docs: add App Builder unpublish guidance

en/basic/ai/app-builder.mdx

@@ -105,6 +105,7 @@ After App Builder adds the AI feature, the app preview uses the new version. The
 When your app is ready, click the **Publish** button (arrow icon) in the top right corner.
 - **Public URL**: Teable generates a secure, publicly accessible URL for your app.
 - **Custom Domain**: Map your own domain to the app.
+- **Unpublish**: For a published app, use **Unpublish** in the publish menu to take the public link offline.
 - **App configuration changes**: If the publish menu shows **App configuration changed — redeploy to apply**, click **Redeploy** to apply pending Secret value, AI access, or login changes to the published app.
 
 <img
@@ -113,6 +114,18 @@ When your app is ready, click the **Publish** button (arrow icon) in the top rig
   className="docs-screenshot"
 />
 
+### Unpublish an App
+
+To take a published app offline, open the **Publish** menu and click **Unpublish**. After you confirm, the public app URL can no longer be accessed.
+
+<img
+  src="/images/docs/ai/2026-06-05-app-builder-unpublish-en.png"
+  alt="Unpublish app button in the publish menu"
+  className="docs-screenshot"
+/>
+
+Unpublishing does not delete the app or its edit history. You can keep editing the app and publish it again later.
+
 ### Custom Domains
 
 <Note>Custom domains require the Business plan or above.</Note>

zh/basic/ai/app-builder.mdx

@@ -115,6 +115,7 @@ Teable 应用构建器 (App Builder) 允许您在不编写代码的情况下，
 
 - **公开链接**：Teable 会为您的应用生成一个安全的、可公开访问的 URL。
 - **自定义域名**：支持绑定您自己的域名。
+- **取消发布**：已发布应用可在发布菜单中点击 **取消发布**，让公开链接暂时下线。
 - **应用配置变更**：如果发布菜单显示 **应用配置已修改，重新发布后生效**，点击 **重新发布**，将待生效的密钥值、AI 访问或登录配置变更应用到已发布应用。
 
 <img
@@ -123,6 +124,18 @@ Teable 应用构建器 (App Builder) 允许您在不编写代码的情况下，
   className="docs-screenshot"
 />
 
+### 取消发布应用
+
+要让已发布应用暂时下线，打开 **发布** 菜单，点击 **取消发布**。确认后，公开应用链接将无法访问。
+
+<img
+  src="/images/docs/ai/2026-06-05-app-builder-unpublish-zh.png"
+  alt="发布菜单中的取消发布按钮"
+  className="docs-screenshot"
+/>
+
+取消发布不会删除应用或编辑历史。您可以继续编辑应用，并在之后重新发布。
+
 ### 自定义域名
 
 <Note>自定义域名需要商业版及以上方案。</Note>