maturity-engine computes a level deterministically from declared criteria and
submitted evidence, and keeps the progression history. It owns model
registration, evidence validity, level computation, the gap register, and
capability readiness.
It closes a defect in gate-house's own catalog claim: gate-house is catalogued
as owning conformance review with no engine to act through, which is the
standard section 9.1 problem kings-guard raised for containment. Staff acts
only through Engine APIs.
Carries one guardrail from day one: a maturity level must never gate a decision
directly, or the estate acquires a second decision point by the graded back
door.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 2564823@bnt-lap001
Assistant-Session: 2a7ed827-4928-4b9f-8613-9135c9cadfe9
