Is there any way to sync RLS policies for local development?

There is no set way of doing this, but policies are created with SQL. You can use any migration tool and create these by hand so you can sync across multiple environments. Take a look at my project where I make use of a migration tool called ley https://github.com/silentworks/waiting-list/blob/main/migrations/00004-create_rls_policy_profiles.cjs

Ok, good to know. Thanks for the example!