fix: 增加工作流中邮箱格式校验

Agent-Logs-Url: https://github.com/qinfendebingshuo/guanghulab/sessions/90aad306-0211-4a5b-b8b2-a130ae758c92

Co-authored-by: qinfendebingshuo <207279273+qinfendebingshuo@users.noreply.github.com>

.github/workflows/infinity-evolution.yml

@@ -165,6 +165,10 @@ jobs:
                 echo "💡 可先使用 list-user-emails 查看所有用户邮箱"
                 exit 1
               fi
+              if ! echo "$EMAIL" | grep -qE '^[^@]+@[^@]+\.[^@]+$'; then
+                echo "❌ 邮箱格式不正确: $EMAIL"
+                exit 1
+              fi
               echo "单独发送更新通知给: $EMAIL ..."
               $SSH_CMD "
                 cd $PROXY_DIR