feat: productionize learning engine and classroom

OpenMAIC/lib/qa/knowledge.ts

@@ -11,7 +11,8 @@ import type { KnowledgePack, QuizPack } from '@/lib/bundle/types';
 
 export interface CoursewareKnowledge {
   coursewareId: string;
-  version: number;
+  /** Present for legacy multi-publish courseware records; unique Makelore courses omit it. */
+  version?: number;
   language?: string;
   title: string;
   knowledge: KnowledgePack;