setup.md's copy of the swarm-bootstrap policy still granted only the
controller's first six paths, while eight units now act with the
bootstrap token. The policy moves to
nix/host-modules/swarm-bao-bootstrap-policy.hcl, now covering every path
those units call. module-eval-bao-grants reads that file and fails
when a unit whose script uses the token calls a path the file does not
grant.
