修复：强化装填事务一致性

shierfeng-fastapi-backend/module_business/dao/master_dao.py

@@ -117,7 +117,7 @@ class MasterDao:
     ) -> Any | None:
         statement = select(model).where(id_column == resource_id)
         if for_update:
-            statement = statement.with_for_update()
+            statement = statement.with_for_update().execution_options(populate_existing=True)
         result = await db.execute(statement)
         return result.scalar_one_or_none()
 
@@ -187,8 +187,20 @@ class MasterDao:
         return await cls._paginate(db, statement, query_object, is_page)
 
     @classmethod
-    async def get_strain(cls, db: AsyncSession, strain_id: int) -> BizStrain | None:
-        return await cls._get(db, BizStrain, BizStrain.strain_id, strain_id)
+    async def get_strain(
+        cls,
+        db: AsyncSession,
+        strain_id: int,
+        *,
+        for_update: bool = False,
+    ) -> BizStrain | None:
+        return await cls._get(
+            db,
+            BizStrain,
+            BizStrain.strain_id,
+            strain_id,
+            for_update=for_update,
+        )
 
     @classmethod
     async def find_strain_by_code(cls, db: AsyncSession, strain_code: str) -> BizStrain | None: