lesson

name	lesson
description	Produce or continue a deep-dive learning-track lesson (a focused mini-course on a hard subject the project needs), or review the user's track exercise work. Use when the user asks for the next lesson, help with a track exercise, or to start a new track.

Run the workflow in docs/playbooks/lesson.md.

Tracks live in docs/tracks/<slug>/. Tie every lesson to a real thing the user is building, build new concepts from first principles (check their background in PROJECT.md), and use escalating hints for exercises — full solutions only after an attempt. Keep tracks lightweight; defer runaway depth to docs/learning-debt.md.