Placemats
Understand the architecture through its governing distinctions.
These reference maps explain the relationships behind the engineering canon. They are editorial navigation aids derived from the source bundle, not additional normative specifications. Use the underlying principles, declaration trees, and check scripts as the authority.
Five Artifact Kinds
Principles, checks, lenses, skills, surfaces
Two Axes of Verification
Construction and conformance
The Three-Layer Boundary
Surfaces → API → library
State & Delivery
Release, control, and accumulated state