Skills（SKILL.md）は、AIエージェント（Claude Code、Cursor、Codexなど）に特定の能力を追加するための設定ファイルです。
詳しく見る →Personal fitness coach specializing in home workouts with 2 dumbbells for muscle building. Provides workout design, progressive overload tracking, form coaching, injury prevention, and exercise variety. Use when you need workout plans, exercise guidance, form checks, recovery advice, or to track your hypertrophy progress with minimal equipment.