PERF(observability): optimize resources via VPA

- alertmanager: CPU 15m/15m, memory 100Mi/100Mi
- blackbox-exporter: CPU 15m/32m, memory 100Mi/100Mi
- goldilocks: controller 15m/25m, dashboard 15m/15m
- grafana: CPU 22m/24m, memory 144Mi/242Mi (upperBound)
- kube-state-metrics: CPU 15m/15m, memory 100Mi/100Mi
- loki: CPU 10m/69m, memory 225Mi/323Mi
- node-exporter: CPU 15m/15m, memory 100Mi/100Mi
- opentelemetry: CPU 34m/410m, memory 142Mi/1024Mi
- prometheus-operator: CPU 15m/15m, memory 100Mi/100Mi
- tempo: CPU 15m/15m, memory 100Mi/109Mi
- thanos: CPU 15m/15m, memory 100Mi/126Mi
- vpa: CPU 15m/15m, memory 100Mi/100Mi

loki/helm-values.yaml

@@ -60,12 +60,14 @@ singleBinary:
       mountPath: /var/loki
   # Medium priority for observability
   priorityClassName: medium-priority
+  # Resource settings (VPA lowerBound/target)
   resources:
     requests:
-      cpu: 63m
-      memory: 363Mi
+      cpu: 10m
+      memory: 225Mi
     limits:
-      memory: 363Mi
+      cpu: 69m
+      memory: 323Mi
 
 # Disable components not needed in single binary mode
 backend: