feat: tag routes

internal/domain/auth/register.go

@@ -3,7 +3,7 @@ package authdomain
 type RegisterUserReq struct {
 	Email           string `json:"email" validate:"required"`
 	Password        string `json:"password" validate:"required"`
-	Phone           string `json:"phone"`
+	Phone           string `json:"phone" validate:"required"`
 	SubscribePlanID string `json:"subscribe_plan_id"`
 }