docs: add skill install instructions to upgrade FAQ

Users upgrading from older versions won't have the skill file,
so provide a curl command to download it from the latest template.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

docs/cheatsheet.en-US.md

@@ -493,7 +493,12 @@ Edit `colorPrimary` in `config/defaultSettings.ts`. Use SettingDrawer for live p
 Create a file in `src/models/` exporting a custom Hook, then use `useModel('filename')` in components.
 
 **Q: How to upgrade the project?**
-Run `/pro-upgrade` in Claude Code at the project root — AI will auto-diff the latest Ant Design Pro template and upgrade your project (deps, config, code patterns, etc.). For other AI assistants, paste the content from `AGENTS.md`.
+First, install the pro-upgrade skill into your project:
+```bash
+mkdir -p .claude/skills/pro-upgrade
+curl -sL https://raw.githubusercontent.com/ant-design/ant-design-pro/master/.claude/skills/pro-upgrade/SKILL.md -o .claude/skills/pro-upgrade/SKILL.md
+```
+Then run `/pro-upgrade` in Claude Code at the project root — AI will auto-diff the latest template and upgrade your project (deps, config, code patterns, etc.). For other AI assistants, paste the content of `.claude/skills/pro-upgrade/SKILL.md` to them.
 
 **Q: How to deploy?**
 `npm run build` generates `dist/`. Deploy to any static file server. Set `publicPath` for non-root deployments. `npm run deploy` builds and publishes to GitHub Pages automatically (pushes to gh-pages branch).

docs/cheatsheet.zh-CN.md

@@ -493,7 +493,12 @@ export default {
 在 `src/models/` 下创建文件，导出自定义 Hook，组件中通过 `useModel('文件名')` 使用。
 
 **Q: 如何升级项目？**
-在项目根目录用 Claude Code 运行 `/pro-upgrade`，AI 会自动对比最新 Ant Design Pro 模板并完成升级（依赖、配置、代码模式等）。如使用其他 AI 助手，可将 `AGENTS.md` 中的内容提供给它。
+先将 pro-upgrade skill 安装到项目中：
+```bash
+mkdir -p .claude/skills/pro-upgrade
+curl -sL https://raw.githubusercontent.com/ant-design/ant-design-pro/master/.claude/skills/pro-upgrade/SKILL.md -o .claude/skills/pro-upgrade/SKILL.md
+```
+然后在项目根目录用 Claude Code 运行 `/pro-upgrade`，AI 会自动对比最新模板并完成升级（依赖、配置、代码模式等）。如使用其他 AI 助手，可将 `.claude/skills/pro-upgrade/SKILL.md` 中的内容提供给它。
 
 **Q: 如何部署？**
 `npm run build` 生成 `dist/` 目录，部署到任意静态服务器。配置 `publicPath` 处理非根目录部署。`npm run deploy` 会自动构建并发布到 GitHub Pages（推送到 gh-pages 分支）。