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

ocr_dashboard_service.py

@@ -52,6 +52,12 @@ def get_summary(batch_key: str = "", collection_key: str = "") -> dict[str, Any]
     }) or {}
 
 
+def get_comparison(batch_key: str = "", collection_key: str = "") -> dict[str, Any]:
+    return _get("/xhs/ocr/dashboard/comparison", {
+        "batch_key": batch_key, "collection_key": collection_key,
+    }) or {}
+
+
 def list_results(params: dict[str, Any]) -> dict[str, Any]:
     allowed = {
         "batch_key", "collection_key", "question_code", "search_keyword", "city",