# Darwin Optimization Log — workflow-engine

## Summary

- **Initial score**: 80.3 (🟡 Good)
- **Final score**: 98.4 (🟢 Excellent)
- **Total improvement**: +18.1 points
- **Rounds**: 5 (auto-stopped at Δ=1.7 < 2.0 threshold)
- **Date**: 2026-06-09

## Round-by-Round Changes

| Round | Score | Δ | Changes |
|-------|-------|---|---------|
| Baseline | 80.3 | — | Initial evaluation |
| 1 | 86.4 | +6.1 | Added 9 reference links, CHECKPOINT table, antipattern table, removed 4 "建议" softeners |
| 2 | 91.0 | +4.6 | Upgraded dim8 from dry_run to full_test (10 CLI commands validated) |
| 3 | 94.3 | +3.3 | Added exception/troubleshooting table (4-column: trigger/fix/fallback), YAML field annotations, workflow creation example |
| 4 | 96.7 | +2.4 | Added module responsibility matrix, data flow diagram |
| 5 | 98.4 | +1.7 | Added 3 trigger words, 2 references, 2 antipatterns. Auto-stop (Δ < 2.0) |

## Dimension Scores

| Dim | Weight | Baseline | Final | Notes |
|-----|--------|----------|-------|-------|
| 1 Frontmatter | 7 | 9 | 10 | Added 3 trigger words |
| 2 Workflow clarity | 12 | 9 | 10 | Module responsibility matrix |
| 3 Failure modes | 12 | 9 | 10 | 4-column troubleshooting table |
| 4 Checkpoints | 6 | 7 | 9 | CHECKPOINT table with 🔴 |
| 5 Specificity | 17 | 8 | 10 | YAML annotations + creation example |
| 6 Resources | 4 | 3 | 10 | 13 reference links |
| 7 Architecture | 12 | 9 | 10 | Module matrix + data flow |
| 8 Testing | 23 | 8 | 10 | Full CLI test (10 commands) |
| 9 Antipatterns | 6 | 7 | 10 | 10-item antipattern table |

## Key Leverage Points

1. **dim6 (Resources)**: Biggest single gain (+5 points). Adding reference links is cheap but high-impact.
2. **dim8 (Testing)**: Full test validation added +4.6 points. dry_run → full_test is a major upgrade.
3. **dim9 (Antipatterns)**: "Don't do" table is required by SkillLens rubric. Easy to add, +2 points.
4. **dim5 (Specificity)**: YAML annotations + code examples remove ambiguity. "建议" → concrete instructions.