CREATE TABLE incident_notes (
    id uuid PRIMARY KEY,
    incident_id uuid NOT NULL REFERENCES incidents(id) ON DELETE CASCADE,
    author text NOT NULL CHECK (char_length(author) BETWEEN 1 AND 160),
    body text NOT NULL CHECK (char_length(body) BETWEEN 1 AND 2000),
    created_at timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX incident_notes_history_idx ON incident_notes (incident_id, created_at ASC, id ASC);