Module models 

Structs

Completeness

Diagnosis

MetricObservation

Observation

Versioned observation envelope. Every collector output uses this. Missing is None, never zero. Timeouts are errors, never empty Ok.

ResourceRecord

RuntimeOverview

Snapshot

SnapshotDelta

SourceId

TaskRecord

Enums

FindingStatus

MetricKind

Metric semantics matter: counters reset, gauges fluctuate, histograms sample.