feat: spread management-service pods across nodes via topologySpreadConstraints

3-9 replicas (HPA) previously relied on implicit scheduler spreading.
ScheduleAnyway (not DoNotSchedule) so pods still get scheduled if a node
is briefly unavailable, just less evenly.

k8s/sqs/charts/management-service/templates/deployment.yaml

@@ -13,6 +13,13 @@ spec:
       labels:
         app: management-service
     spec:
+      topologySpreadConstraints:
+        - maxSkew: 1
+          topologyKey: kubernetes.io/hostname
+          whenUnsatisfiable: ScheduleAnyway
+          labelSelector:
+            matchLabels:
+              app: management-service
       containers:
         - name: management-service
           image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"