Operate healthd safely on a local host: detect environment, install/build binary, bootstrap config, validate and run one-shot checks, test notifications, inspect alert history. Use when asked to deploy healthd, troubleshoot health checks, migrate from cron, or verify alert delivery. Daemon lifecycle (start/stop/restart) is owned by an external supervisor (process-compose, systemd, launchd) — this skill drives healthd directly, not the supervisor.
2026-04-26