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>

GeminiCLI/setup-gemini.sh

@@ -84,19 +84,19 @@ test_api_connection() {
 
         local test_endpoint="$base_url/v1/models"
 
-        # Test with x-goog-api-key header (Gemini API style)
+        # Test with Authorization Bearer header (XCodeCLI API style)
         local response
         response=$(curl -s -w "%{http_code}" -o /tmp/gemini_test_response \
             -X GET "$test_endpoint" \
             -H "Content-Type: application/json" \
-            -H "x-goog-api-key: $api_key" \
+            -H "Authorization: Bearer $api_key" \
             2>/dev/null || echo "000")
 
         if [ "$response" = "200" ]; then
-            # Check if response contains models
-            if grep -q '"models"' /tmp/gemini_test_response 2>/dev/null; then
+            # Check if response contains models (supports both {data:[]} and {models:[]} formats)
+            if grep -qE '"(data|models)"' /tmp/gemini_test_response 2>/dev/null; then
                 local model_count
-                model_count=$(grep -oE '"name"[[:space:]]*:' /tmp/gemini_test_response | wc -l | tr -d ' ')
+                model_count=$(grep -oE '"id"[[:space:]]*:' /tmp/gemini_test_response | wc -l | tr -d ' ')
                 print_success "API connection successful! Found $model_count models at $base_url" >&2
                 rm -f /tmp/gemini_test_response
                 echo "$base_url"