入库管理三页面类别搜索中间节点支持子级匹配（buy/semi/product 类别过滤改为 ilike 前缀，与基础信息页一致）

inventory-backend/app/services/inbound/semi_service.py

@@ -439,7 +439,8 @@ class SemiInboundService:
                 sku_str = f'%{sku.strip()}%'
                 query = query.filter(StockSemi.sku.ilike(sku_str))
             if category and category.strip():
-                query = query.filter(MaterialBase.category == category.strip())
+                # 级联选择器：中间节点用前缀匹配，与 base_service.get_list 行为一致
+                query = query.filter(MaterialBase.category.ilike(f"{category.strip()}%"))
             if material_type and material_type.strip():
                 query = query.filter(MaterialBase.material_type == material_type.strip())