Agent Skills: skills-best-practices

Use when creating, extracting, reviewing, or refactoring agent skills. Covers self-contained skill packaging, SKILL.md structure, trigger descriptions, progressive disclosure, gotchas, defaults, bundled scripts, eval design, and with-skill vs baseline iteration. Use this whenever the user asks to turn docs or a workflow into a skill, improve a SKILL.md, audit skill quality, or make a skill pack more self-contained.