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/logs/helm.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+# Deploy the pod-log collector (vlagent DaemonSet) that ships container logs to the
+# VLSingle instance created by ./vlsingle.yaml. Apply vlsingle.yaml first.
+set -euo pipefail
+
+kubectl apply -f vlsingle.yaml
+
+helm repo add vm https://victoriametrics.github.io/helm-charts/
+helm repo update vm
+
+# Pin --version after the first install (helm search repo vm/victoria-logs-collector --versions).
+helm upgrade --install victoria-logs-collector vm/victoria-logs-collector \
+  --namespace monitoring \
+  --values collector-values.yaml \
+  --wait