diff --git a/.superpowers/sdd/2026-09-22-test-data-batch-cleanup/task-5-report.md b/.superpowers/sdd/2026-09-22-test-data-batch-cleanup/task-5-report.md
new file mode 100644
index 0000000..c0b268e
--- /dev/null
+++ b/.superpowers/sdd/2026-09-22-test-data-batch-cleanup/task-5-report.md
@@ -0,0 +1,134 @@
+# Task 5 交接报告
+
+## Status
+
+INCOMPLETE。当前尝试未完成 Task 5，未提交 commit。
+
+## 已修改文件
+
+本次 Task 5 尝试涉及 brief 白名单中的 18 个文件：
+
+- `shierfeng-fastapi-backend/module_business/controller/inbound_controller.py`
+- `shierfeng-fastapi-backend/module_business/controller/filling_controller.py`
+- `shierfeng-fastapi-backend/module_business/controller/shipment_controller.py`
+- `shierfeng-fastapi-backend/module_business/controller/usage_controller.py`
+- `shierfeng-fastapi-backend/module_business/controller/return_controller.py`
+- `shierfeng-fastapi-backend/module_business/dao/operation_dao.py`
+- `shierfeng-fastapi-backend/module_business/dao/inventory_dao.py`
+- `shierfeng-fastapi-backend/module_business/service/inbound_service.py`
+- `shierfeng-fastapi-backend/module_business/service/filling_service.py`
+- `shierfeng-fastapi-backend/module_business/service/shipment_service.py`
+- `shierfeng-fastapi-backend/module_business/service/usage_service.py`
+- `shierfeng-fastapi-backend/module_business/service/return_service.py`
+- `shierfeng-fastapi-backend/tests/module_business/test_inbound_service.py`
+- `shierfeng-fastapi-backend/tests/module_business/test_filling_service.py`
+- `shierfeng-fastapi-backend/tests/module_business/test_shipment_service.py`
+- `shierfeng-fastapi-backend/tests/module_business/test_usage_service.py`
+- `shierfeng-fastapi-backend/tests/module_business/test_return_service.py`
+- `shierfeng-fastapi-backend/tests/module_business/test_inventory_dao.py`
+
+## RED 证据
+
+初始聚焦命令运行五类业务 service 与 inventory DAO 测试，共 282 个测试，结果为 `38 failures`。该 RED 结果用于确认显式 scope 契约、批次锁首语句、派生记录继承和 DAO scope 隔离的缺口。
+
+## 阶段性结果
+
+随后按单文件继续迁移测试调用和断言，当前结果为：
+
+- `test_inbound_service`：55 tests，`24 failures / 9 errors`
+- `test_return_service`：46 tests，`16 failures / 9 errors`
+- `test_inventory_dao`：42 tests，`16 failures / 17 errors`
+
+失败根因主要是既有测试中的旧 service/DAO 调用、旧参数顺序和旧 `assert_awaited_*` 断言尚未完成显式 scope 迁移；同时仍存在真实的跨 scope 校验、测试写入批次锁顺序、既有库存 ownership 保持和相关回滚行为需要继续实现与验证。生产接口当前保持 scope 必填，没有增加默认 formal scope。
+
+## 未完成项
+
+- 尚未使六个目标测试文件逐组 GREEN。
+- 尚未完成五条业务链路的完整跨 scope、批次锁首语句、派生 `test_batch_id` 和既有库存 ownership 验证。
+- 尚未运行 brief 要求的完整 282+ 回归测试。
+- 尚未运行最终 Ruff format/check 和 diff check。
+- 尚未执行精确白名单 `git commit --only`，当前没有可提交 SHA。
+
+## 交接结论
+
+这是 INCOMPLETE 交接，不代表 Task 5 完成。后续应从测试调用/断言迁移继续，修复每个单文件的真实 scope 与锁顺序失败，完成全套验证后再生成正式提交和最终报告。
+
+## Task 5 最终结果（2026-09-23）
+
+### Status
+
+DONE。18 个白名单文件的 Task 5 实现、测试 scope 迁移和格式修复已完成；未提交 commit。生产代码保留显式 scope 必填，没有添加 formal 默认值；测试/生产数据中 `test_batch_id=NULL` 仍表示正式数据。
+
+### 本轮完成
+
+- 完成 `test_return_service.py` 的旧 DAO 调用、内部 helper 调用和 mock 断言迁移，补齐显式 `TestBatchScope`。
+- 完成 `test_inventory_dao.py` 的 DAO 签名期望、列表参数顺序、幂等查询、详情/锁查询和写入调用迁移。
+- 对 5 个控制器和 6 个业务测试文件执行白名单范围内的 Ruff 导入/格式修复；未修改白名单之外的源码、测试、日志或 pycache。
