# Acceptance: diagnosis-eval-baseline-diff

## Classification

standard-light

## Task Status

| Task | Status | Notes |
| --- | --- | --- |
| Issue and OpenSpec setup | Done | Created slug-based issue and initial OpenSpec artifacts. |
| Implementation | Done | Added diff model, comparator, writer, docs, sample outputs, and focused tests. |
| Verification | Done | Diff/evaluator tests, compile verification, and OpenSpec validation passed. |

## Current State

- Baseline diff is implemented for aggregate metrics, verdict distribution, case-level state, keyword coverage, evidence coverage, missing cases, and new cases.
- JSON and Markdown diff output are available.
- No production runtime behavior has been changed.

## Verification

### Script Verification

- Command: `mvn -q "-Dtest=DiagnosisEvalBaselineDiffTest" test`
- Result: passed
- Notes: Also verified with `DiagnosisTraceEvaluatorTest`.

### Static Verification

- Command: `mvn -q -DskipTests compile`
- Result: passed

### OpenSpec Verification

- Command: `openspec validate diagnosis-eval-baseline-diff --strict`
- Result: passed