Scene Management & Cross-Scene Copy

July brought six releases as the team shipped a steady stream of quality-of-life improvements. The headline feature was copying assets between scenes — you can now copy a selection in one scene and paste it into another open scene tab. The export pipeline was refactored around a typed ExportType interface, making the export menu cleaner and more extensible. A Name Change panel let users rename templates inline. The Top Menu gained an Exit option. Particle folder importing from the file menu was wired up.