+- 复核生产实现：DAO 根查询及明细查询应用 `batch_scope_condition`；测试写入口首条数据库语句锁定 active batch；派生订单、明细和事件显式继承 `test_batch_id`；已有库存未被改写 ownership；入库/发货旧 DELETE 在访问 DAO 前固定抛出批次清理提示；授权、状态机、幂等、锁顺序和回滚回归通过。
+
+### 验证命令与真实结果
+
+1. `PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_inbound_service`：`Ran 55 tests ... OK`。
+2. `PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_filling_service`：`Ran 42 tests ... OK`。
+3. `PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_shipment_service`：`Ran 46 tests ... OK`。
+4. `PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_usage_service`：`Ran 51 tests ... OK`。
+5. `PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_return_service`：`Ran 46 tests ... OK`。
+6. `PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_inventory_dao`：`Ran 42 tests ... OK`。
+7. 六文件合并命令：`PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_inbound_service tests.module_business.test_filling_service tests.module_business.test_shipment_service tests.module_business.test_usage_service tests.module_business.test_return_service tests.module_business.test_inventory_dao -v`：`Ran 282 tests ... OK`。
+8. 白名单 `ruff format --check`：`18 files already formatted`，exit 0。
+9. 白名单 `ruff check`：`All checks passed!`，exit 0。
+10. 目录级 `ruff check module_business/controller module_business/dao module_business/service tests/module_business`：`All checks passed!`，exit 0。
+11. 白名单范围 `git diff --check -- <18 files>`：无输出，exit 0。
+12. 全仓 `git diff --check`：exit 2；首个实际根因为用户已有 `shierfeng-fastapi-backend/logs/2026/09/20/info.log` 的 trailing whitespace，未修改日志。
+
+### Concerns
+
+- 目录级 `ruff format --check module_business/controller module_business/dao module_business/service tests/module_business` 仍 exit 1，精确列出 4 个非白名单文件：`module_business/dao/test_batch_dao.py`、`module_business/service/test_batch_service.py`、`tests/module_business/test_sql_contract.py`、`tests/module_business/test_test_batch_service.py`。受本任务 18 文件白名单约束，未修改。
+- 全仓 `git diff --check` 仍被用户已有日志 trailing whitespace 阻断；Task 5 白名单范围检查已通过。
+
+## 停止长任务交接（2026-09-23）
+
+本次停止请求已立即停止后续工作；当前没有仍在运行的测试或命令，没有回滚工作区改动，也未提交 commit。
+
+本次停止请求本身未启动新命令，因此没有新增命令输出。停止前最近一次真实验证结果保持不变：六个单文件测试分别为 `55/55`、`42/42`、`46/46`、`51/51`、`46/46`、`42/42`，合并回归为 `Ran 282 tests ... OK`；白名单 Ruff format/check 和白名单 `git diff --check` 均 exit 0。
+
+剩余阻塞/concerns：
+
+- 目录级 Ruff format 仍因 4 个非白名单文件未格式化而 exit 1：`module_business/dao/test_batch_dao.py`、`module_business/service/test_batch_service.py`、`tests/module_business/test_sql_contract.py`、`tests/module_business/test_test_batch_service.py`。
+- 全仓 `git diff --check` 仍因用户已有 `shierfeng-fastapi-backend/logs/2026/09/20/info.log` trailing whitespace 而 exit 2；未修改该日志。
+
+## Task 5 Fix Round 1（2026-09-23）
+
+### Status
+
+DONE_WITH_CONCERNS。review 指出的生产缺陷已修复，并创建了退回申请 `IntegrityError` 入口回归和事件历史指针 scope SQL 回归；未执行真实数据库写入或迁移。
+
+### 修复内容
+
+- `ReturnService.request_return_services` 现在向 `_recover_request_integrity_error` 传入 `test_scope`；入口回归通过真实恢复分支验证同一 TEST batch 的幂等赢家稳定返回。
+- 六个 `IntegrityError` recovery helper 在任何授权或业务查询前调用 `lock_active_batch`；退回申请的 site 重授权 helper 不再在 site 行锁后锁 batch。退回申请、确认及使用在预读 rollback 后开始的新事务也先重锁 batch。
+- `InventoryDao.add_event` 现在强制接收 `scope`，历史 `last_event_id` 查询加入 `batch_scope_condition(BizPalletEvent.test_batch_id, scope)`；五个服务的全部事件写入调用均传递当前 scope。
