新增: AI工单处理工作台 v1.0

- Go Gin 后端 (19个源文件): 认证、工单CRUD、GLM AI分析、状态流转、备注、操作日志
- Arco Design Vue 前端: 登录、工单列表/详情/创建、AI分析触发与确认
- MySQL 5表: ticket_user/ticket_info/ticket_ai_analysis/ticket_operation_log/ticket_note
- 部署: tk.1216.top HTTPS, Nginx反代

backend/internal/dto/common.go

@@ -0,0 +1,28 @@
+package dto
+
+type Response struct {
+	Success bool        `json:"success"`
+	Retcode int         `json:"retcode"`
+	Retinfo string      `json:"retinfo"`
+	Result  interface{} `json:"result,omitempty"`
+}
+
+func Success(data interface{}) Response {
+	return Response{Success: true, Retcode: 0, Retinfo: "", Result: data}
+}
+
+func Error(code int, msg string) Response {
+	return Response{Success: false, Retcode: code, Retinfo: msg}
+}
+
+func Fail(msg string) Response {
+	return Response{Success: false, Retcode: -1, Retinfo: msg}
+}
+
+type UserSession struct {
+	Userid   int    `json:"userid"`
+	Username string `json:"username"`
+	Account  string `json:"account"`
+	Role     int16  `json:"role"`
+	Team     string `json:"team"`
+}