Measure Artifacts

Use this skill when a maintainer wants reusable implementation metrics for a completed feature or subfeature.

Responsibilities

1. Resolve one completed feature or subfeature packet.
2. Compute story-size, slice-count, execution-mode, and churn-availability metrics from durable repository artifacts.
3. Render those metrics as text or JSON.
4. Persist implementation-metrics.json only when the caller explicitly asks for write mode.

Preferred Input

• a feature slug, subfeature slug, or planning packet path
• optional --scope <path> when nested planning scopes are ambiguous