Fix bug where generated messages have wrong guids

prompt/prompt.go

@@ -9,6 +9,7 @@ import (
 	"code.severnaya.net/kordophone-mock/v2/model"
 	"code.severnaya.net/kordophone-mock/v2/server"
 	"github.com/chzyer/readline"
+	"github.com/google/uuid"
 	"github.com/rs/zerolog/log"
 )
 
@@ -81,7 +82,7 @@ func (p *Prompt) receiveMessage(guid string, text string) {
 	}
 
 	message := model.Message{
-		Guid:   guid,
+		Guid:   uuid.New().String(),
 		Sender: &conversation.Participants[0],
 		Text:   text,
 		Date:   time.Now(),