+- 入库和发货 DELETE OpenAPI summary/description 更新为固定拒绝消息：`不支持单条物理删除，请通过测试数据批次清理`。
+- 业务测试中的事件 DAO 替身更新为四参 API。
+
+### TDD 与验证命令（真实输出摘要）
+
+1. RED：`cd shierfeng-fastapi-backend && PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_return_service.ReturnRequestTransactionRedTest.test_request_integrity_error_recovers_same_test_batch_idempotently -v`：exit 1，`TypeError: ReturnService._recover_request_integrity_error() missing 1 required positional argument: 'test_scope'`。
+2. RED：`cd shierfeng-fastapi-backend && PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_inventory_dao.TestDaoPublicContract.test_inventory_dao_critical_parameter_names_are_stable tests.module_business.test_inventory_dao.TestInventoryDao.test_add_event_reads_exact_previous_pointer_and_updates_inventory -v`：exit 1，`add_event` 缺少 `scope` 参数，调用报 `takes 4 positional arguments but 5 were given`。
+3. GREEN：上述退回入口单测：`Ran 1 test in 0.023s`，`OK`。
+4. GREEN：`TestDaoPublicContract.test_inventory_dao_critical_parameter_names_are_stable` 及三个 `add_event` DAO 单测：`Ran 4 tests in 0.021s`，`OK`。
+5. 单文件：`PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_inbound_service -v`：`Ran 55 tests ... OK`。
+6. 单文件：`PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_filling_service -v`：`Ran 42 tests ... OK`。
+7. 单文件：`PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_shipment_service -v`：`Ran 46 tests ... OK`。
+8. 单文件：`PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_usage_service -v`：`Ran 51 tests ... OK`。
+9. 单文件：`PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_return_service -v`：`Ran 47 tests ... OK`。
+10. 单文件：`PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_inventory_dao -v`：`Ran 42 tests ... OK`。
+11. 合并：`PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m unittest tests.module_business.test_inbound_service tests.module_business.test_filling_service tests.module_business.test_shipment_service tests.module_business.test_usage_service tests.module_business.test_return_service tests.module_business.test_inventory_dao -v`：`Ran 283 tests in 1.761s`，`OK`。计数为 283 是本轮新增退回恢复回归的结果。
+12. `PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m ruff format --check <18 个白名单文件>`：`18 files already formatted`，exit 0。
+13. `PYTHONDONTWRITEBYTECODE=1 conda run -n ShiErFeng python -m ruff check <18 个白名单文件>`：`All checks passed!`，exit 0。
+14. `git diff --check -- <18 个白名单文件及本报告>`：无输出，exit 0（在追加本段前执行；追加后会在提交前重新执行）。
+
+### Concerns
+
+- 本轮新增的 TEST scope 入口成功回归目前集中于退回申请；入库、装填、发货和使用的既有业务成功回归仍以 `TestBatchScope.formal()` 为主。生产路径、DAO SQL scope 条件和六文件回归均已验证，但尚未为这四条链路分别补齐 TEST batch 成功、跨批次拒绝、CLOSED 拒绝、派生字段和 rollback 的专门用例。
+- 目录级 Ruff format 和全仓 `git diff --check` 的既有非白名单阻塞仍按上文保留，未修改用户文件。
diff --git a/shierfeng-fastapi-backend/module_business/controller/inbound_controller.py b/shierfeng-fastapi-backend/module_business/controller/inbound_controller.py
index ab4dee6..0920af2 100644
--- a/shierfeng-fastapi-backend/module_business/controller/inbound_controller.py
+++ b/shierfeng-fastapi-backend/module_business/controller/inbound_controller.py
@@ -160,8 +160,8 @@ async def edit_business_inbound(
 
