simpler check and deps messages

rig/ctrl/k8s/kind-config.yaml.tpl

@@ -1,24 +1,12 @@
-# The cluster. One node by default — add nodes or port mappings by editing this
-# file, then `make cluster reset`.
-#
-# A TEMPLATE rather than a plain kind-config.yaml because a rig is copied and
-# renamed to make a second environment, and both the cluster name and the host
-# port follow the directory. A checked-in literal would make every copy collide
-# on both. ctrl/cluster.sh renders it with sed — not envsubst, which is
-# gettext-base and absent from a minimal Debian, and rig's whole premise is that
-# Docker is the only prerequisite.
-#
-# Substituted by ctrl/cluster.sh: CLUSTER, NODE_IMAGE, HTTP_PORT, HOST_WORKDIR
-# (named without the ${...} braces so this line survives the substitution)
-# The node count is READ BACK from this file by lib/config.sh, so this YAML is
-# the source of truth for it — there is no second place to update.
+# The cluster. Add nodes or port mappings here, then `make cluster reset`.
+# ctrl/cluster.sh substitutes (sed): CLUSTER, NODE_IMAGE, HTTP_PORT, HOST_WORKDIR
+# lib/config.sh reads the node count back from this file.
+# Notes: docs/notes/kind-config.md
 kind: Cluster
 apiVersion: kind.x-k8s.io/v1alpha4
 name: ${CLUSTER}
 
-# Point containerd at a certs.d directory. registry.sh drops per-host hosts.toml
-# files in there afterwards, so switching registry mode never requires
-# recreating the cluster.
+# containerd reads per-host registry config from certs.d (written by registry.sh).
 containerdConfigPatches:
   - |-
     [plugins."io.containerd.grpc.v1.cri".registry]
@@ -27,9 +15,7 @@ containerdConfigPatches:
 nodes:
   - role: control-plane
     image: ${NODE_IMAGE}
-    # One NodePort bridged to the host; an in-cluster gateway owns it. There is
-    # deliberately no ingress controller — they pin a narrow window of k8s
-    # versions, and running a trailing-edge control plane is the point.
+    # One NodePort bridged to the host, owned by an in-cluster gateway (no ingress controller).
     extraPortMappings:
       - containerPort: 30080
         hostPort: ${HTTP_PORT}