Test Tagging skill: what it does and how to install it

What it does. Classifies each existing test by positive or negative behaviour and additive traits such as boundary, integration, security and performance. It scans names, assertions, inputs and setup, preserves existing tags, then either applies framework-specific attributes or produces a per-test mapping and non-zero distribution summary. Edit mode validates .NET changes with dotnet build and test discovery.

When to use it. Use for auditing or tagging an existing test suite and reviewing its coverage shape. Do not use it for writing or running tests, framework migrations, coverage or quality audits, or behavioural gap analysis; report-only frameworks are not edited.