create table if not exists project_members
(
    id           bigserial
        primary key,
    project_uuid uuid                     not null,
    user_uuid    uuid                     not null,
    scope        varchar(255)             not null,
    joined_at    timestamp with time zone not null,
    unique (project_uuid, user_uuid)
);

create unique index if not exists idx_project_members_project_user
    on project_members (project_uuid, user_uuid);