create table public.profiles ( id uuid references auth.users(id) on delete cascade primary key, name text not null default '', email text not null default '', exp text default '', obj text default '', xp integer default 0, missions_completed text[] default '{}', streak integer default 1, last_active text default '', week_activity integer[] default '{0,0,0,0,0,0,0}', chat_history jsonb default '[]', quiz_scores jsonb default '{}', created_at timestamptz default now() ); alter table public.profiles enable row level security; create policy "own_profile" on public.profiles for all using (auth.uid() = id) with check (auth.uid() = id);