Refactor Nginx configuration and update project dependencies

- Cleaned up the Nginx configuration for the Coolify deployment, ensuring proper formatting and organization.
- Updated the `pyproject.toml` file to maintain consistent formatting.
- Reformatted the `requirements.txt` file for better readability while keeping the dependencies unchanged.

frontend/app/main.py

@@ -1,7 +1,7 @@
-"""Flask frontend application entry point."""
-from . import create_app
-
-app = create_app()
-
-if __name__ == "__main__":
-    app.run(host="0.0.0.0", port=12016, debug=True)
+"""Flask frontend application entry point."""
+from . import create_app
+
+app = create_app()
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=12016, debug=True)