fix: 优化清理失效账号执行响应的 success 标志，对 test_account/delete_account 引入外部 API 日志审计，并对账号 ID 进行安全转义

backend/app/routers/websites.py

@@ -1085,9 +1085,23 @@ def execute_cleanup_invalid_accounts(wid: int, db: Session = Depends(get_db), _=
         db.commit()
 
         deleted_count = sum(1 for item in items if item.action_status in ("deleted", "already_deleted"))
+        failed_count = sum(1 for item in items if item.action_status == "failed")
+        skipped_count = sum(1 for item in items if item.action_status == "skipped")
+        success = (failed_count == 0)
+
+        msg_parts = []
+        if deleted_count:
+            msg_parts.append(f"成功清理 {deleted_count} 个")
+        if failed_count:
+            msg_parts.append(f"失败 {failed_count} 个")
+        if skipped_count:
+            msg_parts.append(f"跳过 {skipped_count} 个")
+
+        message = "清理执行完毕：" + "，".join(msg_parts) if msg_parts else "没有需要清理的失效账号"
+
         return CleanupInvalidAccountsExecuteResponse(
-            success=True,
-            message=f"清理执行完毕，成功处理了 {deleted_count} 个失效账号",
+            success=success,
+            message=message,
             items=items
         )