debug(sync): logs serveur yt-history/WL (counts + detail erreur)

server/index.mjs

@@ -673,6 +673,9 @@ r.get('/oauth/google/watchlater', authMiddlewareCookieAware, oauthLimiter, async
         console.warn(`[oauth] WL Data API indisponible (${apiError.message}), repli youtubei.js`);
       } catch {}
       const { items } = await fetchInnerTubeWatchLaterViaLib(conn, 100);
+      try {
+        console.log(`[oauth] WL via innertube user=${req.user?.id} count=${items.length}`);
+      } catch {}
       return res.json({
         items, count: items.length, writeGranted, via: 'innertube',
         note: 'Liste lue via InnerTube (l’API YouTube ne l’expose pas pour ce compte).',
@@ -718,11 +721,18 @@ r.get('/oauth/google/yt-history', authMiddlewareCookieAware, oauthLimiter, async
     const conn = await freshOAuthToken(req.user.id, 'google');
     const max = Math.min(500, Math.max(1, Number(req.query.max || 200)));
     const { items, hasMore } = await fetchInnerTubeHistory(conn, max);
+    try {
+      console.log(`[oauth] yt-history user=${req.user?.id} count=${items.length} hasMore=${hasMore}`);
+    } catch {}
     return res.json({ items, count: items.length, hasMore });
   } catch (error) {
     const out = { error: error?.message || 'ythistory_fetch_failed' };
     if (error?.ytReason) out.ytReason = error.ytReason;
+    if (error?.detail) out.detail = error.detail;
     if (error?.hint) out.hint = error.hint;
+    try {
+      console.warn(`[oauth] yt-history échec user=${req.user?.id} code=${out.error} detail=${String(error?.detail || error?.ytReason || '').slice(0, 300)}`);
+    } catch {}
     if (!out.hint && error?.status === 401) {
       out.hint = 'Session Google expirée : déconnectez puis reconnectez Google.';
     } else if (!out.hint && String(error?.ytReason || '').toLowerCase().includes('insufficientpermissions')) {