Add ArgoCD Application for target-revenue Trust Service

WP-0011: sync coulomb/target-revenue path k8s/railiance into namespace
target-revenue (revenue.coulomb.social). Requires image, OpenBao secrets,
and DNS before a healthy sync — see target-revenue docs/deployment.md.

argocd/applications/target-revenue.application.yaml

@@ -0,0 +1,29 @@
+# Target Revenue Trust Service + Control Plane (WP-0011).
+# Source of truth: coulomb/target-revenue k8s/railiance (issue-core pattern).
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: target-revenue
+  namespace: argocd
+  labels:
+    app.kubernetes.io/part-of: railiance-gitops
+    railiance.io/domain: target-revenue
+  annotations:
+    argocd.argoproj.io/sync-wave: "10"
+spec:
+  project: railiance-tenants
+  source:
+    repoURL: https://forgejo.coulomb.social/coulomb/target-revenue.git
+    targetRevision: main
+    path: k8s/railiance
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: target-revenue
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true
+      - ApplyOutOfSyncOnly=true
+      - PruneLast=true