Update environment variables, Docker configuration, and dependencies; refactor token management and chat agent logic. Added FastAPI server setup and improved message handling in GigaChat client.

.dockerignore

@@ -0,0 +1,47 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+env/
+venv/
+ENV/
+.venv
+
+# Testing
+.pytest_cache/
+.coverage
+htmlcov/
+*.cover
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Project specific
+.env
+*.log
+*.db
+*.sqlite
+
+# Git
+.git/
+.gitignore
+
+# Docker
+docker-compose.yml
+Dockerfile
+.dockerignore
+
+# Documentation
+*.md
+!README.md
+