改动位置

- Netease-sync/server.js
      - 记录 downloadStatus
      - 记录 unmatchedSongs
      - 输出 [Sync] Unmatched songs (N): ... (id=..., downloaded=...)

Netease-sync/server.js

@@ -771,6 +771,8 @@ async function syncPlaylist(playlist, cachedInfo = null) {
         const totalTracks = tracks.length;
         let syncedCount = 0;
         let failedCount = 0;
+        const downloadStatus = {};
+        const unmatchedSongs = [];
         
         syncStatus[playlistId] = { status: 'syncing', progress: 10, message: `获取到 ${totalTracks} 首歌曲` };
         
@@ -796,9 +798,11 @@ async function syncPlaylist(playlist, cachedInfo = null) {
             const batch = songs.slice(i, i + BATCH_SIZE);
             await Promise.all(batch.map(async (song) => {
                 try {
-                    await processSong(song);
+                    const ok = await processSong(song);
+                    downloadStatus[song.id] = ok;
                 } catch (e) {
                     console.error(`[Sync] Failed to process song ${song.name}:`, e);
+                    downloadStatus[song.id] = false;
                 }
             }));
             
@@ -846,6 +850,13 @@ async function syncPlaylist(playlist, cachedInfo = null) {
                 syncedCount++;
             } else {
                 failedCount++;
+                unmatchedSongs.push({
+                    id: neteaseSongId,
+                    name: song.name,
+                    artist: song.artist,
+                    album: song.album,
+                    downloaded: downloadStatus[neteaseSongId] === true
+                });
             }
             
             const progress = 80 + Math.floor((i + 1) / songs.length * 15); // 80% -> 95%
@@ -858,6 +869,14 @@ async function syncPlaylist(playlist, cachedInfo = null) {
         
         syncStatus[playlistId] = { status: 'syncing', progress: 95, message: '更新 Navidrome 歌单...' };
 
+        if (unmatchedSongs.length > 0) {
+            const maxLog = 20;
+            const preview = unmatchedSongs.slice(0, maxLog)
+                .map(s => `${s.name} - ${s.artist} (id=${s.id}, downloaded=${s.downloaded})`)
+                .join(' | ');
+            console.warn(`[Sync] Unmatched songs (${unmatchedSongs.length}): ${preview}${unmatchedSongs.length > maxLog ? ' ...' : ''}`);
+        }
+        
         // 1. Try to link existing Navidrome playlist by name if ID is missing
         if (!playlist.navidromePlaylistId) {
             console.log(`[Sync] searching for existing Navidrome playlist with name: ${playlist.name}`);