- Expand all existing games (ColoradoDefense, CodeBugInvaders, DotDude, SmashOut) from 2 levels to 10 levels with progressive difficulty scaling
- Add new game "Vortex" with 10 levels of increasing difficulty
- Update game config to include Vortex in the game pool
- Add Vortex music asset and configuration
- Improve GameManager robustness with duplicate event guards
- Clean up JSON formatting in all game config files
- Remove version query parameters from config loading where appropriate
