fix(reviews): map failed_count to warning, always show not-applicable badge

- failed_count should be 'warning' not 'error' for scored eval
- Show '未涉及' badge always, not only when count > 0

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/routes/reviews.tsx

@@ -238,8 +238,8 @@ export async function loader({ request }: LoaderFunctionArgs) {
         statistics: {
           total: unifiedData.summary?.total_points || 0,
           success: unifiedData.summary?.passed_count || 0,
-          error: unifiedData.summary?.failed_count || 0,
-          warning: 0,
+          warning: unifiedData.summary?.failed_count || 0,
+          error: 0,
           notApplicable: unifiedData.summary?.not_applicable_count || 0,
           score: unifiedData.summary?.total_score || 0
         },