CREATE TABLE IF NOT EXISTS coupon_stamps (
  id uuid DEFAULT gen_random_uuid() PRIMARY KEY,
  email text UNIQUE NOT NULL,
  password text NOT NULL DEFAULT '1004',
  stamps jsonb NOT NULL DEFAULT '{}',
  updated_at timestamptz DEFAULT now()
);

ALTER TABLE coupon_stamps ENABLE ROW LEVEL SECURITY;

CREATE POLICY "public_access" ON coupon_stamps
  FOR ALL USING (true) WITH CHECK (true);