Respect deliver_album_cover on player page and scale cover to 160px everywhere

helpers.py

@@ -735,17 +735,29 @@ def format_musicgpt_cost(cost):
     return f"${float(cost):.4f} USD"
 
 
-def download_album_cover(rid, cover_url):
-    """Download a MusicGPT album cover to a temp file and return its path."""
+def download_album_cover(rid, cover_url, max_width=160):
+    """
+    Download a MusicGPT album cover to a temp file, resize it so it is not
+    oversized in emails or pages, and return its path. The default max_width
+    of 160px matches the inline album cover display size on the player/admin pages.
+    """
     if not cover_url:
         return None
     try:
         import tempfile
+        from PIL import Image
         resp = requests.get(cover_url, timeout=30)
         if resp.status_code == 200:
             ext = Path(cover_url).suffix or '.jpg'
             tmp = Path(tempfile.gettempdir()) / f"cover_{rid}{ext}"
             tmp.write_bytes(resp.content)
+            # Resize if the image is wider than max_width to keep email/file size small.
+            with Image.open(tmp) as img:
+                if img.width > max_width:
+                    ratio = max_width / img.width
+                    new_height = int(img.height * ratio)
+                    img = img.resize((max_width, new_height))
+                    img.save(tmp)
             return str(tmp)
     except Exception:
         pass