Systematic debugging and problem-solving methodology. Activate when encountering unexpected errors, service failures, regression bugs, deployment issues, or when a fix attempt has failed twice. Also activate when proposing ANY fix to verify it addresses root cause (not a workaround). Prevents patch-chaining, wrong-environment restarts, workaround addiction, and "drunk man" random fixes.

系统化的调试与问题解决方法论。当遇到意外错误、服务故障、回归缺陷、部署问题，或修复尝试已失败两次时启动。在提出任何修复方案时也需启动，以验证其是否解决根本原因（而非临时规避）。可防止补丁连锁、错误环境重启、依赖临时方案和“醉汉式”随机修复。