Add VictoriaMetrics observability stack + sync catalog for monitoring test

- VM stack 10 charts: victoria-metrics-cluster/auth, victoria-logs-cluster,
  victoria-metrics-agent/alert, opentelemetry-collector, kube-state-metrics,
  prometheus-node-exporter, alertmanager, perses (JWT/OIDC, Infisical-ready)
- ArgoCD ApplicationSet (syncWave) + per-chart dip-values overlays
- doc/victoria-metrics-architecture.md, define-chart-resources updates
- includes pending working-tree changes (mlflow, kubeflow, apisix, CLAUDE.md)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

manifests/helm/victoria-logs-cluster/0.1.5/templates/NOTES.txt

@@ -0,0 +1,33 @@
+{{- if .Values.printNotes }}
+{{- $ctx := dict "helm" . "style" "plain" }}
+{{- $ns := include "vm.namespace" $ctx }}
+{{- if .Values.vlinsert.enabled }}
+{{- if .Values.vmauth.enabled }}
+  {{- $_ := set $ctx "appKey" "vmauth" }}
+{{- else }}
+  {{- $_ := set $ctx "appKey" "vlinsert" }}
+{{- end }}
+{{- $fullname := include "vm.plain.fullname" $ctx }}
+Write API:
+
+The VictoriaLogs ingest APIs can be accessed with the following url:
+{{ include "vm.url" $ctx }}
+
+Check how to ingest data in https://docs.victoriametrics.com/victorialogs/data-ingestion/
+{{- end }}
+
+{{- if .Values.vlselect.enabled }}
+{{- if .Values.vmauth.enabled }}
+  {{- $_ := set $ctx "appKey" "vmauth" }}
+{{- else }}
+  {{- $_ := set $ctx "appKey" "vlselect" }}
+{{- end }}
+{{- $fullname := include "vm.plain.fullname" $ctx }}
+Read API:
+
+The VictoriaLogs query APIs can be accessed with the following url:
+{{ include "vm.url" $ctx }}
+
+Check how to query data in https://docs.victoriametrics.com/victorialogs/querying/
+{{- end }}
+{{- end }}