ci: 添加文档部署

- Build job: 构建项目
- Publish job: 发布到 npm (tag 触发)
- Deploy-docs job: 部署文档到 GitHub Pages

Author: Agions

.github/workflows/npm-publish.yml

@@ -1,4 +1,4 @@
-name: Build and Publish
+name: Build, Publish and Deploy
 
 on:
   push:
@@ -64,3 +64,25 @@ jobs:
           release_name: TaskFlow AI ${{ github.ref }}
           draft: false
           prerelease: false
+
+  deploy-docs:
+    needs: build
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/main'
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: main
+          
+      - name: Download artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+          
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./docs/.vitepress/dist
+          publish_branch: gh-pages