- Added restart_netd_for_hosts_cache() to hosts_enforcer.sh with PID-stamp
deduplication to prevent double-restarts across enforcer invocations
- Removed explicit netd restart from deploy.sh (caused double-restart
that broke ConnectivityService binder link and dropped default route)
- deploy.sh: wait 10s after starting focus_daemon.sh for enforcer to
complete its single netd restart before companion app install
- Misc updates to dns_enforcer.sh and config.sh
