B2B-30: adds personal code to account, company admins invites members

supabase/migrations/20250620191934_is_company_admin.sql

@@ -0,0 +1,22 @@
+create or replace function public.is_company_admin(account_slug text)
+returns boolean
+set search_path = ''
+language plpgsql
+as $$
+declare
+  is_owner boolean;
+begin
+  select exists (
+    select 1
+    from public.accounts_memberships am
+    join public.accounts a on a.id = am.account_id
+    where am.user_id = auth.uid()
+      and am.account_role = 'owner'
+      and a.slug = account_slug
+  ) into is_owner;
+
+  return is_owner;
+end;
+$$;
+
+grant execute on function public.is_company_admin(text) to authenticated, service_role;