create table if not exists public.todos (
  id           bigserial primary key,
  user_id      uuid        not null,
  title        text        not null check (length(title) between 1 and 500),
  completed    boolean     not null default false,
  created_at   timestamptz not null default now()
);

create index if not exists todos_user_id_created_at_idx
  on public.todos (user_id, created_at desc);