feat: add local question bank reset with stale-tab isolation

tests/adapter.test.cjs

@@ -833,6 +833,26 @@ test('DOM standard feedback carries bound or known trusted answer evidence', asy
   page.adapter.stop();
 });
 
+test('library reset clears cached standards and rejects pre-reset answer receipts after capture resumes', async () => {
+  const page = bankPage(async () => new Response(JSON.stringify({ listQues: [single()] }), { headers: { 'content-type': 'application/json' } }));
+  page.adapter.start();
+  await page.win.fetch('/upm/start?praId=bank-a'); await flush(); await flush();
+  page.state.feedback = [{ heading: '正确答案', answer: 'B' }];
+  assert.equal(page.adapter.getCurrentQuestion().answerStatus, 'confirmed');
+  const pending = new page.win.XMLHttpRequest();
+  pending.open('PUT', '/upm/bank-a/users/u1/answer');
+  pending.send(JSON.stringify({ answers: [{ quesId: 'q1', answer: ['a1'] }] }));
+  page.adapter.clearCache();
+  page.received.length = 0;
+  assert.equal(page.adapter.getCurrentQuestion().answerStatus, 'missing', '重置后裸DOM反馈不能继承旧缓存标准');
+  page.adapter.start();
+  const count = page.received.length;
+  pending.respond([{ answers: ['a2'] }]);
+  assert.equal(page.received.length, count, '重置前未完成的回执不得在重新采集后写回');
+  assert.equal(page.adapter.getCurrentQuestion().answerStatus, 'missing');
+  page.adapter.stop();
+});
+
 test('an older answer receipt cannot attach its answer to a newer same-id full snapshot', () => {
   const page = fakePage();
   page.adapter.start();