Interface QueueSourceAttemptObservation

One observed queue attempt as a queue source retains it (M98f).

sequence is the source-local, dense cursor currency of IQueueDiagnosticsSource.read. queueAlias is the display alias the application approved for the job name — never the name itself — and jobAlias a session-local j<N> alias for the raw job identifier, which never leaves the collector. durationMs is the monotonic elapsed time from dispatch until the settlement call returned; ageMs the monotonic elapsed time since then. No payload, header, claim token, attempt limit or thrown value is admitted.