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/vlsingle.yaml

@@ -0,0 +1,25 @@
+# Single-node VictoriaLogs, managed by the same VM operator as the metrics stack.
+# Service exposed by the operator: vlsingle-main.monitoring.svc:9428
+# Query via Grafana (VictoriaLogs datasource) with LogsQL.
+# NOTE: the VictoriaLogs/Traces CRDs are served under .../v1 (metrics CRDs use v1beta1).
+apiVersion: operator.victoriametrics.com/v1
+kind: VLSingle
+metadata:
+  name: main
+  namespace: monitoring
+spec:
+  retentionPeriod: "30d"
+  storage:
+    accessModes:
+      - ReadWriteOnce
+    storageClassName: localpv-zfs-ceph
+    resources:
+      requests:
+        storage: 30Gi
+  resources:
+    requests:
+      cpu: 100m
+      memory: 256Mi
+    limits:
+      cpu: "1"
+      memory: 2Gi