-- B08显式完整审计的追加证明；既有成品字节及原始验证记录保持不可变。
CREATE TABLE public.muse_delivery_artifact_validation (
    artifact_id uuid NOT NULL REFERENCES public.muse_delivery_artifact,
    validation_version text NOT NULL CHECK(validation_version = 'delivery-validation-v2'),
    author_id text NOT NULL,
    verification jsonb NOT NULL,
    audited_at timestamptz NOT NULL DEFAULT clock_timestamp(),
    PRIMARY KEY(artifact_id,validation_version),
    CHECK((verification->>'validation_version' = validation_version) IS TRUE),
    CHECK((verification->'verified' = 'true'::jsonb) IS TRUE),
    CHECK((jsonb_typeof(verification->'binding') = 'object') IS TRUE)
);
CREATE TRIGGER muse_delivery_artifact_validation_immutable BEFORE UPDATE OR DELETE
    ON public.muse_delivery_artifact_validation FOR EACH ROW
    EXECUTE FUNCTION public.muse_guard_literary_history();
REVOKE ALL ON public.muse_delivery_artifact_validation FROM PUBLIC,muse_app,muse_eval;
GRANT SELECT,INSERT ON public.muse_delivery_artifact_validation TO muse_app;