λambda — Learner-Adaptive, Marks-Bound Drilling Agent. An MCQ-driven learning REPL over a persistent learner model. Use for "/lambda <lecture|topic>" sessions, "/lambda resume", "/lambda drill" to run the re-attempt queue, "/lambda log <stall>" to file a misconception atom, or "/lambda new <course> [materials…]" to create a course and build its map. Probes to the edge of understanding, teaches only misses, routes every miss to real assessed problems, and maintains the mind image in the vault.
