# Telemetry Metrics Helpers Prep — PREP-TELEMETRY-OBS-51-001

Status: Draft (2025-11-20)
Owners: Telemetry Core Guild · Observability Guild
Scope: Metrics helpers for golden signals with exemplar support and cardinality guards.

## Needs
- Golden signal definitions (latency, errors, saturation, traffic) with exemplar tagging guidance.
- Roslyn analyzer rules to prevent unsanitised labels.

## Handoff
Prep artefact; fill when golden signal label set is finalized.