功能：增加测试批次生命周期管理

shierfeng-fastapi-backend/module_business/entity/vo/test_batch_vo.py

@@ -7,6 +7,7 @@ from pydantic.alias_generators import to_camel
 from module_business.domain.enums import TestBatchStatus
 
 PositiveId = Annotated[int, Field(gt=0)]
+NonNegativeCount = Annotated[int, Field(ge=0)]
 
 
 class TestBatchApiModel(BaseModel):
@@ -45,7 +46,7 @@ class TestBatchModel(TestBatchApiModel):
     closed_at: datetime | None = None
     purged_by: int | None = None
     purged_at: datetime | None = None
-    purge_summary: dict[str, int] | None = None
+    purge_summary: dict[str, NonNegativeCount] | None = None
 
 
 class TestBatchOptionModel(TestBatchApiModel):