skillify — turn a working session into a tested, permanent skill

/skillify is the verb at the end of a workflow. You built something ad-hoc in conversation, it worked, and you want it to be permanent — not a screenshot in a chat log, but a skill a future agent reaches for automatically. Saying "skillify it" runs the distillation.

It is a composition skill — like /checkit and /autonomous, it fires existing primitives in sequence. It does not reimplement scaffolding, tests, the resolver, or filing. Its deterministic core (scripts/skillify_check.py) is the gate, not a reimplementation of the pieces.

The one rule