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/Chart.lock

@@ -0,0 +1,9 @@
+dependencies:
+- name: vector
+  repository: https://helm.vector.dev
+  version: 0.52.0
+- name: victoria-metrics-common
+  repository: oci://ghcr.io/victoriametrics/helm-charts
+  version: 0.3.0
+digest: sha256:2ed29f6e03ca10a4d2d316bdff3fbbea4c23229718ab7bc409a16055aa8abed8
+generated: "2026-04-23T05:14:26.335754154Z"