refactor: 复用持久设备工作线程 (#110)

client/src/collect_task_service.py

@@ -13,7 +13,10 @@ from .admin_gateway import (
     ClientInfo,
 )
 from .pdd_collect_service import PddCollectError, PddCollectService
-from .pdd_device_service import PddDeviceService
+from .pdd_device_service import (
+    PddDeviceService,
+    current_thread_device_service,
+)
 from .db import data_dir
 from .task_models import OutboxEventRecord, OutboxEventType, TaskStatus, TaskType
 from .task_models import NewClaimedTask
@@ -258,7 +261,7 @@ class CollectTaskService:
         cancelled: Callable[[], bool],
     ) -> PddCollectService:
         return PddCollectService(
-            PddDeviceService(),
+            current_thread_device_service() or PddDeviceService(),
             device_address,
             client_id,
             cancelled=cancelled,