The hive-priv container allowlist's explicit MANAGER_NAME allow is
redundant — the bootstrap container's name passes the generic
agent-name char validation anyway. Describe the allowlist as just the
agent-name convention + the sibling service containers.
Port-range, network-isolation, state-dir, web-UI-port, priv allowlist,
and rebuild-source mentions now refer to the root/bootstrap container
rather than 'the manager' — no structural manager exists (root-ness is
topological). Real artifact names (the manager.nix template toplevel,
/run/hyperhive/manager/mcp.sock) are left as-is.