the disposable targets of the live-fire range. Proxmox could do this; Incus does it lighter and faster for ephemeral system containers, which is why the one exception to an otherwise-uniform hypervisor standard lives here.
The Outpost is dual-purpose by design, hosting both the range and the Climb’s forge, tracker, and grader on a single node — a tight fit with little headroom, tracked openly among the open questions in the Hardware Manifest.