The metadata snapshot deleted every SCUM sqlite query job while persisting, so
the recurring database poll lost its job records as soon as anything wrote the
snapshot and left its stdout/stderr streams behind. Those polls are the only
producer for the platform scum_user and scum_vehicle tables, and the service
already retires older terminal polls with their streams, so the snapshot no
longer drops them.
Startup now removes job log streams whose job no longer exists, keeping the
autonomous lifecycle streams the Run posts without a platform job. That clears
the streams left by the removed poll producers instead of carrying them in
every snapshot.