feat: productionize learning engine and classroom

OpenMAIC/app/api/runtime/v1/bindings/validate/route.ts

@@ -0,0 +1,25 @@
+import type { NextRequest } from 'next/server';
+import { authorizeLearningRuntime, runtimeUnauthorized } from '@/lib/makelore-runtime/auth';
+import { loadMakeloreCourse, parseLearningBinding } from '@/lib/makelore-runtime/course-store';
+import { isRuntimeOpenRequest } from '@/lib/makelore-runtime/protocol';
+
+export async function POST(request: NextRequest) {
+  if (!authorizeLearningRuntime(request)) return runtimeUnauthorized();
+  const body: unknown = await request.json().catch(() => null);
+  if (!isRuntimeOpenRequest(body)) return Response.json({ error: 'invalid_request' }, { status: 400 });
+  const binding = parseLearningBinding(body.binding.key);
+  if (!binding) return Response.json({ error: 'invalid_binding' }, { status: 400 });
+  const course = await loadMakeloreCourse(binding.courseId, binding.contentHash);
+  if (!course) return Response.json({ error: 'course_not_found' }, { status: 404 });
+  return Response.json({
+    type: 'learning.course.snapshot',
+    schema_version: 1,
+    binding_source_sequence: 0,
+    payload: {
+      courseId: course.courseId,
+      contentHash: course.contentHash,
+      title: course.title,
+      sceneCount: course.sceneCount,
+    },
+  });
+}