feat: add cumulative pending quantity validation before material deletion

Added validation to check if cumulative pending quantity is empty before allowing material deletion, with appropriate emoji indicators for delete eligibility.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

utils/离散备料计划维护数据清理.py

@@ -206,12 +206,15 @@ class DiscreteMaterialPlanCleaner:
                 self._print(f"材料名称:{material_name}")
 
                 # 获取累计待发数量
+                # 创建一个变量来保存累计待发数量的值，以便后续使用
+                cumulative_pending_quantity = 0
                 input_box = (
                     child_form.locator("div")
                     .filter(has_text=re.compile(r"^累计待发数量$"))
                     .locator("input[type='text']")
                 )
-                self._print(f"累计待发数量:{input_box.input_value()}")
+                cumulative_pending_quantity = input_box.input_value()
+                self._print(f"累计待发数量:{cumulative_pending_quantity}")
 
                 # 获取累计出库数量
                 input_box = (
@@ -226,6 +229,10 @@ class DiscreteMaterialPlanCleaner:
                 should_delete = should_delete_material(manager_name, material_code)
 
                 if should_delete:
+                    if not cumulative_pending_quantity :
+                        self._print(f"✅ 可以删除")
+                    else:
+                        self._print(f"❌ 累计待发数量不为空，无法删除")
                     self._print(
                         f">>> 需要清理：材料名称【{material_name}】材料编码【{material_code}】"
                     )