feat(education): complete student core loop delivery

tools/education-student-harness/adapter.js

@@ -0,0 +1,34 @@
+'use strict';
+
+const API_PREFIX = '/app-api';
+
+function buildRequest(path, options = {}, accessToken = '') {
+  const headers = {
+    Accept: 'application/json',
+    ...(options.body ? { 'Content-Type': 'application/json' } : {}),
+    ...(accessToken ? { Authorization: `Bearer ${accessToken}` } : {}),
+  };
+  return { url: `${API_PREFIX}${path}`, options: { ...options, headers } };
+}
+
+function answerCommand(session, questionSequence, selectedAnswer, idempotencyKey, clientSequence) {
+  return {
+    sessionId: session.id,
+    questionSequence,
+    selectedAnswer,
+    idempotencyKey,
+    clientSequence,
+    expectedSessionVersion: session.sessionVersion,
+  };
+}
+
+function applyAnswerResult(session, result) {
+  return {
+    ...session,
+    sessionVersion: result.sessionVersion,
+    serverVersion: result.serverVersion ?? result.sessionVersion,
+    acceptedSequence: Math.max(session.acceptedSequence || 0, result.acceptedSequence || 0),
+  };
+}
+
+module.exports = { buildRequest, answerCommand, applyAnswerResult };