Reporting API：错误与策略上报治理

概述Reporting API 允许浏览器将策略违规与网络错误发送至指定端点。常与 NEL（Network Error Logging）协作进行网络质量观测。部分实现使用 `Report-To`，新方案为 `Reporting-Endpoints`。用法/示例Report-To: { "group": "default", "max_age": 86400, "endpoints": [{ "url": "https://report.example/upload" }] } NEL: { "report_to": "default", "max_age": 86400, "success_fraction": 0.0, "failure_fraction": 1.0 } Reporting-Endpoints: default="https://report.example/upload" 工程建议对端点进行速率限制与鉴权，避免放大效应；区别成功/失败采样率。结合后端聚合与告警策略，制定可执行的修复与回归流程。注意隐私与跨域策略，过滤敏感字段并遵守数据政策。参考与验证MDN：NEL — https://developer.mozilla.org/docs/Web/HTTP/Headers/NELW3C：Reporting — https://www.w3.org/TR/reporting-1/IETF：Network Error Logging — https://www.rfc-editor.org/rfc/rfc9264