feat: 重构消息处理模块，引入统一的消息接口和类型安全的消息解析

service/xibao/image_gen.go

@@ -5,7 +5,7 @@ import (
 	"os"
 	"strings"
 
-	"git.lxtend.com/qqbot/model"
+	"git.lxtend.com/qqbot/message"
 	"git.lxtend.com/qqbot/util"
 	"github.com/fogleman/gg"
 	"github.com/google/uuid"
@@ -157,8 +157,9 @@ func GenerateCongratulationImage(text string, inputFile, outputFile string, isGo
 }
 
 func isImageCQ(text string) (string, bool) {
-	if img, err := model.ParseCQImageMessage(text); err == nil {
-		return img.Data.URL, true
+	imgMsg := message.ImageMessage{}
+	if err := imgMsg.ParseMessage(text); err == nil {
+		return imgMsg.Data.URL, true
 	}
 	return "", false
 }