fix: reload when reconnects
fix: "session过期"错误
fix: use localhost as socket server
fix: 在"未处理"标签中仍可收发消息
fix: make dev available
fix: 显示接待信息，提示客服对话
fix: add loading mask in Sidebar
fix: minor change
fix: recept by notification has some bug
docs: update readme
work in progress