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-metrics-agent/0.40.0/Chart.yaml

@@ -0,0 +1,46 @@
+annotations:
+  artifacthub.io/category: monitoring-logging
+  artifacthub.io/changes: |
+    - bump version of VM components to [v1.144.0](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.144.0)
+  artifacthub.io/license: Apache-2.0
+  artifacthub.io/links: |
+    - name: Sources
+      url: https://github.com/VictoriaMetrics/helm-charts/tree/master/charts/victoria-metrics-agent
+    - name: Charts repo
+      url: https://victoriametrics.github.io/helm-charts/
+    - name: Docs
+      url: https://docs.victoriametrics.com/victoriametrics/vmagent/
+    - name: Changelog
+      url: https://docs.victoriametrics.com/victoriametrics/changelog/
+  artifacthub.io/readme: |
+    # VictoriaMetrics Agent Helm chart
+
+    Chart documentation is available [here](https://docs.victoriametrics.com/helm/victoria-metrics-agent/).
+    Changelog is [here](https://docs.victoriametrics.com/helm/victoria-metrics-agent/changelog/).
+apiVersion: v2
+appVersion: v1.144.0
+dependencies:
+- name: victoria-metrics-common
+  repository: oci://ghcr.io/victoriametrics/helm-charts
+  version: 0.3.*
+description: VictoriaMetrics Agent - collects metrics from various sources and stores
+  them to VictoriaMetrics
+home: https://github.com/VictoriaMetrics/helm-charts
+icon: https://avatars.githubusercontent.com/u/43720803?s=200&v=4
+keywords:
+- victoriametrics
+- vmagent
+- agent
+- collector
+- monitoring
+- kubernetes
+- observability
+- metrics
+- timeseries
+- servicediscovery
+kubeVersion: '>=1.25.0-0'
+name: victoria-metrics-agent
+sources:
+- https://github.com/VictoriaMetrics/helm-charts
+type: application
+version: 0.40.0