diff --git a/internal/service/qbittorrent_adp.go b/internal/service/qbittorrent_adp.go
index 740e755..15aaf28 100644
--- a/internal/service/qbittorrent_adp.go
+++ b/internal/service/qbittorrent_adp.go
@@ -14,7 +14,6 @@ import (
 	"net/http"
 	"net/http/cookiejar"
 	"net/url"
-	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -299,40 +298,3 @@ func (a *QBitAdapter) ensureAuthLocked(ctx context.Context) error {
 	}
 	return a.loginLocked(ctx)
 }
-
-// --- 为了与现有的 QBitClient 兼容，添加转换辅助函数 ---
-
-// QBitTorrentToInfo 将旧的 QBitTorrent 转换为新的 TorrentInfo。
-func QBitTorrentToInfo(q QBitTorrent) TorrentInfo {
-	return TorrentInfo{
-		Hash:      q.Hash,
-		Name:      q.Name,
-		Size:      q.Size,
-		Progress:  float64(q.Progress),
-		DLSpeed:   q.DLSpeed,
-		UPSpeed:   q.UpSpeed,
-		State:     q.State,
-		SavePath:  q.SavePath,
-		NumSeeds:  q.NumSeeds,
-		NumLeechs: q.NumLeech,
-	}
-}
-
-// TorrentInfoToQBit 将 TorrentInfo 转换回旧的 QBitTorrent 格式（兼容性）。
-func TorrentInfoToQBit(t TorrentInfo) QBitTorrent {
-	return QBitTorrent{
-		Hash:     t.Hash,
-		Name:     t.Name,
-		State:    t.State,
-		Progress: float32(t.Progress),
-		DLSpeed:  t.DLSpeed,
-		UpSpeed:  t.UPSpeed,
-		NumSeeds: t.NumSeeds,
-		NumLeech: t.NumLeechs,
-		Size:     t.Size,
-		SavePath: t.SavePath,
-	}
-}
-
-// unused import guard
-var _ = strconv.Itoa
diff --git a/internal/service/qbittorrent_convert.go b/internal/service/qbittorrent_convert.go
new file mode 100644
index 0000000..b5c07ca
--- /dev/null
+++ b/internal/service/qbittorrent_convert.go
@@ -0,0 +1,33 @@
+package service
+
+// QBitTorrentToInfo 将旧的 QBitTorrent 转换为新的 TorrentInfo。
+func QBitTorrentToInfo(q QBitTorrent) TorrentInfo {
+	return TorrentInfo{
+		Hash:      q.Hash,
+		Name:      q.Name,
+		Size:      q.Size,
+		Progress:  float64(q.Progress),
+		DLSpeed:   q.DLSpeed,
+		UPSpeed:   q.UpSpeed,
+		State:     q.State,
+		SavePath:  q.SavePath,
+		NumSeeds:  q.NumSeeds,
+		NumLeechs: q.NumLeech,
+	}
+}
+
+// TorrentInfoToQBit 将 TorrentInfo 转换回旧的 QBitTorrent 格式（兼容性）。
+func TorrentInfoToQBit(t TorrentInfo) QBitTorrent {
+	return QBitTorrent{
+		Hash:     t.Hash,
+		Name:     t.Name,
+		State:    t.State,
+		Progress: float32(t.Progress),
+		DLSpeed:  t.DLSpeed,
+		UpSpeed:  t.UPSpeed,
+		NumSeeds: t.NumSeeds,
+		NumLeech: t.NumLeechs,
+		Size:     t.Size,
+		SavePath: t.SavePath,
+	}
+}