Establish clean homelab infrastructure baseline

Reorganize the brownfield repository, remove retired and generated artifacts, harden ignore rules, and record the GitOps/IaC redesign.

platform/observability/operator/helm.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+# Install / upgrade the VictoriaMetrics operator into the monitoring namespace.
+# The operator owns the VM* + VLSingle CRDs that everything else in this folder relies on.
+set -euo pipefail
+
+kubectl apply -f ../namespace.yaml
+
+helm repo add vm https://victoriametrics.github.io/helm-charts/
+helm repo update vm
+
+# Pin the chart version after the first install for reproducibility:
+#   helm search repo vm/victoria-metrics-operator --versions | head
+# then add:  --version <x.y.z>
+helm upgrade --install vm-operator vm/victoria-metrics-operator \
+  --namespace monitoring \
+  --values values.yaml \
+  --wait
+
+# CRDs land cluster-wide; verify:
+#   kubectl get crd | grep victoriametrics