refactor(test): move Chinese test metadata into function docstring

用例 docstring now contains structured metadata fields:
  用例ID / 用例名称 / 优先级 / 标签

_report_cn uses regex to extract 用例名称 first, then falls back
to display_name and docstring first line.

tests/cross_end/tests/test_driver_to_settlement.py

@@ -57,7 +57,15 @@ class TestDriverToSettlement:
         cross_end_context,
         logger,
     ):
-        """【P0】司机APP接单到管理端核算打款完整流程"""
+
+        """
+        用例ID: TC-D2S-001
+        用例名称: 司机APP接单到管理端核算打款完整流程
+        优先级: P0
+        标签: cross_end, smoke
+
+        验证从司机 APP 接单到管理端核算打款的完整跨端业务流程。
+        """
 
         logger.info("=" * 60)
         logger.info("跨端 E2E: 司机APP → 管理端核算打款 完整流程开始")