feat(pipes): enforce ANTI-INLINE HTML generation rule

docs/plugins/tools/openwebui-skills-manager-tool.md

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+# OpenWebUI Skills Manager Tool
+
+**Author:** [Fu-Jie](https://github.com/Fu-Jie/openwebui-extensions) | **Version:** 0.2.0 | **Project:** [OpenWebUI Extensions](https://github.com/Fu-Jie/openwebui-extensions)
+
+A standalone OpenWebUI Tool plugin for managing native Workspace Skills across models.
+
+## Key Features
+
+- Native skill management
+- User-scoped list/show/install/create/update/delete operations
+- Status-bar feedback for each operation
+
+## Methods
+
+- `list_skills`
+- `show_skill`
+- `install_skill`
+- `create_skill`
+- `update_skill`
+- `delete_skill`
+
+## Installation
+
+1. Open OpenWebUI → Workspace → Tools
+2. Create Tool and paste:
+   - `plugins/tools/openwebui-skills-manager/openwebui_skills_manager.py`
+3. Save and enable for your chat/model