 @inbound_controller.delete(
     '/{inbound_ids}',
-    summary='删除首次入库草稿接口',
-    description='原子删除一个或多个尚未确认的首次入库草稿',
+    summary='不支持单条物理删除，请通过测试数据批次清理',
+    description='不支持单条物理删除，请通过测试数据批次清理',
     response_model=ResponseBaseModel,
     dependencies=[UserInterfaceAuthDependency('business:inbound:remove')],
 )
diff --git a/shierfeng-fastapi-backend/module_business/controller/shipment_controller.py b/shierfeng-fastapi-backend/module_business/controller/shipment_controller.py
index 147ba3e..e9add7a 100644
--- a/shierfeng-fastapi-backend/module_business/controller/shipment_controller.py
+++ b/shierfeng-fastapi-backend/module_business/controller/shipment_controller.py
@@ -177,8 +177,8 @@ async def edit_business_shipment(
 
 @shipment_controller.delete(
     '/{shipment_ids}',
-    summary='删除整托发货草稿接口',
-    description='原子删除一个或多个尚未确认的整托发货草稿',
+    summary='不支持单条物理删除，请通过测试数据批次清理',
+    description='不支持单条物理删除，请通过测试数据批次清理',
     response_model=ResponseBaseModel,
     dependencies=[UserInterfaceAuthDependency('business:shipment:remove')],
 )
diff --git a/shierfeng-fastapi-backend/module_business/dao/inventory_dao.py b/shierfeng-fastapi-backend/module_business/dao/inventory_dao.py
index ede5462..10e607a 100644
--- a/shierfeng-fastapi-backend/module_business/dao/inventory_dao.py
+++ b/shierfeng-fastapi-backend/module_business/dao/inventory_dao.py
@@ -112,6 +112,7 @@ class InventoryDao:
         db: AsyncSession,
         inventory: BizPalletInventory,
         event: BizPalletEvent,
+        scope: TestBatchScope,
     ) -> BizPalletEvent:
         """在调用方持有库存行锁时，为托盘追加下一序号事件。"""
         last_sequence = 0
@@ -121,6 +122,7 @@ class InventoryDao:
                 .where(
                     BizPalletEvent.event_id == inventory.last_event_id,
                     BizPalletEvent.pallet_id == inventory.pallet_id,
+                    batch_scope_condition(BizPalletEvent.test_batch_id, scope),
                 )
                 .with_for_update()
             )
diff --git a/shierfeng-fastapi-backend/module_business/service/filling_service.py b/shierfeng-fastapi-backend/module_business/service/filling_service.py
index 0a991f0..db0088d 100644
--- a/shierfeng-fastapi-backend/module_business/service/filling_service.py
+++ b/shierfeng-fastapi-backend/module_business/service/filling_service.py
@@ -304,6 +304,7 @@ class FillingService:
         test_scope: TestBatchScope,
     ) -> CrudResponseModel:
         try:
+            await TestBatchAccessService.lock_active_batch(query_db, test_scope)
             warehouse_ids = await cls._warehouse_scope(query_db, current_user)
             if warehouse_ids is not None and page_object.warehouse_id not in warehouse_ids:
                 raise PermissionException(data='', message='无权访问该仓库')
@@ -509,7 +510,7 @@ class FillingService:
                 request_hash=request_hash,
                 test_batch_id=test_scope.batch_id,
             )
-            await InventoryDao.add_event(query_db, inventory, event)
+            await InventoryDao.add_event(query_db, inventory, event, test_scope)
             await query_db.commit()
             return cls._success(filling_id)
         except IntegrityError:
diff --git a/shierfeng-fastapi-backend/module_business/service/inbound_service.py b/shierfeng-fastapi-backend/module_business/service/inbound_service.py
index 3f08e92..bcb5ae0 100644
--- a/shierfeng-fastapi-backend/module_business/service/inbound_service.py
+++ b/shierfeng-fastapi-backend/module_business/service/inbound_service.py
@@ -502,6 +502,7 @@ class InboundService:
         test_scope: TestBatchScope,
     ) -> CrudResponseModel:
         try:
+            await TestBatchAccessService.lock_active_batch(query_db, test_scope)
             warehouse_ids = await cls._warehouse_scope(query_db, current_user)
             current = await OperationDao.get_inbound_by_id(
                 query_db,
@@ -694,7 +695,7 @@ class InboundService:
                     request_hash=request_hash,
                     test_batch_id=test_scope.batch_id,
                 )
-                await InventoryDao.add_event(query_db, inventory, event)
+                await InventoryDao.add_event(query_db, inventory, event, test_scope)
 
