# Docs
### Scope
Design and API documentation for `component_model_types`. Organized as typed doc entity instances: api/ documents the trait interface, invariant/ captures behavioral constraints, and feature/ describes the capabilities this crate enables.
### Responsibility Table
| [api/](api/readme.md) | API documentation for the Assign trait system |
| [invariant/](invariant/readme.md) | Invariant documentation — behavioral constraints and correctness properties |
| [feature/](feature/readme.md) | Feature documentation — what this crate enables |
| [entities.md](entities.md) | Cross-entity index of all doc entity types and instances |
| [doc_graph.yml](doc_graph.yml) | Cross-reference graph of all doc instances and their relationships |