Add documentation for latest release branch

Co-authored-by: wzhipan <[email protected]>

Author: Copilot

LATEST_RELEASE_BRANCH.md

@@ -0,0 +1,49 @@
+# Latest Release Branch
+
+The latest release branch is: **`working/release/23.1.0`**
+
+## Release Branch Information
+
+- **Branch Name**: `working/release/23.1.0`
+- **Corresponding Tag**: `v23.1.0`
+- **Branch Pattern**: `working/release/<VERSION>`
+
+## How to Access
+
+To checkout the latest release branch:
+```bash
+git fetch origin working/release/23.1.0
+git checkout working/release/23.1.0
+```
+
+## Release History (Recent)
+
+The repository maintains release branches following the pattern `working/release/<VERSION>`:
+
+- `working/release/23.1.0` (latest)
+- `working/release/23.0.0`
+- `working/release/22.1.0`
+- `working/release/22.0.1`
+- `working/release/22.0.0`
+- `working/release/21.4.0`
+- `working/release/21.3.0`
+- `working/release/21.2.0`
+- `working/release/21.1.0`
+- `working/release/21.0.0`
+
+## Verification
+
+To verify the latest release branch yourself:
+```bash
+# List all release branches sorted by version
+git ls-remote --heads origin | grep "working/release/" | awk -F'/' '{print $NF}' | sort -V | tail -1
+```
+
+This will output: `23.1.0`
+
+## Tags
+
+The release is also tagged as `v23.1.0`. To see all tags:
+```bash
+git tag --sort=-version:refname | head -20
+```