             await query_db.commit()
             return cls._success('确认成功')
diff --git a/shierfeng-fastapi-backend/module_business/service/return_service.py b/shierfeng-fastapi-backend/module_business/service/return_service.py
index 4643b5e..561d9b2 100644
--- a/shierfeng-fastapi-backend/module_business/service/return_service.py
+++ b/shierfeng-fastapi-backend/module_business/service/return_service.py
@@ -585,7 +585,6 @@ class ReturnService:
     ) -> None:
         site = await MasterDao.get_site(query_db, return_order.source_site_id, test_scope, for_update=True)
         try:
-            await TestBatchAccessService.lock_active_batch(query_db, test_scope)
             await AccessService.assert_site_access(
                 query_db,
                 current_user,
@@ -607,6 +606,7 @@ class ReturnService:
         test_scope: TestBatchScope,
     ) -> CrudResponseModel:
         try:
+            await TestBatchAccessService.lock_active_batch(query_db, test_scope)
             site_ids = await cls._site_scope(query_db, current_user)
             request_warehouse_ids = None if site_ids is None else []
             recovered = None
@@ -678,6 +678,7 @@ class ReturnService:
             preflight_existing_id = int(existing.return_id) if existing is not None else None
 
             await query_db.rollback()
+            await TestBatchAccessService.lock_active_batch(query_db, test_scope)
             if preflight_existing_id is not None:
                 locked_existing = await OperationDao.get_return_for_update(
                     query_db,
@@ -802,7 +803,7 @@ class ReturnService:
                     request_hash=request_hash,
                     test_batch_id=test_scope.batch_id,
                 )
-                await InventoryDao.add_event(query_db, inventory, event)
+                await InventoryDao.add_event(query_db, inventory, event, test_scope)
 
             await query_db.commit()
             return cls._success('申请成功', return_id)
@@ -813,6 +814,7 @@ class ReturnService:
                 page_object,
                 cls._build_request_hash(page_object),
                 current_user,
+                test_scope,
             )
         except Exception:
             await query_db.rollback()
@@ -941,6 +943,7 @@ class ReturnService:
         test_scope: TestBatchScope,
     ) -> CrudResponseModel:
         try:
+            await TestBatchAccessService.lock_active_batch(query_db, test_scope)
             warehouse_ids = await cls._warehouse_scope(query_db, current_user)
             confirm_site_ids = None if warehouse_ids is None else []
             route = await OperationDao.get_return_by_id(
@@ -1040,6 +1043,7 @@ class ReturnService:
                 raise ServiceException(message='确认退回失败，幂等键已被其他请求使用')
 
             await query_db.rollback()
+            await TestBatchAccessService.lock_active_batch(query_db, test_scope)
             locked = await OperationDao.get_return_for_update(
                 query_db,
                 return_id,
@@ -1146,7 +1150,7 @@ class ReturnService:
                     request_hash=request_hash,
                     test_batch_id=test_scope.batch_id,
                 )
-                await InventoryDao.add_event(query_db, inventory, event)
+                await InventoryDao.add_event(query_db, inventory, event, test_scope)
 
             await query_db.commit()
             return cls._success('确认成功', return_id)
diff --git a/shierfeng-fastapi-backend/module_business/service/shipment_service.py b/shierfeng-fastapi-backend/module_business/service/shipment_service.py
index 4c99e6a..e798d9d 100644
--- a/shierfeng-fastapi-backend/module_business/service/shipment_service.py
+++ b/shierfeng-fastapi-backend/module_business/service/shipment_service.py
@@ -738,6 +738,7 @@ class ShipmentService:
         test_scope: TestBatchScope,
     ) -> CrudResponseModel:
         try:
+            await TestBatchAccessService.lock_active_batch(query_db, test_scope)
             warehouse_ids, site_ids = await cls._scopes(query_db, current_user)
             current = await OperationDao.get_shipment_by_id(
                 query_db,
@@ -932,7 +933,7 @@ class ShipmentService:
                     request_hash=request_hash,
                     test_batch_id=test_scope.batch_id,
                 )
-                await InventoryDao.add_event(query_db, inventory, event)
+                await InventoryDao.add_event(query_db, inventory, event, test_scope)
 
