完成异常账户Mock服务后端实施记录

docs/tests/records/2026-03-31-lsfx-mock-server-abnormal-account-backend-verification.md

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+# LSFX Mock Server 异常账户后端验证记录
+
+## 1. 验证命令
+
+按实施过程实际执行了以下命令：
+
+```bash
+cd lsfx-mock-server
+python3 -m pytest tests/test_file_service.py::test_fetch_inner_flow_should_attach_abnormal_account_rule_plan -v
+python3 -m pytest tests/test_statement_service.py -k "sudden_account_closure or dormant_account_large_activation" -v
+python3 -m pytest tests/test_statement_service.py::test_generate_statements_should_follow_abnormal_account_rule_plan_from_file_record -v
+python3 -m pytest tests/test_file_service.py tests/test_statement_service.py -v
+python3 -m pytest tests/ -v
+```
+
+README 补充后按计划追加执行：
+
+```bash
+cd lsfx-mock-server
+python3 -m pytest tests/test_statement_service.py -v
+```
+
+## 2. 验证结果摘要
+
+- `tests/test_file_service.py::test_fetch_inner_flow_should_attach_abnormal_account_rule_plan`：通过
+- `tests/test_statement_service.py -k "sudden_account_closure or dormant_account_large_activation"`：通过
+- `tests/test_statement_service.py::test_generate_statements_should_follow_abnormal_account_rule_plan_from_file_record`：通过
+- `python3 -m pytest tests/test_file_service.py tests/test_statement_service.py -v`：`43 passed`
+- `python3 -m pytest tests/ -v`：`84 passed`
+- `python3 -m pytest tests/test_statement_service.py -v`：`26 passed`
+
+## 3. 过程说明
+
+- 回归期间发现 `all` 模式安全噪声测试未同步清空新增的异常账户规则维度，导致异常账户样本被计入噪声断言
+- 已通过补齐测试夹具方式修正，随后重新执行聚焦回归和全量回归，结果均通过
+
+## 4. 进程清理
+
+本轮只执行了 `pytest` 命令，未启动额外前端、后端或 Mock 服务进程，因此无需清理残留进程。