Build and post a Canvas Quiz (the actual graded object with questions) as a draft from source content the teacher provides — a Canvas lesson page, a PDF reading, a Google Doc, or plain text. Use when the teacher says "post a quiz", "create a quiz", "make a quiz", "build a Canvas quiz", "generate quiz questions", "convert this quiz to Canvas", or drops in a document and wants quiz questions from it. Drafts AI-generated questions OR extracts existing ones from a pre-written quiz doc; teacher reviews with source citations, edits, and the skill creates the Canvas Quiz as a draft. Composes with plan-assessment for quiz-style assessments.