Support pluggable on-prem Nx Agent executors beyond Kubernetes Pods (CRDs / custom infrastructure)

[aidanleuck]

Summary

Please add support for pluggable execution backends for on-prem Nx Agents so workloads can run on infrastructure other than Kubernetes Pods (for example, custom CRDs or VMs).

Problem

Our platform provisions compute through internal CRDs/VM workflows, not direct Pod runners. Current Nx Agent orchestration appears pod-centric, which limits adoption in our environment.

Example (Kubevirt VMs).

We don't expect that Nx would provide the code for Kubevirt runners, but as is I don't see any indication that we can write custom providers/plugins to allow us to control other types of agents. Please correct me if I am wrong in this assumption.

Request

Provide a configurable executor provider model, with:

pod as default (current behavior)
support for crd / vm / custom provider plugins