-- ECR-025 OpsCMS FeedSlot (read catalog)
CREATE TABLE IF NOT EXISTS ops_feed_slots (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  code varchar(64) NOT NULL UNIQUE,
  title varchar(128) NOT NULL,
  slot_key varchar(64) NOT NULL,
  placement varchar(32) NOT NULL
    CHECK (placement IN ('home','explore','ask')),
  active boolean NOT NULL DEFAULT true,
  system boolean NOT NULL DEFAULT false,
  created_at timestamptz NOT NULL DEFAULT now(),
  updated_at timestamptz NOT NULL DEFAULT now()
);
CREATE INDEX IF NOT EXISTS idx_ops_feed_slots_active ON ops_feed_slots(active);
INSERT INTO ops_feed_slots(code, title, slot_key, placement, active, system)
VALUES ('home_feed_main', '首页主信息流位', 'home.main', 'home', true, true)
ON CONFLICT (code) DO NOTHING;