WP-0011: deploy scaffolding for revenue.coulomb.social

Record T01 package (in-repo k8s/railiance, combined /ui + API app,
dedicated CNPG). Add Dockerfile, healthz, migration/bootstrap scripts,
kustomize manifests, ArgoCD Application (in railiance-platform), and
docs/deployment.md. T05 left open for operator DNS/OpenBao/image push.

k8s/railiance/deployment.yaml

@@ -0,0 +1,78 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: target-revenue
+  namespace: target-revenue
+  labels:
+    app.kubernetes.io/name: target-revenue
+    app.kubernetes.io/part-of: target-revenue
+  annotations:
+    argocd.argoproj.io/sync-wave: "3"
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: target-revenue
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: target-revenue
+        app.kubernetes.io/part-of: target-revenue
+    spec:
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 10001
+        fsGroup: 10001
+      containers:
+        - name: target-revenue
+          image: forgejo.coulomb.social/coulomb/target-revenue:0.1.0
+          imagePullPolicy: IfNotPresent
+          ports:
+            - name: http
+              containerPort: 8000
+          env:
+            - name: TRF_DATABASE_URL
+              valueFrom:
+                secretKeyRef:
+                  name: target-revenue-runtime
+                  key: TRF_DATABASE_URL
+            - name: TRF_SIGNING_KEY_HEX
+              valueFrom:
+                secretKeyRef:
+                  name: target-revenue-runtime
+                  key: TRF_SIGNING_KEY_HEX
+            - name: TRF_CONTROL_PLANE_SECRET_KEY
+              valueFrom:
+                secretKeyRef:
+                  name: target-revenue-runtime
+                  key: TRF_CONTROL_PLANE_SECRET_KEY
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 10
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: http
+            initialDelaySeconds: 15
+            periodSeconds: 20
+          resources:
+            requests:
+              cpu: 50m
+              memory: 256Mi
+            limits:
+              cpu: 1000m
+              memory: 512Mi
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop: ["ALL"]
+          volumeMounts:
+            - name: tmp
+              mountPath: /tmp
+      volumes:
+        - name: tmp
+          emptyDir: {}