style(backend): ruff format 统一此前批次的排版残留

纯排版无行为变化（ruff format 重排 7 个此前批次的文件），
涉及模块集成回归全绿（67 passed）。

Co-Authored-By: Claude Code <noreply@anthropic.com>

backend/app/api/v1/business/shipments.py

@@ -50,9 +50,7 @@ def create_shipment(
     )
 
 
-@router.get(
+@router.get("/{shipment_id}", response_model=ApiResponse[ShipmentDetailOut], summary="发货单详情")
-    "/{shipment_id}", response_model=ApiResponse[ShipmentDetailOut], summary="发货单详情"
-)
 def get_shipment(
     session: DbSession,
     _: CurrentUser,

backend/app/repositories/customer_repository.py

@@ -29,9 +29,7 @@ def count_business_refs(session: Session, customer_id: int) -> int:
 
     return int(
         session.execute(
-            select(func.count())
+            select(func.count()).select_from(Business).where(Business.customer_id == customer_id)
-            .select_from(Business)
-            .where(Business.customer_id == customer_id)
         ).scalar_one()
     )
 

backend/app/repositories/receipt_repository.py

@@ -88,9 +88,7 @@ def list_receipts(
         is_barter=is_barter,
         settlement_status=settlement_status,
     )
-    return list(
+    return list(session.execute(stmt.order_by(Receipt.id.desc()).offset(offset).limit(limit)).all())
-        session.execute(stmt.order_by(Receipt.id.desc()).offset(offset).limit(limit)).all()
-    )
 
 
 def count_receipts(

backend/app/repositories/shipment_repository.py

@@ -59,9 +59,7 @@ def list_shipments(
 ) -> list[tuple[Shipment, str]]:
     """分页查询发货单（附业务号），按 id 倒序。"""
     stmt = _apply_filters(
-        select(Shipment, Business.business_no).join(
+        select(Shipment, Business.business_no).join(Business, Business.id == Shipment.business_id),
-            Business, Business.id == Shipment.business_id
-        ),
         business_id=business_id,
         ship_date_from=ship_date_from,
         ship_date_to=ship_date_to,

backend/app/schemas/receipt.py

@@ -30,9 +30,7 @@ class ReceiptCreateIn(BaseModel):
     model_config = ConfigDict(str_strip_whitespace=True)
 
     business_id: int = Field(ge=1, description="业务ID")
-    shipment_id: int | None = Field(
+    shipment_id: int | None = Field(default=None, ge=1, description="发货单ID，可空=暂未指定")
-        default=None, ge=1, description="发货单ID，可空=暂未指定"
-    )
     receipt_date: date = Field(description="回款到账日（M3 按此日匹配参数版本）")
     amount: str = Field(description="回款金额（元），≥0，最多两位小数")
     is_barter: int = Field(default=0, ge=0, le=1, description="以物抵顶标记：1是 0否")

backend/tests/integration/test_customers.py

@@ -151,9 +151,7 @@ class TestCrudFlow:
         assert dup.status_code == 400, dup.text
         assert "该公司名称与负责人的客户已存在" in dup.json()["message"]
 
-    def test_删除被业务引用的客户_400引导处理单据(
+    def test_删除被业务引用的客户_400引导处理单据(self, client: TestClient, normal: dict) -> None:
-        self, client: TestClient, normal: dict
-    ) -> None:
         """业务表就位后删除保护补齐：FK RESTRICT 不能以 500 暴露。"""
         headers = normal["headers"]
         customer = _create_customer(client, headers)

backend/tests/integration/test_personnel.py

@@ -235,7 +235,9 @@ class TestDeleteProtection:
         member = _create(client, headers, manager_id=manager["id"])  # 团队成员占用
         blocked = client.delete(f"{_PERSONNEL}/{manager['id']}", headers=headers)
         assert blocked.status_code == 400, blocked.text
-        assert "存在团队成员、客户归属或业务归属引用，请改为离职而非删除" in blocked.json()["message"]
+        assert (
+            "存在团队成员、客户归属或业务归属引用，请改为离职而非删除" in blocked.json()["message"]
+        )
 
         client.delete(f"{_PERSONNEL}/{member['id']}", headers=headers)
         freed = client.delete(f"{_PERSONNEL}/{manager['id']}", headers=headers)
@@ -261,7 +263,9 @@ class TestDeleteProtection:
 
         blocked = client.delete(f"{_PERSONNEL}/{owner['id']}", headers=headers)
         assert blocked.status_code == 400, blocked.text
-        assert "存在团队成员、客户归属或业务归属引用，请改为离职而非删除" in blocked.json()["message"]
+        assert (
+            "存在团队成员、客户归属或业务归属引用，请改为离职而非删除" in blocked.json()["message"]
+        )
 
         # 保护与在职状态无关：离职并不能让物理删除放行
         client.put(f"{_PERSONNEL}/{owner['id']}/status", json={"status": 0}, headers=headers)
@@ -273,9 +277,7 @@ class TestDeleteProtection:
         freed = client.delete(f"{_PERSONNEL}/{owner['id']}", headers=headers)
         assert freed.status_code == 200, freed.text
 
-    def test_被业务归属引用禁删_负责或协助任一即拦(
+    def test_被业务归属引用禁删_负责或协助任一即拦(self, client: TestClient, normal: dict) -> None:
-        self, client: TestClient, normal: dict
-    ) -> None:
         """业务表就位后删除保护补齐：负责/协助引用任一即拦，FK 不以 500 暴露。"""
         headers = normal["headers"]
         owner = _create(client, headers)