Normalize data agent records output path

tests/test_data_agent_records.py

@@ -571,16 +571,48 @@ target: Agent(tag="life_service")
             export_result = execute_tool(
                 registry,
                 'data_agent_export_dataset_records',
-                {'records': records, 'output_path': 'output/demo/records.jsonl'},
+                {'records': records, 'output_path': 'output/地图和生活边界数据/自定义名字.jsonl'},
                 context,
             )
             self.assertTrue(export_result.ok, export_result.content)
             export_payload = json.loads(export_result.content)
 
-        expected = '.port_sessions/accounts/alice/sessions/s1/output/demo/records.jsonl'
+        expected = '.port_sessions/accounts/alice/sessions/s1/output/records.jsonl'
         self.assertEqual(plan_payload['plan']['output_path'], expected)
         self.assertEqual(export_payload['output_path'], expected)
 
+    def test_data_agent_session_records_path_stays_stable_when_file_exists(self) -> None:
+        with tempfile.TemporaryDirectory() as tmp_dir:
+            root = Path(tmp_dir)
+            scratchpad = root / '.port_sessions' / 'accounts' / 'alice' / 'sessions' / 's1' / 'scratchpad'
+            output_root = scratchpad.parent / 'output'
+            output_root.mkdir(parents=True)
+            (output_root / 'records.jsonl').write_text('{}\n', encoding='utf-8')
+            context = build_tool_context(AgentRuntimeConfig(cwd=root), scratchpad_directory=scratchpad)
+
+            plan_result = execute_tool(
+                default_tool_registry(),
+                'data_agent_prepare_generation_plan',
+                {
+                    'direct_review': True,
+                    'dataset_label': '地图和生活边界数据',
+                    'target': 'Agent(tag="life_service")',
+                    'total_count': 1,
+                    'turn_mix': '1 条单轮',
+                    'coverage': '附近吃喝玩乐',
+                    'exclusions': '不要生成导航路线类 query',
+                    'output_path': 'output/任意子目录/任意名字.jsonl',
+                },
+                context,
+            )
+            self.assertTrue(plan_result.ok, plan_result.content)
+            plan_payload = json.loads(plan_result.content)
+
+        self.assertEqual(
+            plan_payload['plan']['output_path'],
+            '.port_sessions/accounts/alice/sessions/s1/output/records.jsonl',
+        )
+
 
 if __name__ == '__main__':
     unittest.main()