fix(k8s): Recreate singletons and trim requests for scheduler headroom

RollingUpdate with default maxSurge needs a spare pod the single node does not have (99% CPU requested), so multi-workload restarts end Pending and verify times out. Recreate on all replicas:1 Deployments (immich-server and bentopdf keep RollingUpdate at replicas 2). Also trims CPU/memory requests toward measured use (adguard, authentik, gitea, netbox, uptime-kuma, netbird-server) and gives traefik requests/limits so it is no longer BestEffort.

traefik/k8s/traefik-values.yaml

@@ -36,6 +36,16 @@ additionalVolumeMounts:
   - name: plugins
     mountPath: /plugins-storage
 
+# BestEffort (no requests) meant kubelet squeezed traefik first under node
+# pressure, down to /ping timeouts and liveness restarts. Burstable instead.
+resources:
+  requests:
+    cpu: "200m"
+    memory: "256Mi"
+  limits:
+    cpu: "1000m"
+    memory: "1Gi"
+
 providers:
   kubernetesIngress:
     enabled: true