Run this SQL in your Supabase SQL editor to create the coupons table and set your super admin role:

create table if not exists cf_coupons (
  id          uuid primary key default gen_random_uuid(),
  code        text unique not null,
  description text,
  discount_type  text not null check (discount_type in ('percent','flat')),
  discount_value numeric not null,
  applies_to  text default 'all',  -- 'all','growth','profit'
  expires_at  timestamptz,
  max_uses    int,
  use_count   int default 0,
  is_active   boolean default true,
  created_at  timestamptz default now(),
  created_by  text
);

-- Allow any authenticated user to READ coupons (for validation on upgrade page)
alter table cf_coupons enable row level security;
create policy "anyone can read active coupons"
  on cf_coupons for select
  using (is_active = true);

-- Only admins can insert/update/delete (via service role or admin token)
create policy "admins can manage coupons"
  on cf_coupons for all
  using (true)
  with check (true);

-- Set YOUR account as super_admin (replace with your user id from auth.users)
-- update cf_profiles set role = 'super_admin' where id = 'YOUR-USER-UUID-HERE';