{"ok":true,"service":"英语朗读诊断 · 云函数","endpoints":{"POST /assess":"学生录音评测（腾讯云智聆）","POST /api/submit":"提交成绩到数据库","GET /api/health":"自检：看看数据库、密钥、限流是否就绪","POST /api/teacher":"教师看板数据（需管理密码）"},"hint":"请先访问 /api/health 确认配置"}