# Doc Entities

## Master Doc Entities Table

| Type | Purpose | Master File | Instances |
|------|---------|-------------|----------:|
| `api/` | Public interface — derive macros, applicability, and feature flags | [api/readme.md](api/readme.md) | 2 |
| `feature/` | Feature specifications — what the crate does and why | [feature/readme.md](feature/readme.md) | 1 |
| `integration/` | Integration documentation — dependencies and consumers | [integration/readme.md](integration/readme.md) | 1 |
| `invariant/` | Behavioral contracts that must always hold | [invariant/readme.md](invariant/readme.md) | 1 |

## Master Doc Instances Table

| Entity | ID | Name | File |
|--------|----|------|------|
| api | 001 | Workspace Derives | [api/001_workspace_derives.md](api/001_workspace_derives.md) |
| api | 002 | External Derives | [api/002_external_derives.md](api/002_external_derives.md) |
| feature | 001 | Aggregate Facade | [feature/001_aggregate_facade.md](feature/001_aggregate_facade.md) |
| integration | 001 | derive_tools_meta | [integration/001_derive_tools_meta.md](integration/001_derive_tools_meta.md) |
| invariant | 001 | Pure Facade | [invariant/001_pure_facade.md](invariant/001_pure_facade.md) |
