refactor(playlists): 移除 Tunehub 相关代码并统一使用网易云 API

删除不再使用的 Tunehub 歌单处理逻辑，统一使用网易云音乐 API 获取歌单详情。修改 listSongsFromPlaylist 方法直接调用 getSongsFromPlaylist 接口，简化代码结构并确保版权信息正确。

backend/src/handler/playlists.js

@@ -1,6 +1,5 @@
 const logger = require('consola');
-const { getUserAllPlaylist } = require('../service/music_platform/wycloud');
-const { getPlaylistDetail } = require('../service/music_platform/tunehub');
+const { getUserAllPlaylist, getSongsFromPlaylist } = require('../service/music_platform/wycloud');
 const Source = require('../consts/source').consts;
 
 function splitArtists(artist) {
@@ -13,38 +12,6 @@ function splitArtists(artist) {
         .filter(Boolean);
 }
 
-function normalizeTunehubPlaylist(playlistId, detail) {
-    const info = detail && detail.info ? detail.info : {};
-    const list = detail && Array.isArray(detail.list) ? detail.list : [];
-
-    const songs = list.map(item => {
-        const artists = splitArtists(item.artist);
-        const primaryArtist = artists[0] || item.artist || '';
-        const cover = item.pic || info.pic || '';
-        const isBlocked = !item.types || item.types.length === 0;
-        return {
-            songId: item.id,
-            songName: item.name || '',
-            artists,
-            artist: primaryArtist,
-            duration: 0,
-            album: item.album || '',
-            cover,
-            pageUrl: `https://music.163.com/song?id=${item.id}`,
-            playUrl: item.url || '',
-            isBlocked,
-            isCloud: false,
-        };
-    });
-
-    return {
-        id: playlistId,
-        name: info.name || '',
-        cover: info.pic || '',
-        songs,
-    };
-}
-
 async function listAllPlaylists(req, res) {
     const uid = req.account.uid;
     const playlists = await getUserAllPlaylist(uid);
@@ -72,16 +39,22 @@ async function listSongsFromPlaylist(req, res) {
         });
         return;
     }
-    const detail = await getPlaylistDetail(source, playlistId);
-    if (detail === false) {
-        logger.error(`get playlist detail failed, uid: ${uid}`);
+
+    // 使用网易云 API 获取歌单详情（包含正确的版权信息）
+    const playlist = await getSongsFromPlaylist(uid, source, playlistId);
+    if (playlist === false) {
+        logger.error(`get playlist detail failed, uid: ${uid}, playlistId: ${playlistId}`);
+        res.send({
+            status: 1,
+            message: "获取歌单详情失败",
+        });
+        return;
     }
-    const playlists = detail ? normalizeTunehubPlaylist(playlistId, detail) : false;
 
     res.send({
-        status: playlists ? 0 : 1,
+        status: 0,
         data: {
-            playlists: playlists ? playlists : [],
+            playlists: playlist,
         }
     });
 }