Module registry 

Contract tier and kernel equivalence class lookups.

Derived from docs/specifications/sub/registry.md. Contracts not explicitly listed default to Tier 7 (performance/KAIZEN).

Functions

class_of

Kernel equivalence class (A-E). Returns None for contracts that don’t belong to any class (training, classical ML, etc.).

classes_of

All classes a contract belongs to (a contract can be in multiple classes).

tier_of

Contract tier (1-7). Lower tier = more foundational.