diff --git a/deploy/k8s/activity-core-llm-connect/README.md b/deploy/k8s/activity-core-llm-connect/README.md
index cc78139..39d0b8e 100644
--- a/deploy/k8s/activity-core-llm-connect/README.md
+++ b/deploy/k8s/activity-core-llm-connect/README.md
@@ -3,6 +3,10 @@
 This overlay deploys `llm-connect` as an internal `activity-core` namespace
 service for daily WSJF triage.
 
+**Target cluster:** `railiance01` only (`KUBECONFIG=~/.kube/config-hosteurope`).
+The legacy coulombcore copy was removed 2026-07-08 after production cutover
+(`ACTIVITY-WP-0010`); do not re-apply this overlay to coulombcore.
+
 Stable in-cluster URL after apply:
 
 ```text