Renamed 'Excalidraw Complete' to 'Excalidraw Full' in both English and Chinese README files. Added new sections highlighting core differences from the official Excalidraw, and included four illustrative screenshots to showcase multi-canvas management, storage options, OAuth2 login, and AI features.
Expanded and clarified the main README with new features, configuration, and deployment instructions. Added a Chinese translation (README_zh.md). Updated docker-compose.yml to improve volume and env file mounting.