fix: separate monitoring from controllers so broken prometheus-stack doesn't block tailnet chain

clusters/devops-lab/infra-monitoring.yaml

@@ -0,0 +1,18 @@
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: infrastructure-monitoring
+  namespace: flux-system
+spec:
+  interval: 1m0s
+  retryInterval: 1m
+  timeout: 5m
+  sourceRef:
+    kind: GitRepository
+    name: flux-system
+  path: ./infrastructure/controllers/staging/monitoring
+  prune: true
+  decryption:
+    provider: sops
+    secretRef:
+      name: sops-age

infrastructure/controllers/staging/kustomization.yaml

@@ -3,5 +3,4 @@ kind: Kustomization
 resources:
   - cnpg/
   - keda/
-  - monitoring/
   - tailscale/