# Docs
## Scope
Design and API documentation for `test_tools`.
### Responsibility Table
| `readme.md` | Document docs/ organization and entity index |
| `feature/` | Navigational hubs for user-facing features |
| `invariant/` | Correctness properties that must always hold |
| `pattern/` | Reusable design patterns applied in the implementation |
| `entities.md` | Cross-entity index of all doc instances |
| `doc_graph.yml` | Cross-reference graph for doc instance navigation |