feat: add opt-in answer selection and global hidden panel

tests/adapter.test.cjs

@@ -318,3 +318,93 @@ test('initial HTML parsing and atomic full SPA render do not block a new form',
   assert.equal(question.stem, '同步渲染的新题目？');
   page.adapter.stop();
 });
+
+test('ordinary pages do not observe requests, capture questions or intercept copy events', async () => {
+  const page = fakePage(async () => new Response(JSON.stringify({ listQues: [single()] }), { headers: { 'content-type': 'application/json' } }));
+  page.win.location.href = 'https://ordinary.example/account';
+  page.doc.title = '普通网页标题不应成为题库';
+  const originalFetch = page.win.fetch;
+  const originalOpen = page.win.XMLHttpRequest.prototype.open;
+  const originalSend = page.win.XMLHttpRequest.prototype.send;
+  const listeners = [];
+  const observers = [];
+  page.win.addEventListener = type => listeners.push(type);
+  page.win.removeEventListener = () => {};
+  page.win.MutationObserver = class {
+    constructor(callback) { observers.push(callback); }
+    observe() {}
+  };
+  page.doc.createElement = () => assert.fail('普通网页不能注入复制恢复样式');
+  const changes = [];
+  const adapter = create({ window: page.win, document: page.doc, observeNetwork: false,
+    onQuestions: values => page.received.push(...values), onBankChange: bank => changes.push(bank) });
+  adapter.start();
+  adapter.setCopyEnabled(true);
+  assert.equal(adapter.isSupportedPage(), false);
+  assert.equal(adapter.getCurrentQuestion(), null);
+  assert.equal(adapter.captureCurrent(), null);
+  assert.deepEqual(adapter.getCurrentBank(), { bankId: '', bankName: '', taskId: '', loading: false });
+  await page.win.fetch('/upm/start?praId=not-a-bank');
+  const xhr = new page.win.XMLHttpRequest();
+  xhr.open('GET', '/upm/start?praId=not-a-bank'); xhr.send(); xhr.respond({ listQues: [single()] });
+  await flush();
+  adapter.stop();
+  assert.equal(page.win.fetch, originalFetch);
+  assert.equal(page.win.XMLHttpRequest.prototype.open, originalOpen);
+  assert.equal(page.win.XMLHttpRequest.prototype.send, originalSend);
+  assert.deepEqual(page.received, [], '普通页响应即使碰巧形似练习数据也不能写入题库');
+  assert.deepEqual(listeners, [], '普通页无需安装copy、selection或导航监听');
+  assert.deepEqual(observers, [], '普通页不需要观察整个DOM');
+  assert.ok(changes.every(bank => bank.bankName === '' && bank.bankId === ''));
+});
+
+test('network observation can be disabled independently on a supported exercise page', async () => {
+  const page = bankPage();
+  const originalFetch = page.win.fetch;
+  const originalOpen = page.win.XMLHttpRequest.prototype.open;
+  const adapter = create({ window: page.win, document: page.doc, observeNetwork: false,
+    onQuestions: values => page.received.push(...values) });
+  adapter.start();
+  assert.equal(adapter.isSupportedPage(), true);
+  assert.equal(page.received.length, 1, '已知站点的页面采集不依赖网络钩子');
+  assert.equal(page.received[0].stem, '升温时应选择？');
+  assert.equal(page.received[0].bankName, '判断题库1');
+  assert.equal(page.received[0].answerStatus, 'missing');
+  assert.equal(page.win.fetch, originalFetch);
+  assert.equal(page.win.XMLHttpRequest.prototype.open, originalOpen);
+  adapter.stop();
+});
+
+test('a known root appearing later is detectable without automatically enabling network observation', () => {
+  const page = fakePage();
+  page.win.location.href = 'https://ordinary.example/demo';
+  page.doc.title = '显式题目结构演示';
+  let exerciseRoot = null;
+  page.doc.querySelector = selector => selector === ROOT_SELECTOR_FOR_TEST ? exerciseRoot : null;
+  const originalFetch = page.win.fetch;
+  const originalOpen = page.win.XMLHttpRequest.prototype.open;
+  const adapter = create({ window: page.win, document: page.doc, observeNetwork: false,
+    onQuestions: values => page.received.push(...values) });
+  adapter.start();
+  assert.equal(adapter.isSupportedPage(), false);
+  assert.equal(adapter.getCurrentBank().bankName, '');
+  exerciseRoot = {};
+  assert.equal(adapter.isSupportedPage(), true);
+  assert.equal(adapter.getCurrentBank().bankName, '显式题目结构演示');
+  assert.equal(page.win.fetch, originalFetch);
+  assert.equal(page.win.XMLHttpRequest.prototype.open, originalOpen);
+  assert.deepEqual(page.received, []);
+  adapter.stop();
+});
+
+test('a lookalike hostname is not treated as the supported learning platform', () => {
+  const page = fakePage();
+  page.win.location.href = 'https://www.shhuayi-elearning.cn.ordinary.example/';
+  page.doc.title = '页面标题不是题库';
+  const adapter = create({ window: page.win, document: page.doc, observeNetwork: false });
+  adapter.start();
+  assert.equal(adapter.isSupportedPage(), false);
+  assert.equal(adapter.getCurrentBank().bankName, '');
+  assert.equal(adapter.getCurrentQuestion(), null);
+  adapter.stop();
+});