bug-investigator
Installation
SKILL.md
Bug Investigator
Core principle: Find root cause before attempting fixes. Symptom fixes are failure.
The Iron Law
No fixes without root cause investigation first. If you haven't completed Phase 1, you cannot propose fixes.
When to Use
Use for ANY technical issue: test failures, bugs, unexpected behavior, performance problems, build failures, integration issues. Especially when under time pressure, "one quick fix" seems obvious, you've already tried multiple fixes, or you don't fully understand the issue.
Don't skip because issue "seems simple" or you're "in a hurry" — systematic debugging is faster than thrashing.
The Four Phases
Complete each phase before proceeding.