Doc/v1.2.1 0210 (alibaba#467)

* add release note 120

* Revert "add release note 120"

This reverts commit 65a11fd.

* add v1.2.1 doc

Author: zhongwen666

docs/i18n/zh-Hans/docusaurus-plugin-content-docs/version-1.2.x/Release Notes/index.md

@@ -2,4 +2,5 @@
 sidebar_position: 1
 ---
 # 版本说明
-* [release v1.2.0](v1.2.0.md)
+* [release v1.2.0](v1.2.0.md)
+* [release v1.2.1](v1.2.1.md)

docs/i18n/zh-Hans/docusaurus-plugin-content-docs/version-1.2.x/Release Notes/v1.2.1.md

@@ -0,0 +1,17 @@
+# v1.2.1
+
+## 发布日期
+2026 年 2 月 5 日
+
+## 概述
+本次发布主要涉及Admin的bug修复。
+
+---
+
+## Admin
+
+### Bug 修复
+
+#### 任务调度器
+
+修复了任务状态文件在worker中缺失检测不到的问题。

docs/versioned_docs/version-1.2.x/Release Notes/index.md

@@ -3,3 +3,4 @@ sidebar_position: 1
 ---
 # Release Notes
 * [release v1.2.0](v1.2.0.md)
+* [release v1.2.1](v1.2.1.md)

docs/versioned_docs/version-1.2.x/Release Notes/v1.2.1.md

@@ -0,0 +1,17 @@
+# v1.2.1
+
+## Release Date
+February 5, 2026
+
+## Overview
+This release primarily focuses on Admin bug fix.
+
+---
+
+## Admin
+
+### Bug Fixes
+
+#### Task Scheduler
+
+Fix an issue where missing task status files on workers were not detected.