Declare scoped activity-core ArgoCD adoption

Assistant: codex
Assistant-Model: gpt-6-astra
Assistant-Session: 01a0e241-8285-7a63-8c0c-51c9cb824dc3

argocd/railiance01/applications/activity-core.application.yaml

@@ -0,0 +1,23 @@
+# ACTIVITY-WP-0041 / RPF-WP-0048: founder-authorized adoption, 2026-09-27.
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: activity-core
+  namespace: argocd
+  labels:
+    app.kubernetes.io/part-of: railiance-gitops
+spec:
+  project: activity-core
+  source:
+    repoURL: https://forgejo.coulomb.social/coulomb/activity-core.git
+    targetRevision: c12a8fbcfbd0624e195a0183f8b7ca5ce2bc07d5
+    path: k8s/gitops
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: activity-core
+  syncPolicy:
+    syncOptions:
+      - CreateNamespace=false
+      - ApplyOutOfSyncOnly=true
+      - PruneLast=true
+      - FailOnSharedResource=true