docs/reports/implementation/2026-03-31-lsfx-mock-server-abnormal-account-backend-implementation.md

@@ -73,6 +73,13 @@
 
 在 `all` 模式安全噪声测试中，原有用例只清空了旧规则维度，未同步清空新增的 `abnormal_account_hit_rules`。本次已将该测试夹具补齐，保证它继续只验证“月固定收入 + 安全噪声”的原始语义。
 
+在合并到 `dev` 后的运行态验证中，又发现 `getBSByLogId` 返回前统一回填主绑定时，会把异常账户样本原本正确的 `accountMaskNo` 覆盖成主账号，导致 HTTP 实际返回数据无法体现异常账户事实。对此补充了以下修正：
+
+- 新增回归用例 `test_get_bank_statement_should_preserve_abnormal_account_mask_no`
+- 将 `StatementService._apply_primary_binding(...)` 调整为只兜底缺失账号，不覆盖已有的异常账户样本账号
+
+修正后，接口返回中的异常账户流水可以保留各自独立的账号，与异常账户事实保持一致。
+
 ## 5. 结果
 
 异常账户命中计划、最小账户事实、样本生成器和服务层主链路均已落地，现有 Mock 服务可以为同一个 `logId` 稳定提供异常账户命中流水样本。

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

@@ -20,6 +20,21 @@ cd lsfx-mock-server
 python3 -m pytest tests/test_statement_service.py -v
 ```
 
+合并到 `dev` 后补充执行：
+
+```bash
+python3 -m pytest lsfx-mock-server/tests/test_statement_service.py::test_get_bank_statement_should_preserve_abnormal_account_mask_no -v
+python3 -m pytest lsfx-mock-server/tests/test_file_service.py lsfx-mock-server/tests/test_statement_service.py -v
+python3 main.py --rule-hit-mode all
+```
+
+启动服务后，使用标准库 `urllib` 调用了以下两个接口做运行态核验：
+
+```text
+POST /watson/api/project/getJZFileOrZjrcuFile
+POST /watson/api/project/getBSByLogId
+```
+
 ## 2. 验证结果摘要
 
 - `tests/test_file_service.py::test_fetch_inner_flow_should_attach_abnormal_account_rule_plan`：通过
@@ -28,12 +43,30 @@ python3 -m pytest tests/test_statement_service.py -v
 - `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`
+- `python3 -m pytest lsfx-mock-server/tests/test_statement_service.py::test_get_bank_statement_should_preserve_abnormal_account_mask_no -v`：通过
+- `python3 -m pytest lsfx-mock-server/tests/test_file_service.py lsfx-mock-server/tests/test_statement_service.py -v`：`44 passed`
+
+运行态 HTTP 验证结果：
+
+- `logId=16724`
+- 返回流水总数：`200`
+- `SUDDEN_ACCOUNT_CLOSURE` 命中样本：`3` 条
+- `DORMANT_ACCOUNT_LARGE_ACTIVATION` 命中样本：`3` 条
+- 销户规则账号：`6222006485425901`
+  日期：`2026-02-18`、`2026-03-07`、`2026-03-18`
+  结论：全部落在销户日前 30 天窗口内
+- 休眠激活规则账号：`6222004693652802`
+  日期：`2025-07-01`、`2025-07-10`、`2025-07-19`
+  累计金额：`560000.0`
+  单笔最大金额：`260000.0`
+  结论：满足开户满 6 个月后激活、累计金额阈值和单笔最大金额阈值
 
 ## 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
+- 合并到 `dev` 后的 HTTP 验证又发现 `getBSByLogId` 返回前会覆盖异常账户样本账号，已通过新增回归用例与最小实现修正
 
 ## 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。
+本轮验证过程中临时启动了 `lsfx-mock-server` 的 `python3 main.py --rule-hit-mode all` 进程，验证完成后已主动停止，无残留端口占用。

lsfx-mock-server/services/statement_service.py

@@ -216,7 +216,7 @@ class StatementService:
         """将解析出的主绑定统一回填到已有流水记录。"""
         for statement in statements:
             statement["leName"] = primary_enterprise_name
-            statement["accountMaskNo"] = primary_account_no
+            statement["accountMaskNo"] = statement.get("accountMaskNo") or primary_account_no
 
     def get_bank_statement(self, request: Union[Dict, object]) -> Dict:
         """获取银行流水列表。"""

lsfx-mock-server/tests/test_statement_service.py

@@ -311,6 +311,66 @@ def test_generate_statements_should_follow_abnormal_account_rule_plan_from_file_
     assert any("销户" in item["userMemo"] or "异常账户" in item["userMemo"] for item in statements)
 
 
+def test_get_bank_statement_should_preserve_abnormal_account_mask_no():
+    file_service = FileService(staff_identity_repository=FakeStaffIdentityRepository())
+    statement_service = StatementService(file_service=file_service)
+
+    response = file_service.fetch_inner_flow(
+        {
+            "groupId": 1001,
+            "customerNo": "customer_abnormal_api",
+            "dataChannelCode": "test_code",
+            "requestDateId": 20240101,
+            "dataStartDateId": 20240101,
+            "dataEndDateId": 20240131,
+            "uploadUserId": 902001,
+        }
+    )
+    log_id = response["data"][0]
+    record = file_service.file_records[log_id]
+    record.abnormal_account_hit_rules = [
+        "SUDDEN_ACCOUNT_CLOSURE",
+        "DORMANT_ACCOUNT_LARGE_ACTIVATION",
+    ]
+    record.abnormal_accounts = [
+        {
+            "account_no": "6222000000000001",
+            "owner_id_card": record.staff_id_card,
+            "account_name": "测试员工工资卡",
+            "status": 2,
+            "effective_date": "2024-01-01",
+            "invalid_date": "2026-03-20",
+            "rule_code": "SUDDEN_ACCOUNT_CLOSURE",
+        },
+        {
+            "account_no": "6222000000000002",
+            "owner_id_card": record.staff_id_card,
+            "account_name": "测试员工工资卡",
+            "status": 1,
+            "effective_date": "2025-01-01",
+            "invalid_date": None,
+            "rule_code": "DORMANT_ACCOUNT_LARGE_ACTIVATION",
+        },
+    ]
+
+    response = statement_service.get_bank_statement(
+        {
+            "groupId": 1001,
+            "logId": log_id,
+            "pageNow": 1,
+            "pageSize": 500,
+        }
+    )
+    statements = response["data"]["bankStatementList"]
+    abnormal_statements = [
+        item for item in statements if "销户" in item["userMemo"] or "激活" in item["userMemo"]
+    ]
+
+    assert abnormal_statements
+    assert any(item["accountMaskNo"] == "6222000000000001" for item in abnormal_statements)
+    assert any(item["accountMaskNo"] == "6222000000000002" for item in abnormal_statements)
+
+
 def test_generate_statements_should_stay_within_single_employee_scope_per_log_id():
     """同一 logId 的流水只能落在 FileRecord 绑定的员工及亲属身份证内。"""
     file_service = FileService(staff_identity_repository=FakeStaffIdentityRepository())