Use this skill when the user asks to "add a skill", "create a skill", "new skill", "write a skill for", "skill for cx <something>", "add a user-facing skill", "create a SKILL.md", "teach an agent how to use", "agent skill for", "document a command as a skill", "make a skill", "add skill to skills/", "create agent instructions for", "build a skill", or wants to create a new user-facing skill in the skills/ directory that teaches AI agents how to use a cx CLI command. Use this even when the user is following the add-command workflow and reaches the skill creation step.