-- Student profile data (guardians, pickups, curriculum logins) is admin-edit-only.
-- Reads are unchanged (parents/teachers/students keep their "... read" policies);
-- the students table itself is already admin-write via "admins manage students".

DROP POLICY IF EXISTS "guardians write parent or admin" ON public.student_guardians;
CREATE POLICY "guardians write admin" ON public.student_guardians FOR ALL TO authenticated
  USING (public.current_user_has_role('admin')) WITH CHECK (public.current_user_has_role('admin'));

DROP POLICY IF EXISTS "pickups write parent or admin" ON public.authorized_pickups;
CREATE POLICY "pickups write admin" ON public.authorized_pickups FOR ALL TO authenticated
  USING (public.current_user_has_role('admin')) WITH CHECK (public.current_user_has_role('admin'));

DROP POLICY IF EXISTS "curriculum write parent or admin" ON public.student_curriculum_logins;
CREATE POLICY "curriculum write admin" ON public.student_curriculum_logins FOR ALL TO authenticated
  USING (public.current_user_has_role('admin')) WITH CHECK (public.current_user_has_role('admin'));