docs(plugins): add mutual introductions in README for skills-manager and batch-install

plugins/tools/openwebui-skills-manager/README.md

@@ -28,6 +28,10 @@ When the selection dialog opens, search for this plugin, check it, and continue.
 - Added GitHub skills-directory auto-discovery for `install_skill` (e.g., `.../tree/main/skills`) to install all child skills in one request.
 - Fixed language detection with robust frontend-first fallback (`__event_call__` + timeout), request header fallback, and profile fallback.
 
+> [!TIP]
+> **💡 Looking to batch install global plugins (Actions, Filters, Pipes, Tools)?**
+> This plugin specializes in managing Workspace Skills for your assistants. If you need to install and manage global function-based plugins, use our companion tool [Batch Install Plugins from GitHub](https://github.com/Fu-Jie/openwebui-extensions/tree/main/plugins/tools/batch-install-plugins) for an optimized installation workflow.
+
 ## Key Features
 
 - **🌐 Model-agnostic**: Can be enabled for any model that supports OpenWebUI Tools.

plugins/tools/openwebui-skills-manager/README_CN.md

@@ -28,6 +28,10 @@
 - `install_skill` 新增 GitHub 技能目录自动发现（例如 `.../tree/main/skills`），可一键安装目录下所有子技能。
 - 修复语言获取逻辑：前端优先（`__event_call__` + 超时保护），并回退到请求头与用户资料。
 
+> [!TIP]
+> **💡 想要批量安装/管理全局插件 (Actions, Filters, Pipes, Tools)？**
+> 本插件专注管理工作区的 AI 技能 (Skills)。如果你需要安装和管理全局函数型插件，请使用同系列的 [Batch Install Plugins from GitHub](https://github.com/Fu-Jie/openwebui-extensions/tree/main/plugins/tools/batch-install-plugins) 工具，不仅安装体验极致，而且完美接轨系统扩展体系。
+
 ## 核心特性
 
 - **🌐 全模型可用**：只要模型启用了 OpenWebUI Tools，即可调用。