ci: 添加文档构建和部署工作流

添加 GitHub Actions 工作流用于自动构建和部署 VitePress 文档
同时更新文档配置添加 base 路径

.github/workflows/docs.yml

@@ -0,0 +1,55 @@
+name: Build and Deploy Docs
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+          cache-dependency-path: docs/package-lock.json
+
+      - name: Install dependencies
+        working-directory: docs
+        run: npm install
+
+      - name: Build VitePress site
+        working-directory: docs
+        run: npm run build
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: docs/.vitepress/dist
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4
+

docs/.vitepress/config.mjs

@@ -6,6 +6,7 @@ export default defineConfig({
 	title: 'CWD 评论系统文档',
 	description: '基于 Cloudflare Workers 的轻量级评论系统',
 	lang: 'zh-CN',
+	base: '/cwd/',
 	head: [
 		[
 			'link',