Tier-A Dependencies urf-prefab-system Repository: https://github.com/inaciovasquez2020/urf-prefab-system Version: v0.2.1 Status: Tier-A frozen Branch: main (immutable) Integration mode Documentation-level dependency Structural alignment only No code import or execution coupling Guarantees inherited Assumption indexing discipline Invariant declaration structure Certification hook layout Non-guarantees No semantic correctness No execution behavior No completeness claims