# Doc Entities
## Master Doc Entities Table
| `api/` | Document public API — free functions, type wrappers, and conversion traits | [api/readme.md](api/readme.md) | 3 |
| `feature/` | Navigate feature artifacts across source, tests, and docs | [feature/readme.md](feature/readme.md) | 2 |
| `invariant/` | Document correctness invariants — always-hold structural properties | [invariant/readme.md](invariant/readme.md) | 2 |
## Master Doc Instances Table
| api | 001 | Path Functions | [api/001_path_functions_api.md](api/001_path_functions_api.md) |
| api | 002 | Type Wrappers | [api/002_type_wrappers_api.md](api/002_type_wrappers_api.md) |
| api | 003 | Conversion Traits | [api/003_conversion_traits_api.md](api/003_conversion_traits_api.md) |
| feature | 001 | Path Normalization | [feature/001_path_normalization.md](feature/001_path_normalization.md) |
| feature | 002 | Path Type System | [feature/002_path_type_system.md](feature/002_path_type_system.md) |
| invariant | 001 | Zero Dependencies | [invariant/001_zero_dependencies.md](invariant/001_zero_dependencies.md) |
| invariant | 002 | Fixed Output Format | [invariant/002_fixed_output_format.md](invariant/002_fixed_output_format.md) |