fix: auto-save report after clean() completes in GUI and CLI

- Add save_report parameter to DiscreteMaterialPlanCleaner (default True)
- Auto-save report at end of clean() method when save_report_enabled
- Remove explicit save_report() call from main() (now automatic)
- Pass save_report=True in GUI _delete_worker()

This ensures reports are saved for both GUI and CLI execution paths.

Co-Authored-By: Claude (glm-5) <noreply@anthropic.com>

utils/discrete_material_plan_cleaner.py

@@ -43,6 +43,7 @@ class DiscreteMaterialPlanCleaner:
         headless=False,
         verbose=True,
         dryrun=False,
+        save_report: bool = True,
         progress_callback: Optional[Callable[[int, int, str], None]] = None,
     ):
         self.username = username
@@ -50,6 +51,7 @@ class DiscreteMaterialPlanCleaner:
         self.headless = headless
         self.verbose = verbose
         self.dryrun = dryrun
+        self.save_report_enabled = save_report
         self.progress_callback = progress_callback
 
         # 参数规范化：支持 str、List[str]、None
@@ -513,6 +515,14 @@ class DiscreteMaterialPlanCleaner:
         # 记录结束时间
         self.stats["end_time"] = datetime.now()
 
+        # 自动保存报告（如果启用）
+        if self.save_report_enabled:
+            try:
+                report_path = self.save_report()
+                self._log(f"报告已保存至: {report_path}")
+            except Exception as e:
+                self._log(f"保存报告失败: {e}", "error")
+
     def generate_report(self) -> str:
         """生成 Markdown 格式的执行报告
 
@@ -607,6 +617,41 @@ class DiscreteMaterialPlanCleaner:
 
         return "\n".join(report_lines)
 
+    def save_report(self, output_dir: str = "data/reports") -> str:
+        """保存报告到文件
+
+        Args:
+            output_dir: 报告保存目录，默认为 data/reports
+
+        Returns:
+            保存的文件路径
+        """
+        # 确保目录存在
+        os.makedirs(output_dir, exist_ok=True)
+
+        # 生成时间戳文件名
+        timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+        filename = f"report_{timestamp}.md"
+        filepath = os.path.join(output_dir, filename)
+
+        # 生成报告内容
+        report_content = self.generate_report()
+
+        # 构建元数据（YAML Front Matter）
+        metadata = "---\n"
+        metadata += f"生成时间: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}\n"
+        metadata += f"负责人: {', '.join(self.manager_names) if self.manager_names else '全部'}\n"
+        metadata += f"执行模式: {'预览模式' if self.dryrun else '正常执行'}\n"
+        metadata += f"处理订单数: {self.stats['processed_orders']}\n"
+        metadata += f"删除物料数: {len(self.stats['deleted_materials'])}\n"
+        metadata += "---\n\n"
+
+        # 写入文件
+        with open(filepath, "w", encoding="utf-8") as f:
+            f.write(metadata + report_content)
+
+        return filepath
+
 
 def main():
     # 路径配置
@@ -621,6 +666,7 @@ def main():
     )
 
     cleaner.clean(id_file)
+
     input("执行完毕，按回车键退出程序...")