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rcourtman
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Live proof on a real systemd host (Debian 12 container, full
install/report/update/uninstall cycle) caught what no unit test did:
NoNewPrivileges=true blocks sudo outright, so the --grant-smart and
--grant-pct helpers failed inside the service and SMART/pct silently
disappeared while the install reported success. A unit with an active
grant now sets NoNewPrivileges=false, keeping the rest of the hardening;
a grantless least-privilege install keeps NNP enabled. Docs and contracts
state the trade-off: each grant is a scoped, auditable widening.
Also proven in the same live cycle: the flag-conflict refusals, user and
sudoers provisioning, wrapper execution as the service user, the healthy
privilege report ({runningAsRoot:false, serviceUser:pulse-agent,
smartctlHelper:true}), --update preserving the profile without repeated
flags, and uninstall removing the sudoers file and helpers.