teach

Teach the user a new skill or concept over multiple sessions, building a persistent teaching workspace under ~/.jstack/teach. Use when the user says /teach, "teach me X", "help me learn X", "walk me through X", "prep me for X", "get me up to speed on X", "I want to understand X", or "tutor me on X". Stateful: it grounds every lesson in a mission, gathers trusted resources, produces beautiful interactive HTML lessons, and tracks what the user has learned.