diff --git a/.github/workflows/build-push-quay.yaml b/.github/workflows/build-push-quay.yaml
index 70c2ec4..68cdf49 100644
--- a/.github/workflows/build-push-quay.yaml
+++ b/.github/workflows/build-push-quay.yaml
@@ -1,9 +1,11 @@
 name: Build and Push Image
 
 on:
-  push:
-    branches: [main, 'release/v*']
-    tags: ['v*']
+  # Automatic builds disabled — placement-manager is merged into control-plane.
+  # Images: quay.io/dcm-project/control-plane (see control-plane repo).
+  # push:
+  #   branches: [main, 'release/v*']
+  #   tags: ['v*']
   workflow_dispatch:
     inputs:
       version:
diff --git a/README.md b/README.md
index ccd01fc..4d6add7 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,15 @@
-# DCM Placement Manager
+# DCM Placement Manager (archived)
+
+> [!WARNING]
+> **This repository is archived and read-only.** Do not open PRs here.
+>
+> All active development moved to the
+> [control-plane](https://github.com/dcm-project/control-plane) monolith.
+
+---
+
+<details>
+<summary><strong>Legacy README</strong> (historical reference only)</summary>
 
 DCM Placement Manager is a Go service that orchestrates resource provisioning within the DCM ecosystem.
 On receiving a creation request, the DCM Placement Manager evaluates the spec against
@@ -297,3 +308,5 @@ in shared-workflows for the full release process, tag behavior, and version conv
 ## License
 
 Apache License 2.0. See [LICENSE](LICENSE) for details.
+
+</details>