{"success":true,"message":"用户信息管理API服务正在运行","version":"1.0.0","endpoints":{"用户管理":{"POST /api/users":"上传用户信息","GET /api/users/:user_id":"查询用户信息","GET /api/users":"服务状态检查"},"关注管理":{"POST /api/follows":"添加关注播客","DELETE /api/follows":"取消关注播客","GET /api/follows/:user_id":"查询用户关注的播客列表","GET /api/follows":"服务状态检查"},"图片代理":{"GET /api/images/proxy?url=图片URL":"代理获取图片（支持海外图片加速）","POST /api/images/warmup":"批量预热图片缓存","GET /api/images/cache-info?url=图片URL":"查询图片缓存信息","GET /api/images/status":"图片代理服务状态"}}}