Test 3: Verifying empty cases (no false positives)...
Found 5 ground truth file(s)

✓ 2.json: Correctly empty (no false positives)
✓ 3.json: Correctly empty (no false positives)
⚠️  5.json: Output file not found, skipping

============================================================
Results: 2/2 empty cases correct
============================================================
SUCCESS: No false positives - empty cases are correctly empty!