Create Skill

When the user asks to create a new skill, follow this convention.

Skill kinds

There are three kinds of skills. Determine which one applies before creating anything:

Kind	Location	Purpose
Global	`~/.agents/skills/<name>/`	Personal skills usable across all projects; linked into agent dirs
Repo internal	`<repo-root>/.agents/skills/<name>/`	Dev-workflow skills for contributors to this repo only (e.g. release helpers, SDK updaters)
Repo public	`<repo-root>/skills/<name>/`	Skills shipped with the package; users install via `npx skills add <owner>/<repo>`

Ask or infer from context which kind the user wants. The kind determines placement and whether linking is needed.