feat: 添加 VitePress 文档站和 Gitea CI 部署

- 新增 docs/ 目录，使用 VitePress 构建文档站
- 添加 .gitea/workflows/deploy.yaml，部署到 Cloudflare Pages
- 新增 setup.sh 一站式安装脚本（兼容 macOS bash 3.x）
- 修复 Gemini CLI 脚本认证头（改用 Authorization: Bearer）

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/.vitepress/config.ts

@@ -0,0 +1,62 @@
+import { defineConfig } from 'vitepress'
+
+export default defineConfig({
+  title: 'XCodeCLI',
+  description: '一键配置 Claude Code / Gemini CLI / Codex',
+  lang: 'zh-CN',
+
+  head: [
+    ['link', { rel: 'icon', href: '/favicon.ico' }]
+  ],
+
+  themeConfig: {
+    logo: '/logo.svg',
+
+    nav: [
+      { text: '首页', link: '/' },
+      { text: '快速开始', link: '/guide/' },
+      // { text: 'API 状态', link: '/status' }
+    ],
+
+    sidebar: [
+      {
+        text: '快速开始',
+        items: [
+          { text: '介绍', link: '/guide/' },
+          { text: 'Claude Code', link: '/guide/claude-code' },
+          { text: 'Gemini CLI', link: '/guide/gemini-cli' },
+          { text: 'Codex', link: '/guide/codex' }
+        ]
+      },
+      {
+        text: '参考',
+        items: [
+          // { text: 'API 端点', link: '/reference/endpoints' },
+          // { text: '常见问题', link: '/reference/faq' }
+        ]
+      }
+    ],
+
+    socialLinks: [
+      { icon: 'github', link: 'https://gitea.sususu.cf/sususu/xcodecli-shells' }
+    ],
+
+    footer: {
+      message: 'XCodeCLI API Router',
+      copyright: '© 2025'
+    },
+
+    search: {
+      provider: 'local'
+    },
+
+    outline: {
+      label: '目录'
+    },
+
+    docFooter: {
+      prev: '上一页',
+      next: '下一页'
+    }
+  }
+})