feat: 验收任务周期采集与设备资源接口

- 新增 acceptance-tasks 周期采集、立即采集、断点续采与批次管理
- acceptance-resources 返回 xhs_device_accounts 真实设备清单
- 数据看板服务调整及测试更新

tests/test_ocr_dashboard_service.py

@@ -1,7 +1,7 @@
 import unittest
 from unittest.mock import Mock, patch
 
-from ocr_dashboard_service import export_evidences, get_summary, list_batches, list_results
+from ocr_dashboard_service import export_evidences, get_comparison, get_summary, list_batches, list_results
 from task_service import TaskError
 
 
@@ -21,6 +21,23 @@ class OcrDashboardServiceTest(unittest.TestCase):
         get_summary("b1", "c1")
         self.assertEqual(get.call_args.kwargs["params"], {"batch_key": "b1", "collection_key": "c1"})
 
+    @patch("ocr_dashboard_service.SESSION.get")
+    def test_comparison_forwards_scope(self, get):
+        response = Mock()
+        response.json.return_value = {
+            "success": True, "code": 200,
+            "data": {"current": {}, "previous": {}},
+        }
+        get.return_value = response
+
+        result = get_comparison("b1", "c1")
+
+        self.assertIn("current", result)
+        self.assertEqual(
+            get.call_args.kwargs["params"],
+            {"batch_key": "b1", "collection_key": "c1"},
+        )
+
     def test_results_rejects_oversized_page(self):
         with self.assertRaises(TaskError):
             list_results({"page_size": "201"})