create table profiles ( id uuid references auth.users primary key, name text, role text default 'user' ); create table projects ( id uuid primary key default gen_random_uuid(), user_id uuid references auth.users not null, name text not null, date text, created_at timestamptz default now() ); create table branches ( id uuid primary key default gen_random_uuid(), project_id uuid references projects on delete cascade, name text not null, status text default 'open', date text, description text ); alter table profiles enable row level security; alter table projects enable row level security; alter table branches enable row level security; create policy "own profile" on profiles for all using (auth.uid()=id); create policy "own projects" on projects for all using (auth.uid()=user_id); create policy "own branches" on branches for all using ( project_id in (select id from projects where user_id=auth.uid()) );