-- broker.broker_set_tenant
-- Sets the RLS tenant context for the current transaction (SET LOCAL semantics
-- via set_config(..., true)). Callers must invoke this before enqueue/claim
-- if they are not using the 'default' tenant.

CREATE OR REPLACE FUNCTION broker.broker_set_tenant(p_tenant_id TEXT)
RETURNS VOID
LANGUAGE SQL
AS $$
    SELECT set_config('broker.tenant_id', p_tenant_id, true);
$$;

COMMENT ON FUNCTION broker.broker_set_tenant IS 'Sets broker.tenant_id for the current transaction only (SET LOCAL semantics)';