This handles the audience and insight layer of Salesforce Data Cloud: creating segments, publishing them, managing calculated insights, and troubleshooting the member counts or SQL when things don't add up. You'll reach for it after your DMOs and identity resolution are in place but before you activate anything downstream. It wraps the sf data360 segment and calculated-insight commands, forces you to verify with counts instead of assuming success, and includes a readiness classifier that checks whether your org is actually ready for segment work. The biggest gotcha is that segment SQL is not SOQL, and the members command returns opaque IDs, so you'll end up writing joins when you need readable details. Solid if you're doing repeatable audience builds with JSON definitions.
npx skills add https://github.com/forcedotcom/afv-library --skill segmenting-datacloud