feat: add Docker support with Dockerfile and docker-compose configuration

Refactor main.py and ai_service.py for improved logging and error handling; enhance user_service.py for better user data synchronization

test

feat: add AI chat functionality with GROQ integration

docs: update env example and readme

docs: update README with detailed setup instructions

fix: close bot session properly on shutdown

Pin aiosqlite 0.19.0 for Tortoise compatibility

Pin aiosqlite version and clarify setup

change