The mollifier read-fallback's SyntheticRun previously carried just
enough fields for the API retrieve/trace/spans/events/attempts/metadata
endpoints. Phase C5 (replay) needs the buffered run to be passable
where ReplayTaskRunService expects a TaskRun. Adds the missing fields:
id, runtimeEnvironmentId, engine, workerQueue, queue, concurrencyKey,
machinePreset, realtimeStreamsVersion, seedMetadata, seedMetadataType,
runTags. All populated from the engine-trigger snapshot embedded in
the buffer entry.
Also closes a pre-existing typecheck gap in
ApiRetrieveRunPresenter.synthesiseFoundRunFromBuffer — workerQueue
wasn't populated and the file had been failing tsc. Now surfaces the
buffered run's workerQueue, defaulting to "main" (the Prisma default).
Dan Sutton
612babf6cc