mod_interface 0.64.0

Protocol of modularity unifying interface of a module and introducing layers.
Documentation
# Doc Entities

## Master Doc Entities Table

| Type | Purpose | Master File | Instances |
|------|---------|-------------|----------:|
| `api/` | DSL operations and directive contract for the mod_interface! macro | [api/readme.md]api/readme.md | 1 |
| `feature/` | Navigational hubs for user-facing macro capabilities and their artifacts | [feature/readme.md]feature/readme.md | 1 |
| `invariant/` | Properties that must always hold in the namespace layer propagation system | [invariant/readme.md]invariant/readme.md | 1 |
| `pattern/` | Architectural patterns governing the five-layer cascade and crate structure | [pattern/readme.md]pattern/readme.md | 2 |

## Master Doc Instances Table

| Entity | ID | Name | File |
|--------|-----|------|------|
| api | 001 | mod_interface Macro DSL | [api/001_mod_interface_macro.md]api/001_mod_interface_macro.md |
| feature | 001 | Layered Module Interface | [feature/001_layered_module_interface.md]feature/001_layered_module_interface.md |
| invariant | 001 | Propagation Rules | [invariant/001_propagation_rules.md]invariant/001_propagation_rules.md |
| pattern | 001 | Exposure Level Cascade | [pattern/001_exposure_level_cascade.md]pattern/001_exposure_level_cascade.md |
| pattern | 002 | Absorption Pattern | [pattern/002_absorption_pattern.md]pattern/002_absorption_pattern.md |