-- The quorum (2026-11-03, ADR 0013). Additive only: nothing is dropped, nothing
-- an older image needs is rewritten. (0010 is kept for lot V: the gap is meant.)
--
-- Yvv, 2026-11-02: « C suit le cran, mais c'est une proposition par défaut,
-- variable modifiable par l'auteur initial du texte… c'est plutôt un quorum ».
-- The floor C of *for* votes put in front of the formula gives way to a quorum Q
-- by level: from Q voters on, the share of the inertia applies; below it, the
-- voters missing count as against (2026-11-03: « Ils comptent comme non »).
-- `documents.vote_floor` stays: the reference quorum Q₀, read for the reference
-- participation p0 = 2Q₀/W only (never an article's quorum), and as every
-- level's quorum while `quorums` is NULL. An older image ignores both columns.

-- The quorum of each level, 1 to 5, as JSON `[Q1, Q2, Q3, Q4, Q5]`: the default
-- of an article at that level (Yvv: « 12 · 12 · 50 · 50 · 50 » in Monnaie libre,
-- 1 everywhere in the test group). NULL: a base the quorum amendment
-- (src/quorum_amend.rs) has not reached yet.
ALTER TABLE documents ADD COLUMN quorums TEXT;

-- The quorum of an article, set by the author of its first version before the
-- first vote (src/quorum.rs; Yvv: « L'auteur, avant le 1er vote »). NULL: the
-- quorum of its level. A change of its inertia is judged on it too.
ALTER TABLE units ADD COLUMN quorum INTEGER;

-- Every change of an article's own quorum: who, from what, to what.
CREATE TABLE quorum_changes (
    id           INTEGER PRIMARY KEY AUTOINCREMENT,
    unit_id      TEXT NOT NULL REFERENCES units(id),
    doc_id       TEXT NOT NULL REFERENCES documents(id),
    from_quorum  INTEGER,                    -- NULL: the quorum of its level
    to_quorum    INTEGER,                    -- NULL: back to the quorum of its level
    identity_id  TEXT NOT NULL REFERENCES identities(id),
    at           TEXT NOT NULL
);
CREATE INDEX quorum_changes_unit ON quorum_changes(unit_id);

-- Quorum amendments (src/quorum_amend.rs): the quorums by level of the seed,
-- written into an existing document that holds none, decided once per document.
-- Each decision is kept here: applied, refused (and why), or present.
CREATE TABLE quorum_amendments (
    amendment_id  TEXT NOT NULL,
    doc_id        TEXT NOT NULL REFERENCES documents(id),
    from_quorums  TEXT,                      -- what the document held: NULL, or its JSON
    to_quorums    TEXT NOT NULL,             -- the seed's, JSON
    outcome       TEXT NOT NULL,             -- applied | refused | present
    reason        TEXT,                      -- why it was refused
    at            TEXT NOT NULL,
    PRIMARY KEY (amendment_id, doc_id)
);