Frontend now handles syslog lines from producers that don't use
structured-data (notably the SSH PROMPT_COMMAND hook, which emits
'CMD uid=0 user=root src=IP pwd=… cmd=…' as a plain logger message).
A new parseEventBody utility splits the body into head + key/value
pairs and preserves the final value verbatim so commands stay intact.
Dashboard and LiveLogs use this parser to render consistent pills
whether the structure came from SD params or from the MSG body.
