Test Failure Investigator Runbook-style skill for systematic test failure investigation. Given a failing test, determines root cause and recommends action. Activation Investigation Flow Step 1: Classify the Failure Run the test 3 times and classify: | Result Pattern | Classification | Action | |---------------|---------------|--------| | Fails consistently | Regression or Environment | Continue to Step 2 | | Fails intermittently | Flaky | Skip to Step 4 | | Passes now | Transient | Check CI logs, environment diff | Step 2: Narrow the Scope Step 3: Root Cause Analysis | Symptom | Likely Cause…