-- B08固定交付清单与导出字节；正文仍以B05版本为唯一权威。
CREATE TABLE public.muse_delivery (
    delivery_id uuid PRIMARY KEY,
    author_id text NOT NULL,
    work_id text NOT NULL,
    revision integer NOT NULL CHECK(revision > 0),
    manifest jsonb NOT NULL,
    manifest_hash text NOT NULL CHECK(manifest_hash ~ '^[0-9a-f]{64}$'),
    created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
    UNIQUE(work_id,revision),
    CHECK(jsonb_array_length(manifest->'chapters') > 0)
);
CREATE TABLE public.muse_delivery_artifact (
    artifact_id uuid PRIMARY KEY,
    delivery_id uuid NOT NULL REFERENCES public.muse_delivery,
    format text NOT NULL CHECK(format IN ('txt','md','docx','epub')),
    formatter_version text NOT NULL,
    data bytea NOT NULL,
    content_hash text NOT NULL CHECK(content_hash ~ '^[0-9a-f]{64}$'),
    verification jsonb NOT NULL,
    task_id uuid,
    created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
    UNIQUE(delivery_id,format,formatter_version),
    CHECK(octet_length(data) > 0)
);
CREATE TRIGGER muse_delivery_immutable BEFORE UPDATE OR DELETE
    ON public.muse_delivery FOR EACH ROW EXECUTE FUNCTION public.muse_guard_literary_history();
CREATE TRIGGER muse_delivery_artifact_immutable BEFORE UPDATE OR DELETE
    ON public.muse_delivery_artifact FOR EACH ROW
    EXECUTE FUNCTION public.muse_guard_literary_history();
REVOKE ALL ON public.muse_delivery,public.muse_delivery_artifact FROM muse_eval;
GRANT SELECT,INSERT ON public.muse_delivery,public.muse_delivery_artifact TO muse_app;