fix: 已删除设备残留失败记录不再出现在异常汇总

- _merge_status 清理不在 STF 设备池且无运行 worker 的陈旧状态
- /api/summary 按当前设备池过滤，STF 异常时不隐藏任何记录

core/task_manager.py

@@ -723,6 +723,16 @@ class TaskManager:
         worker_status = {w["serial"]: w for w in get_all_worker_status()}
         running = self.get_running()
 
+        # 清理陈旧状态：serial 已不在 STF 设备池、且没有在跑 worker 的条目，
+        # 避免设备被删除后其失败记录仍残留在"异常汇总"里
+        present = {dev.get("serial", "") for dev in all_devices}
+        for serial, w in list(worker_status.items()):
+            if serial in present or serial in running:
+                continue
+            if w.get("status") in ("running", "connecting"):
+                continue
+            _remove_worker(serial)
+
         result = []
         for dev in all_devices:
             serial = dev.get("serial", "")