PERF(grafana): optimize cpu requests based on actu

- code-server: 50m → 5m (actual: 1m)
- docusaurus: 50m → 5m (actual: 1m)
- kubernetes-dashboard: 15m → 5m (actual: 1m)
- kubernetes-dashboard-metrics-scraper: 50m → 5m (actual: 1m)
- homer: 50m → 5m (actual: 1m)
- umami: 30m → 5m (actual: 1m)
- gitea: 50m → 10m (actual: 5m)

gitea/helm-values/gitea.yaml

@@ -158,7 +158,7 @@ ingress:
 # Resource limits
 resources:
   requests:
-    cpu: 50m
+    cpu: 10m  # Reduced from 50m based on actual usage (5m)
     memory: 256Mi
   limits:
     memory: 512Mi