PhiGraph Core 4.1: A Shadow-First Evidence Ledger, Transactional Scoped Storage, and GRDI for Software-Agent Operations

Abstract

PhiGraph Core 4.1.0-rc.6 is a model-agnostic governance system for software-agent and AI operations. This v2 draft extends the Zenodo v1 paper with a scoped transactional ledger (declared write locks, fail-closed verify_scoped_chain on JSON/SQLite), GRDI 0.4.0 shadow decision chain (envelope through replay audit, no external execution), and updated evaluation (319 automated tests at main@a5a7187). It retains the typed protocol, policy-gated runtime, HAV v0.2 fail-closed verification, and the bounded CIC-IDS2017 experiment with explicit limitations. Paper source is licensed CC BY 4.0. PhiGraph software is distributed separately under the repository software license. Git pin for this draft: a5a7187.