feat: docs update

docs/en/skills/skill-creator.mdx

@@ -0,0 +1,33 @@
+---
+title: Skill Creator
+description: Create custom skills through conversation
+---
+
+# skill-creator
+
+Quickly create, install, or update skills through natural language conversation.
+
+## Dependencies
+
+No extra dependencies, always available.
+
+## Usage
+
+- Codify workflows as skills: "Create a skill from this deployment process"
+- Integrate third-party APIs: "Create a skill based on this API documentation"
+- Install remote skills: "Install xxx skill for me"
+
+## Creation Flow
+
+1. Tell the Agent what skill you want to create
+2. Agent automatically generates `SKILL.md` description and execution scripts
+3. Skill is saved to the workspace `~/cow/skills/` directory
+4. Agent will automatically recognize and use the skill in future conversations
+
+<Frame>
+  <img src="https://cdn.link-ai.tech/doc/20260202202247.png" width="800" />
+</Frame>
+
+<Tip>
+  See the [Skill Creator documentation](https://github.com/zhayujie/chatgpt-on-wechat/blob/master/skills/skill-creator/SKILL.md) for details.
+</Tip>