comprehend — teach-to-mastery loop

Make the human deeply understand the work — verified, not assumed.

Distilled from Thariq Shihipar's teaching prompt (research/entities/tool/thariq-teach-to-mastery-prompt.md). This is a composition skill: it fires native primitives (AskUserQuestion, /goal P19, a persisted checklist doc P6) and adds only pedagogical sequencing on top — no infrastructure reimplemented.

Interactive-only. comprehend depends on a live human to restate, answer quizzes, and signal mastery. In an autonomous, background, or piped run with no human responder, it must abort — never self-mark checklist boxes or self-certify understanding. The verification signal is the human's answer; without a human there is no signal.

The one objective