Module manifest 

Metric manifest types for the /metrics/manifest endpoint.

Provides MetricDescriptor, MetricRegistry, and ManifestResponse for exposing machine-readable metric metadata. Field semantics align with OpenMetrics (type, description, unit) and OTel Advisory Parameters (labels, buckets). Novel fields (group, use_cases, dashboard_hint) are HyperI extensions.

Standards Alignment

Field	Standard
type	OpenMetrics TYPE
description	OpenMetrics HELP
unit	OpenMetrics UNIT
labels	OTel Advisory Attributes
buckets	OTel Advisory ExplicitBucketBoundaries
group, use_cases, dashboard_hint	HyperI extensions

Structs

ManifestResponse

JSON response for GET /metrics/manifest.

MetricDescriptor

Describes a single registered metric for the manifest.

MetricRegistry

Cloneable handle to the metric registry.

Enums

MetricType

Metric type discriminator (aligns with OpenMetrics TYPE).