支持坐席切换在线状态，转接列表展示状态

侧栏可切换在线/忙碌/离线；转接弹窗显示状态点与标签，列表含在线与忙碌坐席。

server/internal/handler/auth.go

@@ -2,6 +2,7 @@ package handler
 
 import (
 	"net/http"
+	"time"
 
 	"github.com/gin-gonic/gin"
 	"golang.org/x/crypto/bcrypt"
@@ -41,6 +42,14 @@ func (h *AuthHandler) Login(c *gin.Context) {
 		return
 	}
 
+	// 登录后默认置为在线（可被坐席自行改忙碌/离线）
+	now := time.Now()
+	_ = model.DB.Model(&user).Updates(map[string]interface{}{
+		"status":         "online",
+		"last_online_at": now,
+	}).Error
+	user.Status = "online"
+
 	token, err := middleware.GenerateToken(user.ID, user.TenantID, user.Role)
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": "生成token失败"})
@@ -56,6 +65,68 @@ func (h *AuthHandler) Login(c *gin.Context) {
 			"tenant_id": user.TenantID,
 			"nickname":  user.Nickname,
 			"role":      user.Role,
+			"status":    user.Status,
 		},
 	})
 }
+
+// Me 当前登录用户信息。
+func (h *AuthHandler) Me(c *gin.Context) {
+	var user model.User
+	if err := model.DB.Select("id", "tenant_id", "nickname", "role", "status", "username").
+		First(&user, middleware.GetUserID(c)).Error; err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"code": 404, "message": "用户不存在"})
+		return
+	}
+	middleware.JSON(c, gin.H{
+		"user_id":   user.ID,
+		"tenant_id": user.TenantID,
+		"nickname":  user.Nickname,
+		"role":      user.Role,
+		"status":    user.Status,
+		"username":  user.Username,
+	})
+}
+
+type UpdatePresenceReq struct {
+	Status string `json:"status" binding:"required"`
+}
+
+// UpdatePresence 坐席自行切换在线状态（online / busy / offline）。
+func (h *AuthHandler) UpdatePresence(c *gin.Context) {
+	var req UpdatePresenceReq
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "参数错误"})
+		return
+	}
+	status := req.Status
+	if status != "online" && status != "busy" && status != "offline" {
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "状态仅支持 online / busy / offline"})
+		return
+	}
+
+	userID := middleware.GetUserID(c)
+	var user model.User
+	if err := model.DB.First(&user, userID).Error; err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"code": 404, "message": "用户不存在"})
+		return
+	}
+	if user.Status == "disabled" {
+		c.JSON(http.StatusForbidden, gin.H{"code": 403, "message": "账号已停用"})
+		return
+	}
+
+	updates := map[string]interface{}{"status": status}
+	if status == "online" {
+		updates["last_online_at"] = time.Now()
+	}
+	if err := model.DB.Model(&user).Updates(updates).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": "更新状态失败"})
+		return
+	}
+	user.Status = status
+	middleware.JSON(c, gin.H{
+		"user_id": user.ID,
+		"status":  user.Status,
+	})
+}