Update app.py

app.py

@@ -2320,12 +2320,17 @@ def similarity_matching(sprites_data: str, project_folder: str) -> str:
         final_project["targets"].insert(0, stage_obj)
     else:
         logger.warning("⚠️ No backdrop matched. Using default static backdrop.")
-        default_backdrop_path = BACKDROP_DIR / "plain_white.svg"
-        default_backdrop_name = "plain_white.svg"
-        
+        default_backdrop_path = BACKDROP_DIR / "cd21514d0531fdffb22204e0ec5ed84a.svg"
+        default_backdrop_name = "cd21514d0531fdffb22204e0ec5ed84a.svg"
+
+        default_backdrop_sound = BACKDROP_DIR / "83a9787d4cb6f3b7632b4ddfebf74367.wav")
+        default_backdrop_sound_name = "cd21514d0531fdffb22204e0ec5ed84a.svg"
         try:
             shutil.copy2(default_backdrop_path, os.path.join(project_folder, default_backdrop_name))
             logger.info(f"✅ Default backdrop copied to project: {default_backdrop_name}")
+
+            shutil.copy2(default_backdrop_sound, os.path.join(project_folder, default_backdrop_sound_name))
+            logger.info(f"✅ Default backdrop sound copied to project: {default_backdrop_sound_name}")
         except Exception as e:
             logger.error(f"❌ Failed to copy default backdrop: {e}")