Fix: simplify launch for HF Spaces compatibility

app.py

@@ -194,9 +194,4 @@ custom_css = (
 )
 
 if __name__ == "__main__":
-    launch_kwargs = {
-        "css": custom_css,
-    }
-    if _favicon_path.exists():
-        launch_kwargs["favicon_path"] = str(_favicon_path)
-    demo.launch(**launch_kwargs)
+    demo.launch()