# Feature Doc Entity
### Scope
- **Purpose**: Document behavioral requirements of the `dream` facade crate.
- **Responsibility**: Index of feature doc instances covering the aggregation facade requirements.
- **In Scope**: Feature-gate behavior, re-export module structure, dependency isolation rules.
- **Out of Scope**: Zero-own-logic structural constraint (→ `invariant/`), workspace layering (→ workspace `docs/pattern/`).
### Overview Table
| 001 | [Facade Aggregation](001_aggregation.md) | Feature-gate re-export requirements FR-1 through FR-9 | ✅ |