[Feature] Architecture Review & Interface Governance

[djm81]

Summary

• Track the architecture review pillar that turns architecture modeling into active review and governance.
• Focus this feature on the specfact-cli scoring, boundary, and ADR traceability contracts that extend the existing architecture layer.

Scope

• well-architected and clean-architecture review criteria
• layer-boundary and interface-governance checks
• architecture review evidence integration

Child changes

• architecture-02-well-architected-review (nold-ai/specfact-cli)