Interface HealthDiagnosticsObservation

One minimized health observation: the latest outcome for one approved indicator alias.

indicatorAlias is the display alias the application explicitly allowlisted for the indicator's registered name — never the name itself. status is present only when state is reported. latencyMs and ageMs are monotonic measurements on the runtime clock: latencyMs is how long the check took, ageMs the elapsed time since the observation was captured, and both are null exactly when the alias was never observed. No absolute time, no error text, and no indicator data is admitted; a status outside up/degraded/down is never carried — such a check is projected as failed.