-- Modules (2026-10-31, ADR 0009): the title of a document and the order of the
-- articles of each of its sections, voted like its articles. Additive only:
-- every unit of before is an article, nothing else changes.
--
-- A module is a unit of its own kind. Its versions are proposals, voted,
-- counted, signed on the chain and brought into force like those of an
-- article; their kind says what they hold:
--   title — `title` is the title of the document in its source language;
--   order — `body` is the order of the section, one article (unit id) per line.

ALTER TABLE units ADD COLUMN kind TEXT NOT NULL DEFAULT 'article';  -- article | title | order

-- The modules added to an existing document (src/module_amend.rs): decided
-- once per document, from what it holds then (its title, the order of each
-- section), never touching an article or a vote. Each decision is kept here:
-- applied (and what was created), refused (and why), or present (the document
-- was born with its modules).
CREATE TABLE module_amendments (
    amendment_id  TEXT NOT NULL,
    doc_id        TEXT NOT NULL REFERENCES documents(id),
    outcome       TEXT NOT NULL,             -- applied | refused | present
    reason        TEXT,                      -- why it was refused
    created       TEXT,                      -- JSON array of the codes of the modules created
    at            TEXT NOT NULL,
    PRIMARY KEY (amendment_id, doc_id)
);