README.md

Nebula docs

• architecture.md — the design: scheduling gates, virtual nodes, NodePool and NodeClaim.
• deploy.md — installing the manager, provider credentials, manager flags.
• status.md — how an instance's lifecycle becomes Pod and NodeClaim status.
• kubelet-api.md — kubectl logs and kubectl exec against a Pod with no kubelet.
• metrics.md — what is instrumented, and how to query it.
• add-a-provider.md — adding a provider backend.