feat(P1): kyverno-json engine core + PolicyEngine protocol (REQ-291..294, 308, 309)
core/policy_engine.py: PolicyEngine Protocol (PEP 544, runtime_checkable)
+ PolicyEngineRegistry (selects from config.json.policy.engine) + NullEngine
fallback (NULL_ENGINE_INACTIVE when policy key absent).
adapters/kyverno-json/: KyvernoJsonEngine — shells to , translates
native output → list[dict] PCR records (engine: "kyverno", ruleId KJ_ prefix,
severity via nova.cloudinit.dev/severity annotation, default info).
is_configured() guards on → KJ_ENGINE_NOT_CONFIGURED SKIPPED PCR
(distinct from NullEngine). Defensive parsing (malformed → error PCR).
config.json: new object {engine: kyverno-json, policy_root}.
scripts/install-kyverno-json.sh: go install kj@latest (D-115).
CI (.gitea + .github): install Go + kj for policy-engine tests (best-effort;
tests skip when kj absent).
tests: 24 pass, 2 skip (kj not installed). 132 existing tests unchanged.
NullEngine satisfies PolicyEngine Protocol (G-Q8a — proves swap boundary).
---ci---
project: acdl
phase: 1
milestone: v1.25
status: execute
phase_role: execution
requirements:
covered: [REQ-291, REQ-292, REQ-293, REQ-294, REQ-308, REQ-309]
partial: []
---/ci---
Jon Chery
ac18c98385