Design a complete Waldorf lesson for Grade 1-12 students. Supports 45-minute subject lessons, 90-minute double periods, and 120-minute Main Lessons. Use this skill whenever the user asks to design, plan, or create a lesson for any subject and any grade — including requests like '幫我設計一堂課', '45分鐘英文課', '八年級歷史課設計', 'lesson design', '連堂', '主課程設計', or any mention of a specific text, poem, theme, or topic and wants it turned into a lesson. Also trigger when the user provides a text or material and asks 'this can be used for a lesson' or '這可以怎麼上'. This skill covers ALL grades (1-12), ALL subjects, and ALL formats (45/90/120 min) with overlay support.