             await query_db.commit()
             return cls._success('确认成功')
diff --git a/shierfeng-fastapi-backend/module_business/service/usage_service.py b/shierfeng-fastapi-backend/module_business/service/usage_service.py
index f38f730..8ae8dd6 100644
--- a/shierfeng-fastapi-backend/module_business/service/usage_service.py
+++ b/shierfeng-fastapi-backend/module_business/service/usage_service.py
@@ -177,6 +177,7 @@ class UsageService:
         test_scope: TestBatchScope,
     ) -> CrudResponseModel:
         try:
+            await TestBatchAccessService.lock_active_batch(query_db, test_scope)
             site_ids = await cls._site_scope(query_db, current_user)
             if site_ids is not None and expected_site_id not in site_ids:
                 cls._raise_pallet_not_accessible(current_user)
@@ -403,6 +404,7 @@ class UsageService:
                 cls._raise_pallet_not_accessible(current_user)
             scanned_pallet_id = int(scanned_pallet.pallet_id)
             await query_db.rollback()
+            await TestBatchAccessService.lock_active_batch(query_db, test_scope)
 
             inventory = await InventoryDao.get_inventory_for_update(
                 query_db,
@@ -579,7 +581,7 @@ class UsageService:
                 request_hash=request_hash,
                 test_batch_id=test_scope.batch_id,
             )
-            await InventoryDao.add_event(query_db, inventory, event)
+            await InventoryDao.add_event(query_db, inventory, event, test_scope)
             await query_db.commit()
             return result
         except IntegrityError:
diff --git a/shierfeng-fastapi-backend/tests/module_business/test_filling_service.py b/shierfeng-fastapi-backend/tests/module_business/test_filling_service.py
index 380a1cc..1ff45b6 100644
--- a/shierfeng-fastapi-backend/tests/module_business/test_filling_service.py
+++ b/shierfeng-fastapi-backend/tests/module_business/test_filling_service.py
@@ -446,6 +446,7 @@ class TestFillPalletService(unittest.IsolatedAsyncioTestCase):
             _db: AsyncSession,
             inventory: BizPalletInventory,
             event: BizPalletEvent,
+            _scope: TestBatchScope,
         ) -> BizPalletEvent:
             actions.append('event-flush')
             event.event_id = 91
diff --git a/shierfeng-fastapi-backend/tests/module_business/test_inbound_service.py b/shierfeng-fastapi-backend/tests/module_business/test_inbound_service.py
index 5a0c79c..d10b31f 100644
--- a/shierfeng-fastapi-backend/tests/module_business/test_inbound_service.py
+++ b/shierfeng-fastapi-backend/tests/module_business/test_inbound_service.py
@@ -1092,6 +1092,7 @@ class TestInboundConfirmService(unittest.IsolatedAsyncioTestCase):
             _db: AsyncSession,
             inventory: BizPalletInventory,
             event: BizPalletEvent,
+            _scope: TestBatchScope,
         ) -> BizPalletEvent:
             actions.append(f'event-{inventory.pallet_id}')
             events.append(event)
diff --git a/shierfeng-fastapi-backend/tests/module_business/test_inventory_dao.py b/shierfeng-fastapi-backend/tests/module_business/test_inventory_dao.py
index a9736fa..1b72bc2 100644
--- a/shierfeng-fastapi-backend/tests/module_business/test_inventory_dao.py
+++ b/shierfeng-fastapi-backend/tests/module_business/test_inventory_dao.py
@@ -72,7 +72,7 @@ class TestDaoPublicContract(unittest.TestCase):
             'get_pallet_by_qr_token': ('db', 'qr_token', 'scope'),
             'get_pallets_by_ids': ('db', 'pallet_ids', 'scope'),
             'get_event_by_idempotency_key': ('db', 'pallet_id', 'idempotency_key', 'scope'),
-            'add_event': ('db', 'inventory', 'event'),
+            'add_event': ('db', 'inventory', 'event', 'scope'),
         }
         for method_name, parameter_names in expected.items():
             with self.subTest(method=method_name):
@@ -401,7 +401,7 @@ class TestInventoryDao(unittest.IsolatedAsyncioTestCase):
 
         self.db.flush.side_effect = assign_event_id
 
-        actual = await InventoryDao.add_event(self.db, inventory, event)
+        actual = await InventoryDao.add_event(self.db, inventory, event, TestBatchScope.formal())
 
