# Eval and Versioning Playbook

**Languages:** [简体中文](./eval-versioning-playbook.zh-CN.md) | [English](./eval-versioning-playbook.en.md)

This file is the language selector for behavior evals, VOI and UL regression, traces, version promotion, and rollback.

这个文件是行为 eval、VOI 与 UL（不确定性阶梯）回归、trace、版本提升与回滚 playbook 的语言入口。