{"name":"R2 MP3 Player API - 纯预签名URL版本","version":"3.0","mode":"direct-r2-cdn-only","performance":"🚀 100%直接访问R2 CDN，无代理","endpoints":{"POST /api/login":"用户登录（Cookie模式）","POST /api/login-token":"用户登录（Token模式，推荐）","POST /api/logout":"用户登出","GET /api/verify":"验证登录状态","POST /api/register":"用户注册","GET /api/users":"获取用户列表（管理员）","GET /api/online-stats":"获取在线人数统计","POST /api/hash-password":"密码哈希生成工具（调试用）","GET /api/mp3-list":"获取音乐列表（含预签名URL）","GET /api/search-direct":"直接搜索接口（返回原始搜索结果）","POST /api/presigned-url":"生成预签名URL","POST /api/transcription":"获取音频转录文本","POST /api/transcription-url":"获取转录文件预签名URL","POST /api/summary-url":"获取AI总结文件预签名URL","POST /api/download-url":"生成下载预签名URL（强制下载）","GET /api/guestbook":"获取留言板列表","POST /api/guestbook":"添加留言到留言板","GET /api/debug-config":"调试配置信息（需要登录）","GET /api/debug-auth":"调试认证状态（无需登录）","GET /api/debug-kv-optimization":"调试KV优化状态（需要登录）","POST /api/test-cookie":"测试Cookie设置","GET /api/check-cookie":"检查Cookie状态","GET /api/health":"健康检查"},"advantages":["✅ 100%预签名URL直接访问R2 CDN","✅ 完全利用CDN性能优势","✅ 最小化Workers负载","✅ 支持完整的Range请求","✅ 无代理，纯CDN访问"],"optimizations":["🔥 智能KV更新策略 - 减少60-80%的KV写入操作","⚡ 5分钟内重复验证不触发KV更新","📊 KV调用优化：每用户每小时从120+次减少到12次","🎯 可配置的更新间隔和批量处理"],"fixes":["🔧 修复AWS Signature V4算法","🔧 修复URI编码问题","🔧 修复查询参数排序","🔧 添加调试接口","🔥 修复KV调用过多问题"]}