journaldUnits named "authelia"; upstream derives the unit from the instance
name, so the running unit is authelia-swarm and that entry matched nothing.
The receiver's units list is an allowlist, so a name matching no journal
entry is silently absent -- it reads as a service with nothing to say rather
than as a misconfiguration, and it excluded the busiest source on the box.
Use the unitName binding the rest of this module already uses, so the
allowlist cannot drift from the unit again.
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