feat: 按任务管理比特浏览器临时窗口

tests/concurrent_runner_resilience.test.js

@@ -97,6 +97,26 @@ function yieldEventLoop() {
   assert.strictEqual(deferredBatch.completed, 3, '延迟重试不应重复累计完成进度');
   assert.strictEqual(deferredBatch.results[0].attempt, 2, '延迟项目到期后应在原索引写入最终结果');
 
+  const heldSlotRuns = [];
+  const heldSlotAttempts = new Map();
+  const heldSlotBatch = await runConcurrentItems(['sleeping', 'next'], async item => {
+    heldSlotRuns.push(item);
+    const attempt = (heldSlotAttempts.get(item) || 0) + 1;
+    heldSlotAttempts.set(item, attempt);
+    if (item === 'sleeping' && attempt === 1) return { defer: true, delayMs: 20 };
+    return { item, attempt };
+  }, {
+    concurrency: 1,
+    deferReleasesSlot: false,
+    getDeferDelay: result => (result && result.defer ? result.delayMs : 0),
+  });
+  assert.deepStrictEqual(
+    heldSlotRuns,
+    ['sleeping', 'sleeping', 'next'],
+    '临时比特浏览器任务延迟等待时必须占住串行槽，删除后才能轮到下一账号',
+  );
+  assert.strictEqual(heldSlotBatch.completed, 2, '占住串行槽时仍应完成全部项目');
+
   console.log('concurrent_runner_resilience.test.js: PASS');
 })().catch(error => {
   console.error(error);