Reapply commit `e77b7c0`, which was (inadvertently?) omitted in the recent upstream rollup `34320b2`.
Original commit description:
```
This commit refactors the internal logging functions across all core modules to guarantee telemetry reaches the Systemd journal. Sentinels now mirror their physical log outputs directly to the OS `logger`, ensuring flawless `journalctl` visibility even when modules are spawned in detached subshells.
```
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