chore: maintenance mode — restrict renovate to security updates only

Co-authored-by: andypitcher <12878731+andypitcher@users.noreply.github.com>
Agent-Logs-Url: https://github.com/rancher/cis-operator/sessions/d64a7af9-2ec0-4c94-b4d1-8fe8a70f222a

Author: Copilot

.github/renovate.json

@@ -10,6 +10,11 @@
     "github.com/rancher/lasso"
   ],
   "packageRules": [
+    {
+      "matchBaseBranches": ["main"],
+      "matchUpdateTypes": ["major", "minor", "patch", "digest", "pin", "pinDigest"],
+      "enabled": false
+    },
     {
       "matchBaseBranches": ["release/v1.4"],
       "extends": ["github>rancher/renovate-config//rancher-2.11#release"]

README.md

@@ -1,19 +1,28 @@
-# cis-operator [![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/rancher/cis-operator/badge)](https://scorecard.dev/viewer/?uri=github.com/rancher/cis-operator)
+# cis-operator [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/rancher/cis-operator/badge)](https://scorecard.dev/viewer/?uri=github.com/rancher/cis-operator)
 
 The cis-operator enables running CIS benchmark security scans on a Kubernetes cluster and generate compliance reports that can be downloaded.
-Benchmarks tests and the execution logic lives on [rancher/security-scan].
+Benchmarks tests and the execution logic lives on [rancher/security-scan](https://github.com/rancher/security-scan).
 
-## Building
+> [!IMPORTANT]
+> **This project has been replaced by [rancher/compliance-operator](https://github.com/rancher/compliance-operator).**
+> It is now in a **Security Maintenance Phase** for Rancher 2.10 and 2.11. No new features will be added.
 
-`make`
+## Migration
+For Rancher v2.12.0+, the legacy CIS Benchmark App is replaced by the new **[Rancher Compliance App](https://ranchermanager.docs.rancher.com/how-to-guides/advanced-user-guides/compliance-scan-guides)**. Please follow the official guide to migrate your custom profiles:
 
+👉 **[Migration Guide: CIS Benchmark to Rancher Compliance](https://support.scc.suse.com/s/kb/Migrating-from-Rancher-CIS-Benchmark-to-Rancher-Compliance?language=en_US)**
 
-## Running
-1. Install the custom resource definitions:
-- `kubectl apply -f crds/`
-2. Install the operator
-`./bin/cis-operator`
+## Support Status
 
+| Branch | Rancher Version | Status | Recommended Action |
+| :--- | :--- | :--- | :--- |
+| **release/v1.4** | v2.11.x | **Security Only** | Move to [Compliance Operator](https://github.com/rancher/compliance-operator) |
+| **release/v1.3** | v2.10.x | **Security Only** | Plan migration for Rancher 2.12+ |
+| **release/v1.2** | v2.9.x | **EOL** | Upgrade to supported version |
+
+### Maintenance Policy
+* **Issues & Feedback:** Direct all new feature requests or general bugs to the [Compliance Operator Issues](https://github.com/rancher/compliance-operator/issues).
+* **Security Patches:** We will continue to review PRs for documented security vulnerabilities (CVEs) on supported 2.10/2.11 lines. All other PRs will be redirected.
 
 ## Branches and Releases
 ### General information
@@ -35,13 +44,7 @@ that the Rancher release line it aims to support.
 Active development takes place against `main`. Release branches are only used for
 bug fixes and security-related dependency bumps.
 
-Refer to the [Support Compatibility Matrix](https://www.suse.com/suse-rancher/support-matrix/)
-for official compatibility information.
-
-### How future release branches should be generated
-Follow these guidelines when releasing new branches:
-1. Name convention to be used: `release/v1.x.x`.
-2. Update the [Branch and Releases](https://github.com/rancher/cis-operator#branches-and-releases) table with the new branches and remove the no longer needed branches.
+Refer to the [Support Compatibility Matrix](https://www.suse.com/suse-rancher/support-matrix) for official compatibility information.
 
 ## License
 Copyright (c) 2019 [Rancher Labs, Inc.](http://rancher.com)
@@ -57,5 +60,3 @@ distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-
-[rancher/security-scan]: https://github.com/rancher/security-scan