EACGR Prototype: Executable Reference Implementation for Evidence-Governed Model Admissibility and Claim Governance

Executable reference implementation of the Evidence-based Admissibility
and Claim-Governance Rule (EACGR), synchronized with version 16 of the
companion manuscript submitted to Software and Systems Modeling (SoSyM).

The artifact includes the Critical Guard Map, the four-state Gamma-status
evaluator, six case audits, reproducible outputs for Tables 8–13, a
non-trivial structure-only baseline, uniform and one-requirement-at-a-time
sensitivity analyses, controlled counterfactual mutations, a full-text TAP
source audit, and regression tests for five formal safety properties.

This artifact supports internal conformance and reproducibility checking.
It does not constitute external or independent empirical validation of EACGR.