fix: playlist field: tracks -> items

api.py

@@ -680,22 +680,25 @@ def playlist(playlist_id):
         access_token,
     )
 
-    # The playlist response embeds a `tracks` paging object whose first page
-    # contains up to 100 items. For playlists larger than that, follow the
-    # dedicated tracks endpoint until exhausted and splice the full list back
-    # into the response.
-    tracks_obj = playlist_data.get("tracks") or {}
-    if tracks_obj.get("next"):
-        all_tracks = spotify_get_paginated(
+    # Full playlist objects use a paging object at `items` (current Spotify shape)
+    # or legacy `tracks`. Follow `next` on whichever is present.
+    paging_key = (
+        "items"
+        if isinstance(playlist_data.get("items"), dict)
+        else "tracks"
+    )
+    paging = playlist_data.get(paging_key) or {}
+    if paging.get("next"):
+        all_items = spotify_get_paginated(
             f"https://api.spotify.com/v1/playlists/{playlist_id}/tracks",
             access_token,
             limit=100,
         )
-        playlist_data["tracks"] = {
-            **tracks_obj,
-            "items": all_tracks,
+        playlist_data[paging_key] = {
+            **paging,
+            "items": all_items,
             "offset": 0,
-            "limit": len(all_tracks),
+            "limit": len(all_items),
             "next": None,
             "previous": None,
         }