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nok8s: the no-Kubernetes path renders the full Kubernetes manifest set and warns three times that helm/skopeo are missing #1704

Description

@UgaTheDev

Environment: commit 2c1e326; macOS 15 (Darwin 25.3.0) / Python 3.13.7 /
Docker 29.1.5; no Kubernetes cluster, no GPU; helm, helmfile, yq, kind, podman
absent. Reproduced in a venv with pip install -e . plus
llm-d-planner v0.1.0.

Every nok8s invocation (plan, standup, run, teardown) emits:

Could not resolve WVA image tag: Unable to resolve latest tag for image "ghcr.io/llm-d/llm-d-workload-variant-autoscaler". Ensure skopeo, crane, or podman is installed and the image exists.
Could not resolve chart version for llmDInfra: Unable to resolve chart version for "llmDInfra". Ensure helm is installed and the repository is added, or provide a valid repo URL.
Could not resolve chart version for llmDModelservice: Unable to resolve chart version for "llmDModelservice". Ensure helm is installed and the repository is added, or provide a valid repo URL.
3 version(s) could not be resolved: wva.image.tag, chartVersions.llmDInfra, chartVersions.llmDModelservice. These will remain as 'auto' and must be resolved before deployment.

"must be resolved before deployment" is false on this path: nothing consumes
those chart versions, and docs/nok8s.md:41-42 states helm/helmfile are not
required. A user following the docs is told they are missing tools they were just
told they do not need.

Relatedly, the render writes 36 files per nok8s stack, with real content in
Kubernetes-only manifests that will never be applied:
05_namespace_sa_rbac_secret.yaml (108 lines), 13_ms-values.yaml (161),
20_harness_pod.yaml (117), 10_helmfile-main.yaml, 04_download_job.yaml,
08_httproute.yaml, 18_podmonitor.yaml, 01/02_pvc_*.yaml.
render_plans.py:1664-1668 already computes is_nok8s to skip cluster-resource
resolution; the same flag could gate version resolution and the k8s template set.


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