_savedAt). Credenziali solo in localStorage, mai nell'HTML scaricato. Tabella richiesta: mtg_sync (vedi sotto).create table if not exists mtg_sync ( user_id uuid primary key references auth.users(id), data jsonb, saved_at bigint ); alter table mtg_sync enable row level security; create policy "own row" on mtg_sync for all using (auth.uid() = user_id) with check (auth.uid() = user_id);