Logging messages are usually developed based on the stderr logging,
which shows code location and log topics as context, and especially
higher log level messages can be cryptic or useless without that
context.
This context is not shown in journalctl by default, and so usually is
missing from logs submitted by users. In principle it is available in
journalctl but requires extra work to show it.
Fix by prepending the log topic to the messages, like Pipewire logging
does. Also show code locations if log level is high enough.