Major refactoring of the UI layer to use Svelte components:
- Replace inline HTML with modular Svelte components
- Add authentication system with UserProfile component
- Implement navigation store for view management
- Create comprehensive settings and controls screens
- Add level editor with JSON validation
- Implement progression tracking system
- Update level configurations and base station model
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
