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.

authentik/k8s/authentik.yaml

@@ -34,6 +34,8 @@ spec:
   selector:
     matchLabels:
       app: authentik-server
+  strategy:
+    type: Recreate
   template:
     metadata:
       labels:
@@ -53,7 +55,7 @@ spec:
           resources:
             requests:
               memory: "768Mi"
-              cpu: "300m"
+              cpu: "100m"
             limits:
               memory: "1.5Gi"
               cpu: "1000m"
@@ -68,6 +70,8 @@ spec:
   selector:
     matchLabels:
       app: authentik-worker
+  strategy:
+    type: Recreate
   template:
     metadata:
       labels:
@@ -87,7 +91,7 @@ spec:
           resources:
             requests:
               memory: "320Mi"
-              cpu: "300m"
+              cpu: "100m"
             limits:
               memory: "768Mi"
               cpu: "700m"