refactor: 优化 SendMsg 函数中的消息处理逻辑，支持不同类型的 ReplyMsg，提升代码灵活性和可读性

action/action.go

@@ -2,6 +2,7 @@ package action
 
 import (
 	"encoding/json"
+	"fmt"
 	"log"
 	"strconv"
 	"sync"
@@ -44,7 +45,12 @@ func (am *actionManager) SendMsg(reply *model.Reply) error {
 				ID: int(reply.FromMsg.OriginMsgId),
 			},
 		}
-		reply.ReplyMsg = append([]any{replyMsg}, reply.ReplyMsg)
+		switch reply.ReplyMsg.(type) {
+		case []any:
+			reply.ReplyMsg = append([]any{replyMsg}, reply.ReplyMsg)
+		case string:
+			reply.ReplyMsg = fmt.Sprintf("%s%s", replyMsg.ToCQString(), reply.ReplyMsg)
+		}
 	}
 	userID := strconv.FormatInt(reply.FromMsg.UserId, 10)
 	if reply.FromMsg.UserId == 0 {