Authoring Metricly's data-layer context

You are editing files that an analytical agent will read at query time. Lazy descriptions silently degrade every query that touches the affected entity. This skill exists so the conventions stay tight.

1. The contract

The descriptions on metrics, dimensions, and semantic models are authoritative. Consumer agents trust them as the source of truth for unit, computation, source rollup, applicable filter rules, and known caveats. They are not commentary.

Two surfaces matter: