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/route.yaml

@@ -0,0 +1,43 @@
+{{- $ctx := dict "helm" . }}
+{{- range $name, $app := .Values }}
+{{- if and (kindIs "map" $app) $app.enabled ($app.route).enabled }}
+{{- $route := $app.route }}
+{{- $_ := set $ctx "extraLabels" $route.extraLabels }}
+{{- $_ := set $ctx "appKey" $name }}
+{{- $fullname := include "vm.plain.fullname" $ctx }}
+---
+apiVersion: {{ $route.apiVersion | default "gateway.networking.k8s.io/v1" }}
+kind: {{ $route.kind | default "HTTPRoute" }}
+metadata:
+  name: {{ $fullname }}
+  namespace: {{ include "vm.namespace" $ }}
+  labels: {{ include "vm.labels" $ctx | nindent 4 }}
+  {{- with $route.annotations }}
+  annotations: {{ tpl (toYaml .) $ | nindent 4 }}
+  {{- end }}
+spec:
+  {{- with $route.parentRefs }}
+  parentRefs: {{ toYaml . | nindent 4 }}
+  {{- end }}
+  {{- with $route.hostnames }}
+  hostnames: {{ tpl (toYaml .) $ | nindent 4 }}
+  {{- end }}
+  rules:
+    {{- with $route.extraRules }}
+    {{- tpl (toYaml .) $ | nindent 4 }}
+    {{- end }}
+    - backendRefs:
+        - name: {{ $fullname }}
+          port: {{ $route.port | default (include "vm.port.from.flag" (dict "flag" ($app.extraArgs).httpListenAddr)) }}
+          group: ''
+          kind: Service
+          weight: 1
+      {{- with $route.filters }}
+      filters: {{ toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with $route.matches }}
+      matches: {{ tpl (toYaml .) $ | nindent 8 }}
+      {{- end }}
+
+{{- end }}
+{{- end }}