FIXED: [Opcenter] systemd implements quasi subset of shell expansion without subshell execution. When forcing a housekeeping run, invoke sh directly to grab backend pid. Resolves Let's Encrypt certificate renewal if nightly panel updates disabled. CHANGED: [DNS] get_zone_data() on a parented domain returns null. [Scopes] Both metrics.enabled + cp.update-policy pull in apnscp/install-services role.