refactor: 更新 convertScoreSaberToSongData 函数，使用 util.GenTempFilePath 生成临时文件路径以避免文件名冲突

handler/scoresaber/bs50.go

@@ -10,7 +10,6 @@ import (
 	"log"
 	"net/http"
 	"os"
-	"path/filepath"
 	"strings"
 	"sync"
 	"time"
@@ -510,7 +509,7 @@ var difficultyColors = map[string]color.Color{
 // 将 ScoreSaber 分数转换为 SongData
 func convertScoreSaberToSongData(score ScoreSaberPlayerScore, cwd string) (SongData, error) {
 	// 下载封面图片
-	jacketPath := filepath.Join(cwd, "jackets", score.Leaderboard.SongHash+".png")
+	jacketPath := util.GenTempFilePath(score.Leaderboard.SongHash + ".png")
 	if _, err := os.Stat(jacketPath); os.IsNotExist(err) {
 		resp, err := http.Get(score.Leaderboard.CoverImage)
 		if err != nil {