Create patch.py

patch.py

@@ -0,0 +1,33 @@
+import os
+
+patch = '''
+from fastapi.staticfiles import StaticFiles
+from fastapi.responses import FileResponse
+import os as _os
+
+_static_dir = _os.path.join(_os.path.dirname(__file__), 'static')
+if _os.path.exists(_static_dir):
+    app.mount('/assets', StaticFiles(directory=_os.path.join(_static_dir,'assets')), name='assets')
+
+    @app.get('/{full_path:path}')
+    async def serve_spa(full_path: str):
+        index = _os.path.join(_static_dir, 'index.html')
+        return FileResponse(index)
+'''
+
+content = open('backend/main.py').read()
+insert_after = 'allow_headers=["*"],\n)'
+content = content.replace(insert_after, insert_after + '\n' + patch)
+open('backend/main.py', 'w').write(content)
+print("patch.py applied successfully")
+```
+
+---
+
+So your root files should now look like:
+```
+Dockerfile       ← replaced
+patch.py         ← new file
+backend/
+frontend/
+README.md