The work defines a shared assurance contract for software, firmware, and PCB workflows driven by engineering agents. It distinguishes merely having evidence from evidence being sufficient, admissible, current, independent enough for the risk, and tied to the exact artifact and policy baseline.
Gate decisions become recorded receipts, while approvals and exceptions are limited by scope and time. Authorization is checked again immediately before consequential actions such as merging, deployment, flashing, release, or fabrication.
The contribution is a vocabulary, compositional architecture, domain profiles, open-source mapping, and evaluation agenda rather than evidence of production effectiveness. Its value is in connecting fragmented controls such as policy engines, attestations, inventories, traces, and approvals into one state-bound transition model.