---
name: investigate
description: Root cause analysis skill — diagnose bugs systematically before fixing. Iron Law: no fix without a confirmed hypothesis. Uses scope lock, 3-strike escalation, and structured debug reports.
when_to_use: "bug, error, broken, failing, crash, 报错, 修复, why is X failing, not working"
argument-hint: '[error message or symptom description]'
user_invocable: true
---
