Add dedicated SheetSage2 ZeroGPU engine and Score Studio OAuth metadata

app.py

@@ -30,7 +30,7 @@ MODEL = AutoModel.from_pretrained(
 subprocess.run([sys.executable, "-m", "playwright", "install", "--only-shell", "chromium"], check=True)
 
 
-def gpu_seconds(audio, start, duration, melody_only, piano, **kwargs):
+def gpu_seconds(audio, start, duration, melody_only, piano, progress=None, **kwargs):
     # Short excerpts should fit visitor quotas instead of reserving five minutes.
     return max(45, min(300, int(float(duration) * 0.4) + 30))