管理后台新增用户总数卡片，点击进入用户管理，移除header用户管理按钮

internal/handler/user.go

@@ -44,6 +44,12 @@ func formatUser(u *model.User) userResponse {
 	}
 }
 
+func GetUserCount(c *gin.Context) {
+	var count int64
+	db.DB.Model(&model.User{}).Count(&count)
+	c.JSON(http.StatusOK, gin.H{"count": count})
+}
+
 func ListUsers(c *gin.Context) {
 	var users []model.User
 	db.DB.Order("id asc").Find(&users)

internal/router/router.go

@@ -26,6 +26,7 @@ func Setup(r *gin.Engine) {
 	admin := r.Group("/api/admin")
 	admin.Use(middleware.AuthMiddleware(), middleware.AdminMiddleware())
 	{
+		admin.GET("/users/count", handler.GetUserCount)
 		admin.GET("/users", handler.ListUsers)
 		admin.POST("/users", handler.CreateUser)
 		admin.PUT("/users/:id", handler.UpdateUser)