## What does this PR change?

<!-- One sentence summary -->

## Type of change

- [ ] Bug fix — incorrect finding, false positive, broken output
- [ ] New finding — added symptom/source to an existing decay risk
- [ ] New eval scenario — added test case to `evals/evals.json`
- [ ] Guide improvement — better heuristics in a mode guide file
- [ ] New decay risk — added a new R or T risk entry
- [ ] Other: ___

## Files changed

<!-- List the skill files touched. Helps reviewers focus. -->

- [ ] `skills/_shared/common.md`
- [ ] `skills/_shared/decay-risks.md`
- [ ] `skills/_shared/test-decay-risks.md`
- [ ] `skills/brooks-review/`
- [ ] `skills/brooks-audit/`
- [ ] `skills/brooks-debt/`
- [ ] `skills/brooks-test/`
- [ ] `evals/evals.json`
- [ ] Other: ___

## Testing

<!-- How did you verify the change? Running the skill manually counts. -->

- [ ] Ran the affected mode manually and confirmed the finding appears / disappears
- [ ] Added an eval scenario in `evals/evals.json`
- [ ] Checked that existing output structure is unchanged (Health Score, Iron Law format)

## Related issue

Closes #
