feat(WP-0018/R6): Helm chart and runbook for Railiance01 deployment

Helm chart at deploy/helm/inter-hub/ with Deployment, Service, Ingress
(Traefik + letsencrypt-prod), and migration init container. Runbook at
deploy/railiance/RUNBOOK.md with build, push, rotate, rollback procedures.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

deploy/helm/inter-hub/templates/deployment.yaml

@@ -0,0 +1,52 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Release.Name }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app: {{ .Release.Name }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app: {{ .Release.Name }}
+    spec:
+      initContainers:
+        {{- if .Values.runMigrations }}
+        - name: migrate
+          image: {{ .Values.image.repository }}:{{ .Values.image.tag }}
+          command: ["/bin/App", "migrate"]
+          envFrom:
+            - secretRef:
+                name: {{ .Values.envFrom.secretRef }}
+        {{- end }}
+      containers:
+        - name: inter-hub
+          image: {{ .Values.image.repository }}:{{ .Values.image.tag }}
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - containerPort: 8000
+              protocol: TCP
+          envFrom:
+            - secretRef:
+                name: {{ .Values.envFrom.secretRef }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          readinessProbe:
+            httpGet:
+              path: /
+              port: 8000
+            initialDelaySeconds: 15
+            periodSeconds: 10
+            failureThreshold: 3
+          livenessProbe:
+            httpGet:
+              path: /
+              port: 8000
+            initialDelaySeconds: 30
+            periodSeconds: 30
+            failureThreshold: 3