docs: add Batch Install Plugins install section to plugin READMEs

docs/plugins/tools/batch-install-plugins.md

@@ -8,6 +8,23 @@
 
 One-click batch install plugins from GitHub repositories to your OpenWebUI instance.
 
+## Install with Batch Install Plugins
+
+After you install [Batch Install Plugins from GitHub](https://openwebui.com/posts/batch_install_plugins_install_popular_plugins_in_s_c9fd6e80) once, you can also use it to reinstall or update itself with:
+
+```text
+Install plugin from Fu-Jie/openwebui-extensions
+```
+
+When the selection dialog opens, search for this plugin, check it, and continue.
+
+> [!IMPORTANT]
+> If the official OpenWebUI Community version is already installed, remove it first. After that, Batch Install Plugins can keep this plugin updated in future runs.
+
+> [!TIP]
+> **💡 Looking to batch install or manage Workspace Skills?**
+> This plugin specializes in installing global function-based plugins (Pipe, Filter, Tool, Action). If you need to manage your AI assistant's dedicated Skills, use our companion tool [OpenWebUI Skills Manager](https://openwebui.com/posts/openwebui_skills_manager_tool_b4bce8e4), which provides full CRUD capabilities, batch discovery, and interactive selection dialogs.
+
 ## Key Features
 
 - **One-Click Install**: Install all plugins with a single command