OptionalaggregateOptionalerrorsOptionaleventHow many events the run's journal holds, recorded at the moment the run terminated.
Persisted so a finished run can be summarised WITHOUT opening its journal. Counting the lines of a 12–13 k-event journal on network storage is one of the four full-file reads that made a run listing take 73 seconds; this number is free, and it is the same number the emitter actually wrote.
Optional only for backward compatibility: a result.json written before this field existed
has none, and the reader falls back to a single journal pass for those.
OptionallatestThe run's final journal event, persisted for the same reason as eventCount — the summary surfaces report the latest event type and message, and reading the journal's last line to recover something the emitter had in hand is a full-file read for one line.
OptionalresumableWhen non-empty, this run is resumable: latest checkpoint event sequence.
OptionalwarningTotal number of 'warning' events emitted (length of warnings).
OptionalwarningsNon-fatal warnings surfaced during the run (rollup of 'warning' events).
result.json — written once at run end (success or failure).