         self.assertIs(event, actual)
         self.assertEqual(7, event.pallet_id)
@@ -417,6 +417,7 @@ class TestInventoryDao(unittest.IsolatedAsyncioTestCase):
             self.assertNotIn('max(', sql.lower())
             self.assertIn('biz_pallet_event.event_id = 40', sql)
             self.assertIn('biz_pallet_event.pallet_id = 7', sql)
+            self.assertIn('biz_pallet_event.test_batch_id IS NULL', sql)
             self.assertIn('FOR UPDATE', sql)
             self.assertNotIn('ORDER BY', sql)
             self.assertNotIn('LIMIT', sql)
@@ -429,7 +430,7 @@ class TestInventoryDao(unittest.IsolatedAsyncioTestCase):
         inventory = BizPalletInventory(pallet_id=8, last_event_id=None)
         event = BizPalletEvent(pallet_id=8, idempotency_key='first-key', event_id=51)
 
-        await InventoryDao.add_event(self.db, inventory, event)
+        await InventoryDao.add_event(self.db, inventory, event, TestBatchScope.formal())
 
         self.assertEqual(1, event.event_seq)
         self.assertEqual(51, inventory.last_event_id)
@@ -445,7 +446,7 @@ class TestInventoryDao(unittest.IsolatedAsyncioTestCase):
         event = BizPalletEvent(pallet_id=8, idempotency_key='broken-pointer')
 
         with self.assertRaisesRegex(RuntimeError, '托盘库存事件指针不一致'):
-            await InventoryDao.add_event(self.db, inventory, event)
+            await InventoryDao.add_event(self.db, inventory, event, TestBatchScope.formal())
 
         self.db.execute.assert_awaited_once()
         self.db.add.assert_not_called()
diff --git a/shierfeng-fastapi-backend/tests/module_business/test_return_service.py b/shierfeng-fastapi-backend/tests/module_business/test_return_service.py
index d374617..9eb5a0a 100644
--- a/shierfeng-fastapi-backend/tests/module_business/test_return_service.py
+++ b/shierfeng-fastapi-backend/tests/module_business/test_return_service.py
@@ -24,7 +24,7 @@ from module_business.dao.access_dao import AccessDao
 from module_business.dao.inventory_dao import InventoryDao
 from module_business.dao.master_dao import MasterDao
 from module_business.dao.operation_dao import OperationDao
-from module_business.domain.enums import PalletEventType, PalletFlowState, ReturnStatus
+from module_business.domain.enums import PalletEventType, PalletFlowState, ReturnStatus, TestBatchStatus
 from module_business.domain.test_batch_scope import TestBatchScope
 from module_business.entity.do.master_do import BizCustomerSite, BizPallet, BizWarehouse
 from module_business.entity.do.operation_do import (
@@ -44,6 +44,7 @@ from module_business.entity.vo.operation_vo import (
     ReturnScanQueryModel,
 )
 from module_business.service.access_service import AccessService
+from module_business.service.test_batch_access_service import TestBatchAccessService
 
 RETURN_SERVICE_SPEC = importlib.util.find_spec('module_business.service.return_service')
 RETURN_CONTROLLER_SPEC = importlib.util.find_spec('module_business.controller.return_controller')
@@ -741,6 +742,7 @@ class ReturnRequestTransactionRedTest(unittest.IsolatedAsyncioTestCase):
             _db: AsyncSession,
             _inventory: BizPalletInventory,
             event: BizPalletEvent,
+            _scope: TestBatchScope,
         ) -> BizPalletEvent:
             captured_events.append(event)
             return event
@@ -790,6 +792,48 @@ class ReturnRequestTransactionRedTest(unittest.IsolatedAsyncioTestCase):
         warehouse_access.assert_not_awaited()
         self.db.commit.assert_awaited_once()
 
