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>

.gitea/workflows/deploy.yaml

@@ -0,0 +1,41 @@
+name: Deploy to Cloudflare Pages
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - "docs/**"
+      - ".gitea/workflows/deploy.yaml"
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+
+      - name: Install dependencies
+        run: |
+          cd docs
+          bun install
+
+      - name: Build VitePress
+        run: |
+          cd docs
+          bun run build
+
+      - name: Install Wrangler
+        run: npm install -g wrangler
+
+      - name: Deploy to Cloudflare Pages
+        env:
+          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+        run: |
+          wrangler pages deploy docs/.vitepress/dist \
+            --project-name=xcodecli \
+            --branch=main \
+            --commit-dirty=true