- Add battle module with sessions, maps, tokens, and combatants
- Implement WebSocket gateway for real-time battle updates
- Add map upload with configurable grid system
- Create battle canvas with token rendering and drag support
- Support PC tokens from characters and NPC tokens from templates
- Add initiative tracking and round management
- GM-only controls for token manipulation
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
