Revert "feat(cleanup): remove all Kubernetes and kubectl references, aliases, and completions"

This reverts commit 5d2a23db88.

.config/fish/conf.d/dev-helpers.fish

@@ -13,6 +13,13 @@ function docker-cleanup
     docker volume prune -f
 end
 
+# Kubernetes context info
+function kinfo
+    echo "Context: "(kubectl config current-context)
+    echo "Namespace: "(kubectl config view --minify -o jsonpath='{..namespace}')
+    kubectl get nodes --no-headers | wc -l | xargs echo "Nodes:"
+end
+
 # Quick YAML validation
 function yaml-check
     python3 -c "import yaml; yaml.safe_load(open('$argv[1]'))"