Add JSON schema generation for kubeconform CRD validation

- ci/generate-schemas.sh extracts schemas from live cluster CRDs via kubectl
- Generated schemas committed to schemas/ for CI use
- Run `make schemas` to regenerate after CRD or K8s version changes
- validate-apps.sh and validate-clusters.sh check local schemas first
- Remove all kubeconform skip lists — all resource types now have schemas

ci/validate-clusters.sh

@@ -3,7 +3,10 @@ set -euo pipefail
 
 KUBE_VERSION="1.33.7"
 
+SCHEMA_DIR="${SCHEMA_DIR:-schemas}"
+
 schema_args=(
+  -schema-location "$SCHEMA_DIR/{{.Group}}/{{.ResourceKind}}_{{.ResourceAPIVersion}}.json"
   -schema-location "https://artifactapi.k8s.syd1.au.unkin.net/api/v1/remote/github_user/yannh/kubernetes-json-schema/master/{{.NormalizedKubernetesVersion}}-standalone{{.StrictSuffix}}/{{.ResourceKind}}{{.KindSuffix}}.json"
   -schema-location "https://artifactapi.k8s.syd1.au.unkin.net/api/v1/remote/github_user/datreeio/CRDs-catalog/main/{{.Group}}/{{.ResourceKind}}_{{.ResourceAPIVersion}}.json"
 )
@@ -18,6 +21,6 @@ while IFS= read -r -d "" k; do
         -summary \
         -output pretty \
         -verbose \
-        -skip CustomResourceDefinition \
+        \
         "${schema_args[@]}"
 done < <(find clusters -name kustomization.yaml -print0)