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/middleware/auth.go

@@ -0,0 +1,58 @@
+package middleware
+
+import (
+	"github.com/casehub/ticket-workbench/internal/model"
+	"github.com/casehub/ticket-workbench/internal/service"
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+)
+
+func Auth(db *gorm.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		sessionID := extractSessionID(c)
+		if sessionID == "" {
+			c.JSON(200, map[string]interface{}{"success": false, "retcode": -1, "retinfo": "未登录"})
+			c.Abort()
+			return
+		}
+
+		user := service.GetUserBySession(sessionID)
+		if user == nil {
+			c.JSON(200, map[string]interface{}{"success": false, "retcode": -1, "retinfo": "登录已过期"})
+			c.Abort()
+			return
+		}
+
+		c.Set("userid", user.Userid)
+		c.Set("username", user.Username)
+		c.Set("role", user.Role)
+		c.Set("team", user.Team)
+		c.Next()
+	}
+}
+
+func extractSessionID(c *gin.Context) string {
+	if s := c.GetHeader("Authorization"); s != "" {
+		return s
+	}
+	if s := c.GetHeader("jsessionid"); s != "" {
+		return s
+	}
+	return ""
+}
+
+func GetCurrentUser(c *gin.Context) *model.TicketUser {
+	userid, exists := c.Get("userid")
+	if !exists {
+		return nil
+	}
+	username, _ := c.Get("username")
+	role, _ := c.Get("role")
+	team, _ := c.Get("team")
+	return &model.TicketUser{
+		Userid:   userid.(int),
+		Username: username.(string),
+		Role:     role.(int16),
+		Team:     team.(string),
+	}
+}