fix: 创建产品时自动将当前位置设为当前登录用户(谁创建谁持有)

backend/app/services/product_service.py

@@ -147,8 +147,8 @@ async def get_product(db: AsyncSession, product_id: uuid.UUID) -> Product:
     return product
 
 
-async def create_product(db: AsyncSession, data: ProductCreate) -> ProductResponse:
-    """创建产品 — 自动生成 16 位 HEX 序列号"""
+async def create_product(db: AsyncSession, data: ProductCreate, creator_username: str = "") -> ProductResponse:
+    """创建产品 — 自动生成 16 位 HEX 序列号，初始位置设为创建者"""
     from app.services.counter_service import ensure_sequence, next_hex_id
     from app.models.production_order import ProductionOrder
 
@@ -180,10 +180,18 @@ async def create_product(db: AsyncSession, data: ProductCreate) -> ProductRespon
         material_type=data.material_type or None,
         external_serial=data.external_serial,
         parent_product_id=data.parent_product_id,
+        current_location_id=creator_username or None,  # 谁创建，初始位置就是谁
     )
     db.add(product)
     await db.commit()
     await db.refresh(product, ["order"])
+
+    # 查创建者的真实姓名
+    creator_display_name = ""
+    if creator_username:
+        name_map = _lookup_display_names([creator_username])
+        creator_display_name = name_map.get(creator_username, "")
+
     return ProductResponse(
         id=product.id,
         serial_number=product.serial_number,
@@ -197,6 +205,7 @@ async def create_product(db: AsyncSession, data: ProductCreate) -> ProductRespon
         material_type=product.material_type,
         parent_product_id=product.parent_product_id,
         current_location_id=product.current_location_id,
+        current_location_name=creator_display_name or None,
         overall_status=product.overall_status,
         status=product.status,
         created_at=product.created_at,