[Feature] Policy Engine & Enforcement Modes

[djm81]

Feature: Policy Engine & Enforcement Modes

Parent Epic: #187 specfact policy

Groups the policy engine unified framework and the policy packs and enforcement modes work.

Child User Stories

• [Change] Unified Policy Engine (DoR/DoD/Flow/PI) — Δ1 #176 — policy-engine-01 (unified framework) — closed
• Policy Packs & Enforcement Modes (Advisory/Mixed/Hard) specfact-cli-modules#158 — policy-02 (packs and modes) — open

Note: nold-ai/specfact-cli-modules#158 is primarily grouped under F20 Governance, Policy Packs & Evidence (#370) under Epic #256 (where it fits architecturally). It appears here for Epic #187 discoverability.