Observations

Neutral name handed to Observation.createNotStarted. The semantic span name is owned by the registered io.micrometer.observation.ObservationConvention (in the observability module), whose getName() overrides this at span start — so the core never hard-codes a telemetry name. This placeholder is only ever visible in the rare fallback where a real (non-no-op) registry is present without the embabel conventions.

Run work inside an observe{} span carrying context. The span always closes — and is errored if work throws — because Observation.observe owns the scope, so no scope can leak.