+    async def test_request_integrity_error_recovers_same_test_batch_idempotently(self) -> None:
+        scope = TestBatchScope(batch_id=4, mode='TEST', status=TestBatchStatus.ACTIVE, writable=True)
+        winner = make_return_order(request_hash=ReturnService._build_request_hash(self.page))
+        winner.test_batch_id = 4
+        for item in winner.items:
+            item.test_batch_id = 4
+        inventories = [
+            make_inventory(2),
+            make_inventory(5, remaining=0, state=PalletFlowState.AT_SITE_EMPTY.value),
+        ]
+        pallets = [make_pallet(2), make_pallet(5)]
+        for inventory in inventories:
+            inventory.test_batch_id = 4
+        for pallet in pallets:
+            pallet.test_batch_id = 4
+        filling = make_filling(2)
+        filling.test_batch_id = 4
+        key_read = AsyncMock(side_effect=[None, None, winner])
+        order_lock = AsyncMock(return_value=winner)
+        batch_lock = AsyncMock()
+
+        with (
+            patch.object(TestBatchAccessService, 'lock_active_batch', new=batch_lock),
+            patch.object(AccessDao, 'list_user_site_ids', new=AsyncMock(return_value=[9])),
+            patch.object(OperationDao, 'get_return_by_request_idempotency_key', new=key_read),
+            patch.object(InventoryDao, 'get_inventories_for_update', new=AsyncMock(return_value=inventories)),
+            patch.object(InventoryDao, 'get_pallets_by_ids', new=AsyncMock(return_value=pallets)),
+            patch.object(OperationDao, 'get_active_filling_for_update', new=AsyncMock(return_value=filling)),
+            patch.object(OperationDao, 'get_return_for_update', new=order_lock),
+            patch.object(AccessService, 'assert_site_access', new=AsyncMock()),
+            patch.object(MasterDao, 'get_site', new=AsyncMock(return_value=SimpleNamespace(status='0'))),
+            patch.object(MasterDao, 'get_warehouse', new=AsyncMock(return_value=SimpleNamespace(status='0'))),
+            patch.object(OperationDao, 'add_return_order', new=AsyncMock(side_effect=integrity_error())),
+        ):
+            result = await ReturnService.request_return_services(self.db, self.page, self.user, scope)
+
+        self.assertTrue(result.is_success)
+        self.assertEqual(13, result.result)
+        self.assertEqual(3, batch_lock.await_count)
+        order_lock.assert_awaited_once_with(self.db, 13, scope, site_ids=[9], warehouse_ids=[])
+        self.assertEqual(3, self.db.rollback.await_count)
+
     async def test_concurrent_same_request_returns_winner_after_inventory_wait(self) -> None:  # noqa: PLR0915
         request_hash = ReturnService._build_request_hash(self.page)
         winner = make_return_order(request_hash=request_hash)
@@ -1265,6 +1309,7 @@ class ReturnRequestTransactionRedTest(unittest.IsolatedAsyncioTestCase):
             _db: AsyncSession,
             _inventory: BizPalletInventory,
             event: BizPalletEvent,
+            _scope: TestBatchScope,
         ) -> BizPalletEvent:
             events.append(event)
             return event
@@ -1595,6 +1640,7 @@ class ReturnConfirmTransactionRedTest(unittest.IsolatedAsyncioTestCase):
             _db: AsyncSession,
             _inventory: BizPalletInventory,
             event: BizPalletEvent,
+            _scope: TestBatchScope,
         ) -> BizPalletEvent:
             events.append(event)
             return event
diff --git a/shierfeng-fastapi-backend/tests/module_business/test_shipment_service.py b/shierfeng-fastapi-backend/tests/module_business/test_shipment_service.py
index 10b9b68..5da12fd 100644
--- a/shierfeng-fastapi-backend/tests/module_business/test_shipment_service.py
+++ b/shierfeng-fastapi-backend/tests/module_business/test_shipment_service.py
@@ -1626,6 +1626,7 @@ class ShipmentConfirmServiceTest(unittest.IsolatedAsyncioTestCase):
             _db: AsyncSession,
             inventory: BizPalletInventory,
             event: BizPalletEvent,
+            _scope: TestBatchScope,
         ) -> BizPalletEvent:
             actions.append(f'event-{inventory.pallet_id}')
             event.event_id = 200 + inventory.pallet_id
diff --git a/shierfeng-fastapi-backend/tests/module_business/test_usage_service.py b/shierfeng-fastapi-backend/tests/module_business/test_usage_service.py
index 2d0824f..e278504 100644
--- a/shierfeng-fastapi-backend/tests/module_business/test_usage_service.py
+++ b/shierfeng-fastapi-backend/tests/module_business/test_usage_service.py
@@ -884,6 +884,7 @@ class TestRecordUsageCore(unittest.IsolatedAsyncioTestCase):
             _db: AsyncSession,
             inventory: BizPalletInventory,
             event: BizPalletEvent,
+            _scope: TestBatchScope,
         ) -> BizPalletEvent:
             actions.append('event-flush')
             event.event_id = 91