create table if not exists sweep_events (
    id bigserial primary key,
    instrument_id bigint not null references instruments(id),
    timeframe text not null,
    side_swept text not null,
    pool_id bigint not null references liquidity_pools(id),
    sweep_high numeric(20,10) not null,
    sweep_low numeric(20,10) not null,
    sweep_ts timestamptz not null,
    close_back_inside boolean not null default false,
    validation_level text not null default 'weak',
    status text not null default 'active',
    meta jsonb not null default '{}'::jsonb,
    created_at timestamptz not null default now(),
    unique (instrument_id, timeframe, pool_id, sweep_ts)
);

create index if not exists idx_sweep_events_instr_tf_ts_desc
on sweep_events (instrument_id, timeframe, sweep_ts desc);

create index if not exists idx_sweep_events_pool_ts_desc
on sweep_events (pool_id, sweep_ts desc);